Zilong's Google Scholar

Declaration: Personal use of these published papers below is permitted. However, permission to use them for any other purposes must be obtained from their individual publishers. 

Zilong's Journals

1. D. Zhang, Y. Yang, Z. Liu, S. Jia. K. Lee, and Z. Zhang, "Low Complexity Weight Flexible Decoding Schemes of Linear Block Code for 6G xURLLC," IEEE Transactions on Vehicular Technology, October 2025, Accepted for publication. 

2. Z. Sui, Z. Liu, L. Musavian, L.-L. Yang, and L. Hanzo, "Generalized Spatial Modualtion Aided Affine Frequency Division Multiplexing," IEEE Transactions on Wireless Communications, September 2025, Accepted for publication. [PDF]

3. B. Zhou, Z. Zhou, Y. Yang, and Z. Liu, "New Construction of Complete Complementary Codes with Low PAPR for Column Sequences," Cryptography and Communications, October 2025, [PDF]. 

4. Y. Huang, P. Yang, Z. Liu, Y. Xiao, and T. Quek, "An Adaptive MDS-Coded OFDM Waveform for Low-Altitude ISAC: Design and Optimization," IEEE Journal on Selected Areas in Communications, September 2025, Accepted for publication. 

5. Q. Luo, J. Zhu, Z. Liu, Y. Tang, P. Xiao, G. Chen, and J. Shi, "Joint Sparse Graph for Enhanced MIMO-AFDM Receiver Design," IEEE Transactions on Wireless Communications, Accepted for Publication. [PDF]

6. S. Chaturvedi, Z. Liu, V. A. Bohara, A. Srivastava, and P. Xiao, "Resource Allocation for SCMA-Empowered Multi-UAV Transmission System," IEEE Transactions on Network Science and Engineering, Accepted for publication. 

7. B. Sheng, Y. Yang, Z. Zhou, Z. Liu, and P. Fan, "Doppler Resilient Complementary Sequences: Theoretical Bounds and Optimal Constructions," IEEE Transactions on Information Theory, vol. 71, no. 7, pp. 5166-5177, Jul. 2025. 

8. L. Meng, Y. L. Guan, Y. Ge, Z. Liu, and P. Fan, "Generalized Arlery-Tan-Rabaste-Levenshtein Lower Bounds on Ambiguity Function and Their Asymptotic Achievability,"  IEEE Transactions on Information Theory, vol. 71, no. 7, pp. 5744-5754, Jul. 2025. [PDF] 

9. C.-Y. Pai, Z. Liu, C.-Y. Chen, "Spase Zero Correlation Zone Arrays for Training Design in Spatial Modulation Systems," IEEE Transactions on Communications, Accepted for publication. 

10. A. Huo, G. Li, L. Yang, Z. Liu, and A. Hu, "Enhancing Wireless Communication Security with Variable Bloom Filter-Based Physical Layer Secure Transmission," IEEE Internet of Things Journal, vol. 12, no. 15, pp. 28835-28849, Jul. 2025.

11. Q. Xiao, G. Li, Z. Liu, and A. Hu, ``Optimal Subcarrier Allocation Scheme for Physical-Layer Key Generation in an OFDMA Network," IEEE Transactions on Information Forensics & Security, vol. 20, pp. 4929-4942, May 2025. 

12. Y. Zhou, Q. Shi, Z. Zhou, Z. Liu, and P. Fan, ``Waveform and Filter Design for Integrated Sensing and Communication Against Signal-Dependent Modulated Jamming," IEEE Transactions on Vehicular Technology, Accepted for publication. 

13. L. Tian, X. Song, Z. Liu, and Y. Li, ``Asymptotically Optimal Sequence Sets with Low/Zero Ambiguity Zone Properties," IEEE Transactions on Information Theory, vol. 71, no. 6, pp. 4785-4796, Jun. 2025. [PDF]. 

14. L. Meng, Y. L. Guan, Y. Ge, and Z. Liu, ``Flag Sequence Set Design for Low-Complexity Delay-Doppler Estimation," IEEE Transactions on Vehicular Technology, vol. 74, no. 8, pp. 12131-12147, Aug. 2025. [PDF]

15. M. Liu, Z. Zhou, Q. Shi, G. Li, Z. Liu, and P. Fan, ``Joint Beamforming Design for Integrated Sensing and Communication Systems with Hybrid-Colluding Eavesdroppers," IEEE Transactions on Communications, Accepted for publication. [PDF]

16. H. Liu, Q. Luo, Z. Liu, S. Luo, P. Xiao, and X. Yuan, ``Phase Noise Resilient Codebook Design for Sparse Code Multiple Access, " IEEE Wireless Communications Letters, vol. 14, no. 6, pp. 1603-1607, Jun. 2025. [PDF]

17. X. Peng, Y. Wang, and Z. Liu, ``New Constructions of 2-D Golay Complementary Array Sets with Highly Flexible Array Sizes for Massive MIMO Omni-Directional Transmission," IEEE Signal Processing Letters, vol. 31, pp. 3129-3133, Oct. 2024. 

18. P. Kazakov and Z. Liu, ``A Computer Search of New OBZCPs of Lengths up to 49," IEEE Transactions on Aerospace and Electronic Systems, Accepted for publication. [PDF]

19. X. Li, P. Fan, Q. Wang, and Z. Liu, "Grid Evolution for Doubly Fractional Channel Estimation in OTFS Systems," IEEE Transactions on Vehicular Technology, vol. 74, no. 2, pp. 3486-3490, Feb. 2025. [PDF]

20. Z. Gu, Z. Zhou, P. Fan, A. Adhikary, and Z. Liu, "Oversampled Low Ambiguity Zone Sequences for Channel Estimation Over Doubly Selective Channels," IEEE Transactions on Communications, vol. 73, no. 4, pp. 2616-2630, Apr. 2025. [PDF]

21. G. Singh, A. Srivastava, V. Bohara, Md Noor-A-Rahim, Z. Liu, and D. Pesch, "Towards 6G-V2X: Aggregated RF-VLC for ultra-reliable and low-latency autonomous driving," IEEE Communications Standards Magazine, vol. 8, no. 4, pp. 80-87, Dec. 2024. [PDF]

22. Y. Gui, Z. Liu, Q. Luo, L. Yu, Z. He, and P. Xiao, ``Codebook Design for SCMA-Assisted Visible Light Communication with Shot Noise," IEEE Transactions on Vehicular Communications, vol. 74, no. 1, pp. 1753-1758, Jan. 2025. 

23. Q. Luo, P. Xiao, Z. Liu, Z. Wan, N. Thomos, Z. Gao, and Z. He, ``AFDM-SCMA: A promising waveform for massive connectivity over high mobility channels," IEEE Transactions on Wireless Communications, vol. 23, no. 10, pp. 14421-14436, Oct. 2024. [PDF]

24. J. Tang, F. Chen, J. Li, and Z. Liu, ``Learn to Schedule: Data Freshness-oriented Intelligent Scheduling in Industrial IoT," IEEE Transactions on Cognitive Communications and Networking, vol. 11, no. 11, pp. 505-518, Feb. 2025. 

25. Z.-M. Huang, C. Hu, Z. Liu, and C.-Y. Chen, ``Cross Z-Complementary Sets with Flexible Lengths for Optimal Training Design in Spatial Modulation," IEEE Transactions on Communications, vol. 73, no. 1, pp. 132-144, Jan. 2025. 

26. Z.-M. Huang, C.-Y. Pai, Z. Liu, and C.-Y. Chen, ``Enhanced Cross Z-Complementary Set and Its Application in Generalized Spatial Modulation," IEEE Open Journal of the Communications Society, vol. 5, pp. 4674-490, Jun. 2024. 

27. H. Chen, H. Wang, Z. Liu, D. Gu, and W. Ye, "HP3D-V2V: High-Precision 3D Object Detection V2V Cooperative Perception Algorithm," Sensors, 24(7), 2170, Mar. 2024. [PDF] 

28. P. Sarkar, C. Li, S. Majhi, and Z. Liu, "New Correlation Bound and Construction of Quasi-Complementary Sequence Sets," IEEE Transactions on Information Theory, vol. 70, no. 3, pp. 2201-2223, Mar. 2024. [PDF]

29. Z.-M. Huang, C. Hu, Z. Liu, C.-Y. Chen, "On the Mates of Cross Z-Complementary Pairs for Training Sequence Design in Generalized Spatial Modulation," IEEE Access, vol. 11, pp. 145231-145237, Dec. 2023. 

30. S. Chaturvedi, V. Bohara, Z. Liu, A. Srivastava, and P. Xiao, "Resource Management for Sum-rate Maximization in SCMA-Assisted UAV System," Vehicular Communications, vol. 45, pp. 1-12, Feb. 2024.

31. E. Yu, J. Zhu, Q. Li, Z. Liu, H. Chen, S. Shamai, and H. V. Poor, "Deep Learning Assisted Multiuser MIMO Load Modulated Systems for Enhanced Downlink mmWave Communications," IEEE Transactions on Wireless Communications, vol. 23, pp. 7, pp. 6750-6764, Jul. 2024. [PDF]

32. Y.-Q. Zhao, C.-Y. Pai, Z.-M. Huang, Z. Liu, and C.-Y. Chen, "Two-Dimensional Golay Complementary Array Sets With Arbitrary Lengths for Omnidirectional MIMO Transmission," IEEE Transactions on Communications, vol. 72, no. 2, pp. 1135-1145, Feb. 2024. 

33. K. Lai, Z. Liu, J. Lei, G. Chen, and P. Xiao, "Sparse Code Multiple Access with Enhanced K-Repeition Scheme: Analysis and Design, " IEEE Transactions on Wireless Communications, vol 23, no. 6, pp. 5301-5315, Jun. 2024. 

34. Y. Gui, Z. Liu, L. Yu, C. Li, and P. Fan, "Novel Power-Imblanced Dense Codebooks for Reliable Multiplexing in Nakagami Channels," IEEE Wireless Communications Letters, vol. 13, no. 1, pp. 19-23, Jan. 2024. [PDF]

35. L. Yu, J. Qian, Y. Gui, Z. Liu, P. Xiao, Z. Wang, and Y. Wang, "Uniform-Distributed Constellation Codebook Design for High-Capacity Visible Light Communications," IEEE Communications Letters, vol. 27, no. 11, pp. 2993-2997, Nov. 2023.

36. Q. Luo, Z. Liu, G. Chen, and P. Xiao, "Enhancing Signal Space Diversity for SCMA over Rayleigh Fading Channels," IEEE Transactions on Wireless Communications, vol. 23, no. 4, pp. 3676-3690, Apr. 2024. [PDF]

37. S. Chaturvedi, V. Bohara, Z. Liu, and A. Srivastava, "Sum-rate Maximization of IRS-aided SCMA System," IEEE Transactions on Vehicular Technology, vol. 72, no. 8, pp. 10462-10472, Aug. 2023. 

38. Y. Zhou, Z. Zhou, Z. Liu, Y. Yang, P. Yang, P. Fan, "Symmetrical Z-Complementary Code Sets for Optimal Traning in Generalized Spatial Modualtion," Signal Processing, vol. 208, pp. 1-12, July 2023. 

39. Y. Huang, P. Yang, B. Zhang, Z. Liu, and M. Xiao, "A Novel Maximum Distance Separable Coded OFDM-RIS for 6G Wireless Communications," IEEE Wireless Communications Letters, vol. 12, no. 5, pp. 927-931, May 2023. 

40. Q. Luo, Z. Liu, G. Chen, P. Xiao, Y. Ma, and A. Maaref, "A Design of Low-Projection SCMA Codebooks for Ultra-Low Decoding Complexity in Downlink IoT Networks," IEEE Transactions on Wireless Communications, vol. 22, no. 10, pp. 6608-6623, Oct. 2023. [PDF]

41. H. Wen, W. Yuan, Z. Liu, and S. Li, ``OTFS-SCMA: A Downlink NOMA Scheme for Massive Connectivity in High Mobility Channels," IEEE Transactions on Wireless Communications, vol. 22, no 9, pp. 5770-5784, Sep. 2023. [PDF]

42. J. Ma, Q. Li, Z. Liu, L. Du, H. Chen, and N. Ansari, ``Jamming Modulation: An Active Anti-Jamming Scheme," IEEE Transactions on Wireless Communications, vol. 22, no. 4, pp. 2730-2743, Apr. 2023. [PDF]

43. G. Singh, D. Gupta, V. Bohara, A. Srivastava, and Z. Liu, ``Exploring Cooperative NOMA Assisted Hybrid Visible Light and Radio Frequency for Enhanced Vehicular Message Dissemination at Road Intersections," Physical Communication, vol. 55, December 2022. [PDF]

44. Z. Ye, Z. Zhou, Z. Liu, X. Tang, and P. Fan, ``New Spectrally Constrained Sequence Sets with Optimal Periodic Cross-Correlation," IEEE Transactions on Information Theory, vol. 69, no. 1, pp. 610-625, January 2023. [PDF]

45. Q. Luo, H. Wen, G. Chen, Z. Liu, P. Xiao, Y. Ma, and A. Maaref, ``A Novel Non-Coherent SCMA With Massive MIMO," IEEE Wireless Communications Letters, vol. 11, no. 11, pp. 2250-2254, Nov. 2022. 

46. K. Jiang, P. Yang, B. Zhang, Z. Liu, J. Fu, and S. Li, ``A Novel Extreme-Learning-Machine Aided Receiver Design for THz-SM with Hardware Imperfections," IEEE Communications Letters, vol. 26, no. 11, pp. 2606-2610, Nov. 2022. 

47. H. Wen, Z. Liu, Q. Luo, C. Shi, and P. Xiao, ``Designing Enhanced Multi-Dimensional Constellations for Code-Domain NOMA," IEEE Wireless Communications Letters, vol. 11, no. 10, pp. 2130-2134, Oct. 2022. [PDF]

48. M. Liu, H. Zhang, Z. Liu, and N. Zhao, ``Attacking Spectrum Sensing with Adversarial Deep Learning in Cognitive Radio-Enabled Internet of Things," IEEE Transactions on Reliability, vol. 72, no. 2, pp. 431-444, Jun. 2023. 

49. P. Gao, Z. Liu, P. Xiao, C. H. Poh, and J. Zhang, ``Low-Complexity Block Coordinate Descend Based Multiuser Detection for Uplink Grant-Free NOMA," IEEE Transactions on Vehicular Technology, vol. 71, no. 9, pp. 9532-9543, Sept. 2022. [PDF]

50. S. Chaturvedi, Z. Liu, V. Bohara, A. Srivastawa, and P. Xiao, ``A Tutorial on Decoding Techniques of Sparse Code Multiple Access," IEEE Access, vol. 10, May 2022. [PDF] 

51. Md. Noor-A-Rahim, Z. Liu, H. Lee, M. Omar Khyam, J. He, D. Pesch, K. Moessner, W. Saad, and H. V. Poor,``6G for Vehicle-to-Everything (V2X) Communications: Enabling Technologies, Challenges, and Opportunities," Proceedings of the IEEE, vol. 110, no. 6, pp. 712-734, June 2022. [PDF]

52. Q. Luo, Z. Liu, G. Chen, Y. Ma, and P. Xiao, ``A Novel Multi-Task Learning Empowered Codebook Design for Downlink SCMA Networks," IEEE Wireless Communications Letters, vol. 11, no. 6, pp. 1268-1272, June 2022. [PDF]

53. Y. Huang, S. Hu, S. Ma, Z. Liu, and M. Xiao, ``Designing Low-PAPR Waveform for OFDM-based RadCom Systems," IEEE Transactions on Wireless Communiations, vol. 21, no. 9, pp. 6979-6993, Sep. 2022. [PDF]

54. G. Singh, A. Srivastava, V. Bohara, Z. Liu, Md. Noor-A-Rahim, and G. Ghatak, ``Heteogeneous Visible Light and Radio Communication for Improving Safety Message Dissemination at Road Intersection, " IEEE Transactions on Intelligent Transportation Systems, vol. 23, no. 10, pp. 17607-17619, Oct. 2022. [PDF]

55. L. Chai, Z. Liu, P. Xiao, A. Maaref, and L. Bai, ``An Improved EPA based Receiver Design for Uplink LDPC Coded SCMA System," IEEE Wireless Communications Letters, vol. 11, no. 5, pp. 947-951, May 2022. [PDF]

56. Z. Ye, Z. Zhou, P. Fan, Z. Liu, X. Lei, and X. Tang, ``Low Ambiguity Zone: Theoretical Bounds and Doppler-Resilient Sequence Design in Integrated Sensing and Communication Systems," IEEE Journal on Selected Areas in Communications Special Issue on Integrated Sensing and Communications, vol. 40, no. 6, pp. 1809-1822, June 2022. [PDF]

57. Q. Zeng, Z. Liu, and G. Gradoni, ``Optimal Quasi-Orthogonal FH Sequences with Adaptive Array Receiver for Massive Connectivity in Asynchronous Multi-Cluster Networks," IEEE Transactions on Wireless Communications, vol. 21, no. 8, pp. 5730-5743, Aug. 2022. [PDF]

58. J. Li, J. Tang, and Z. Liu, ``On the Data Freshness for Industrial Internet of Things with Mobile Edge Computing," IEEE Internet of Things Journal, vol. 9, no. 15, pp. 13452-13554, Aug. 2022. [PDF]

59. S. Chaturvedi, D. Anwar, V. Bohara, A. Srivastava, and Z. Liu, ``Low-Complexity Codebook Design for SCMA based Visible Light Communication," IEEE Open Journal of the Communication Society,vol. 3, pp. 106-118, 2022. [PDF]

60. M. Liu, Z. Liu, W. Lu, Y. Chen, X. Gao, and N. Zhao, "Distributed few-shot learning for intelligent recognition of communication jamming," IEEE Journal of Selected Topics in Signal Processing, vol. 16, no. 3, pp. 395-405, Apr. 2022. [PDF] 

61. M. Zhang, Z. Zhou, L. Li, Z. Liu, M. Yang, Y. Feng, "HpGAN: Sequence Search with Generative Adversarial Networks," IEEE Transactions on Neural Networks and Learning Systems, Accepted for Publication. [PDF]

62. P. Gao, Z. Liu, P. Xiao, C. Foh, and J. Zhang, "Low-Complexity Channel Estimation and Multi-User Detection for Uplink Grant-Free NOMA Systems," IEEE Wireless Communications Letters, vol. 11, no. 2, pp. 263-267, Feb. 2022. [PDF]

63. X. Yao, J. Fu, P. Yang, Z. Liu, Y. Xiao, and S. Li, "A Hybrid Multi-Domain Index Modulation for Covert Communication," IEEE Wireless Communications Letters, vol. 11, no. 1, pp. 8-12, Jan. 2022. 

64. X. Li, Z. Gao, Y. Gui, Z. Liu, P. Xiao, and L. Yu, "Design of Power-Imbalanced SCMA Codebook," IEEE Transactions on Vehicular Technology, vol. 71, no. 2, pp. 2140-2145, Feb. 2022.  [PDF]

65. J. Zhu, Q. Li, Z. Liu, H. Chen, and H. Vincent Poor, "Enhanced User Grouping and Power Allocation for Hybrid mmWave MIMO-NOMA Systems," IEEE Transactions on Wireless Communications, vol. 21, no. 3, pp. 2034-2050, Mar. 2022. [PDF]

66. M. Zhang, Z. Zhou, M. Yang, Z. Liu, and Y. Yang, "A Hybrid Algorithm for the Search of Long Binary Sequences with Low Aperiodic Autocorrelations," Soft Computing, vol. 25, pp. 12725-12744, Aug. 2021. 

67. W. Wu, S. Hu, D. Lin, and Z. Liu, "DSLN: Securing Internet of Things Through RF Fingerprint Recognition in Low-SNR Settings," IEEE Internet of Things Journal, vol. 9, no. 5, pp. 3838-3849, Mar. 2022. 

68. X. Yao, P. Yang, Z. Liu, M. Xiao, S. Li, and W. Xiang, "A Novel Hybrid Code-Domain Index Modulation," IEEE Communications Letters, vol. 25, no. 10, pp. 3403-3407, Oct. 2021. 

69. K. Jiang, P. Yang, Z. Liu, Y. L. Guan, and M. D. Renzo, "Power Allocation-Aided Enhanced SM-OFDM: Closed-form Solutions and Experimental Results," IEEE Transactions on Vehicular Technology, vol. 71, no. 2, pp. 2146-2151, Feb. 2022. 

70. P. Si, W. Lu, H. Han, Z. Liu, Y. Gao, Y. Wu, and Y. Gong, "Trajectory and Resource Optimization in OFDM based UAV-Powered IoT Network," IEEE Transactions on Green Communications and Networking, vol. 5, no. 3, pp. 1259-1270, Sept. 2021. 

71. G. Singh, A. Srivastava, V. Bohara, and Z. Liu, "Downlink Performance of Optical Power Domain NOMA for Beyond 5G Enabled V2X Networks," IEEE Open Journal of Vehicular Technology, vol. 2, pp. 235-248, May 2021. 

72. P. Sarkar, S. Majhi, and Z. Liu, "Pseudo-Boolean Functions for Optimal Z-Complementary Code Sets with Flexible Lengths," IEEE Signal Processing Letters, vol. 28, pp. 1350-1354, June 2021. 

73. L. Qian, P. Yang, Y. L. Guan, Z. Liu, Y. Xiao, and M. Xiao, "Multi-Dimensional Polarized Modulation for Land Mobile Satellite Communications," IEEE Transactions on Cognitive Communications and Networking, vol. 7, no. 2, pp. 383-397, June 2021. 

74. L. Yu, Z. Liu, M. Wen, D. Cai, S. Dang, Y. Wang, P. Xiao, "Sparse Code Multiple Access for 6G Wireless Communication Networks: Recent Advances and Future Directions," IEEE Communications Standards Magazine, vol. 5, no. 2, pp. 92-99, June 2021. [PDF]

75. H. Bagheri, Md Noor-A-Rahim, Z. Liu, H. Lee, D. Pesch, K. Moessner, and P. Xiao, "5G NR-V2X: Towards Connected and Cooperative Autonomous Driving Vehicular Networking," IEEE Communications Standards Magazine, vol. 5, no. 1, pp. 48-54, Mar. 2021. [PDF]. 

76. Z. Liu and L.-L. Yang, "Sparse or Dense: A Comparative Study of Code-Domain NOMA Systems," IEEE Transactions on Wireless Communications, vol. 20, no. 8, pp. 4768-4780, Aug. 2021. [PDF]

77. Q. Luo, P. Gao. Z. Liu, L. Xia, Z. Mheich, P. Xiao, and A. Maaref, "An Error Rate Comparison of Power Domain Non-Orthogonal Multiple Access and Sparse Code Multiple Access," IEEE Open Journal of the Communications Society, vol. 2, pp. 500-511, March 2021. 

78. L. Deng, Z. Liu, Y. L. Guan, X. Liu, C. A. Aslam, X. Yu, and Z. Shi, "Perturbed Adaptive Belief Propagation Decoding for High-Density Parity-Check Codes," IEEE Transactions on Communications, vol. 69, no. 4, pp. 2065-2079, April 2021, [PDF]

79. W. Lu, P. Si, F. Lu, B. Li, Z. Liu, S. Hu, and Y. Gong, "Resource and Trajectory Optimization in UAV-powered Wireless Communication System," SCIENCE CHINA, 64:140304, 2021. 

80. W. Lu, P. Si, X. Liu, B. Li, Z. Liu, N. Zhao, and Y. Wu, "OFDM Based Bidirectional Multi-Relay SWIPT Strategy for 6G IoT Networks," China Communication, vol. 17, no. 2, pp. 80-91, Dec. 2020. 

81. Z. Chu, W. Hao, P. Xiao, D. Mi, Z. Liu, M. Khalily, J. Kelly, and A. Feresidis, "Secrecy Rate Optimization for Intelligent Reflecting Surface Assisted MIMO System,"IEEE Transactions on Information Forensics & Security, vol. 16, pp. 1655-1669, Nov. 2020. 

82. S. Das, U. Parampalli, S. Majhi, Z. Liu, S. Budishin, "New Optimal Z-Complementary Code Sets Based on Generalized Paraunitary Matrices," IEEE Transactions on Signal Processing, vol. 68, pp. 5546-5558, Sep. 2020. 

83. Md. Noor-A-Rahim, Z. Liu, H. Lee, G. G. Md. Nawaz Ali, Dirk Pesch, Pei Xiao, "A Survey on Resource Allocation in Vehicular Networks," IEEE Transactions on Intelligent Transportation Systems, vol. 23, no. 2, pp. 701-721, Feb. 2022. [PDF] 

84. Md. Noor-A-Rahim, Z. Liu, Y. L. Guan, and L. Hanzo, "Finite-Length Performance Analysis of LDPC Coded Continuous Phase Modulation," IEEE Transactions on Vehicular Technology, vol. 69, no. 10, pp. 12277-12280, Oct. 2020. [PDF]

85. P. Sarkar, S. Majhi, and Z. Liu, "A Direct and Generalized Construction of Polyphase Complementary Sets with Low PMEPR and High Code-Rate for OFDM System," IEEE Transactions on Communications, vol. 68, no. 10, pp. 6245-6262, July 2020. [PDF] 

86. Z. Mheich, Z. Liu, P.  Xiao, and A. Maaref, "Delayed Bit Interleaved Coded Sparse Code Multiple Access," IEEE Transactions on Vehicular Technology, vol. 69, no. 7, pp. 8018-8022, May 2020. [PDF]

87. S.-W. Wu, C.-Y. Chen, and Z. Liu, "How to Construct Mutually Orthogonal Complementary Sets with Non-Power-of-Two Lengths?" IEEE Transactions on Information Theory, vol. 67, no. 6, pp. 3464-3472, June 2021. [PDF]

88. Y. Zhou, Z. Zhou, Z. Liu, P. Fan, and Y. L. Guan, "Low-PMEPR Preamble Sequence Design for Dynamic Spectrum Allocation in OFDMA Systems," IEEE Transactions on Communications, vol. 68, no. 5, pp. 2922-2933, May 2020. [PDF]

89. Z. Liu, P. Yang, Y. L. Guan, and P. Xiao, "Cross Z-Complementary Pairs (CZCPs) for Optimal Training in Spatial Modulation Over Frequency Selective Channels," IEEE Transactions on Signal Processing, vol. 68, pp. 1529-1543, Feb. 2020. PDF [Matlab Code for Fig. 6].

90. L. Xiao, P. Xiao, Z. Liu, W. Yu, H. Haas, and L. Hanzo, "A Compressive Sensing Assisted Massive SM-VBLAST System: Error Probability and Capacity Analysis," IEEE Transactions on Wireless Communications, vol. 19, no. 3, pp. 1990-2005, Mar. 2020. [PDF]

91. K. Jiang, Z. Liu, P. Yang, Y. Xiao, and S. Li, "An Experimental Investigation of Enhanced SM-OFDM Over Indoor Rician Multipath Channels," IEEE Transactions on Vehicular Technology, vol. 69, no. 2, pp. 2291-2295, Feb. 2020. 

92. A. Adhikary, S. Majhi, Z. Liu, and Y. L. Guan, "New Sets of Optimal Odd-length Binary Z-Complementary Pairs," IEEE Transactions on Information Theory, vol. 66, no. 1, pp. 669-678, Jan. 2020. PDF

93. S. Han, X. Xu, Z. Liu, P. Xiao, K. Moessner, X. Tao, P. Zhang, "Energy-Efficient Short Packet Communications For Uplink NOMA-based Massive MTC Networks," IEEE Transactions on Vehicular Technology, vol. 68, no. 12, pp. 12066-12078, Dec. 2019.

94. K. Anand, Y. L. Guan, X. Liu, Z. Liu, Y. Yang, Z. Zhou, P. Fan, and E. Gunawan, "Pilot Design for Enhanced Channel Estimation in Doubly Selective Channel," IEEE Transactions on Vehicular Technology, no. 69, no. 2, pp. 1679-1694, Feb. 2020.

95. Z. Liu, P. Xiao, and S. Hu, "Low-PAPR Preamble Design for FBMC Systems," IEEE Transactions on Vehicular Technology, vol. 68, no. 8, pp. 7869-7876, Aug. 2019. PDF

96. J. Zhang, S. Hu, Z. Liu, P. Wang, P. Xiao, and Y. Gao, "Real-Valued Orthogonal Sequences for Iterative Channel Estimation in MIMO-FBMC Systems," IEEE Access, vol. 7, pp. 68742-68751, May 2019. 

97. Q. Zeng, Z. Zhou, X. Liu, and Z. Liu, "Strong No-Hit-Zone Sequences for Improved Quasi-Orthogonal FHMA Systems: Sequence Design and Performance Analysis," IEEE Transactions on Communications, vol. 67, no. 8, pp. 5336-5345, Aug. 2019. 

98. S. Das, S. Majhi, S. Budishin, Z. Liu, "A New Construction Framework for Polyphase Complete Complementary Codes with Various Lengths," IEEE Transactions on Signal Processing, vol. 67, no. 10, pp. 2639-2648, May 2019. 

99. Md. Noor-A-Rahim, M. O. Khyam, G. G. Nawaz Ali, Z. Liu, D. Pesch, and P. H. Chong, "Reliable State Estimation of an Unmanned Aerial Vehicle over a Distributed Wireless IoT Network," IEEE Transactions on Reliability, vol. 68, no. 3, pp. 1061-1069, Sept. 2019. 

100. P. Sarkar, S. Majhi, and Z. Liu, "Optimal Z-Complementary Code Set From Generalized Reed-Muller Codes," IEEE Transactions on Communications, vol. 67, no. 3, pp. 1783-1796, Mar 2019. PDF

101. B. Gong, L. Gui, S. Luo, Y. L. Guan, Z. Liu, and P. Fan, "Block Pilot Based Channel Estimation and High Accuracy Signal Detection for GSM-OFDM Systems on High Speed Railways," IEEE Transactions on Vehicular Technology, vol. 67, no. 12, pp. 11525-11536, Dec. 2018. 

102. P. Yang, J. Zhu, Z. Liu, Y. Xiao, S. Li, and W. Xiang, "Unified Power Allocation for Receive Spatial Modulation based on Approximate Optimization," IEEE Access, vol. 6, pp. 49450-49459, Sep. 2018. 

103. Z. Liu, Y. L. Guan, and C.-C. Chui, "CPM Training Waveforms With Autocorrelation Sidelobes Close To Zero," IEEE Transactions on Vehicular Technology, vol. 67, no. 11, pp. 11269-11273, Nov. 2018. PDF 

104. H. Nguyen, M. Noor-A-Rahim, Z. Liu, D. Jamaludin, and Y. L. Guan, "A Semi-Empirical Performance Study of Two-Hop DSRC Message Relaying at Road Intersection," MDPI, pp. 1-15, Information 2018, 9, 147.  

105. S. Das, S. Majhi ,and Z. Liu, "A Novel Class of Complete Complementary Codes and Their Applications for APU Matrices," IEEE Signal Processing Letters, vol. 25, no. 9, pp. 1300-1303, Sept. 2018. 

106. A. Adhikary, S. Majhi, Z. Liu, and Y. L. Guan, "New Sets of Even-Length Binary Z-Complementary Pairs with Asymptotic ZCZ ratio of 3/4," IEEE Signal Processing Letters, vol. 25, no. 7, pp. 970-973, July 2018. 

107. S. Hu, F. Li, H. G, P. Wang, G. Bi, Y. Gao, Z. Liu, and B. Yu, "TDCS-IDMA System for Cognitive Radio Networks With Cloud," IEEE Access, vol. 6, pp. 20520-20530, April 2018. 

108. Z. Liu, Y. L. Guan, U. Parampalli, and S. Hu, “Spectrally-Constrained Sequences: Bounds and Constructions,” IEEE Transactions on Information Theory, vol. 64, no. 4, pp. 2571-2582, April 2018. [pdf]

109. S. Hu, Q. Luo, F. Li, Z. Liu, Y. Gao, and J. Wu, “Practical Implementation of Multi-user Transform Domain Communication System on Control Channels in Cloud-based Cognitive Radio Networks,” IEEE Access, vol. 6, pp. 17010-17021, January 2018. [pdf]

110. X.-B. Liu, Y. L. Guan, S. N. Koh, Z. Liu, and P. Wang, “Low Complexity Single-Channel Blind Separation of Co-Frequency Coded Signals,” IEEE Communications Letters, vol. 22, no. 5, pp. 990-993, May 2018.

111. J. Wen, Z. Zhou, Z. Liu, M.-J. Lai, and X. Tang, “Sharp Sufficient Conditions for Stable Recovery of Block Sparse Signals by Block Orthogonal Matching Pursuit,” Applied and Computational Harmonic Analysis, pp. 1-27, Feb. 2018. [pdf]

112. S. Das, S. Budisin, S. Majhi, Z. Liu, and Y. L. Guan, "A Multiplier-free Generator for Polyphase Complete Complementary Codes," IEEE Transactions on Signal Processing, vol. 66, no. 5, pp. 1184-1196, Mar. 2018. [pdf] [MATLAB code for Example 6]

113. P. Yang, Y. L. Guan, X.-B. Liu, and Z. Liu, "An Improved Hybrid Turbo Equalizer for Single Carrier Transmission with Impulsive Noise and ISI," IEEE Transactions on Vehicular Technology, vol. 66, vol. 11, pp. 9852-9861, Nov. 2017.

114. X. Li, Z. Liu, Y. L. Guan, and P. Fan, "Two-valued Periodic Complementary Sequences," IEEE Signal Processing Letters, vol. 24, no. 9, pp. 1270-1274, Sept. 2017. [pdf]

115. S. Hu, Z. Liu, Y. L. Guan, C. Jin, Y. Huang, and J.-M. Wu, "Training Sequence Design for Efficient Channel Estimation in MIMO-FBMC Systems," IEEE Access, vol. 5, pp. 4747-4758, Mar. 2017. [pdf]

116. P. Yang, Y. Xiao, Y. L. Guan, Z. Liu, S. Li, and W. Xiang, "Adaptive SM-MIMO for mmWave Communications with Reduced RF Chains," IEEE Journal on Selected Areas in Communications, vol. 35, no. 7, pp. 1472-1485, Apr. 2017.

117. Z. Liu, Y. L. Guan and W. H. Mow, "Asymptotically Locally Optimal Weight Vector Design for a Tighter Correlation Lower Bound of Quasi-Complementary Sequence Sets," IEEE Transactions on Signal Processing, vol. 65, no. 12, pp. 3107-3119, June 2017. [pdf]

118. A. Adhikary, Z. Liu, Y. L. Guan, S. Majhi, and S. Budishin, "Optimal Binary Periodic Almost-Complementary Pairs," IEEE Signal Processing Letters, vol. 23, no. 12, pp. 1816-1820, Aug. 2016. [pdf]

119. P. Yang, Y. Xiao, Y. L. Guan, K. V. S. Hari, A. Chockalingam, S. Sugiura, H. Haas, M. D. Renzo, C. Masouros, Z. Liu, L. Xiao, S. Li, and L. Hanzo, "Single-Carrier SM-MIMO: A Promising Design for Broadband Large-Scale Antenna Systems," IEEE Communications Surveys & Tutorials, vol. 18, no. 3, pp. 1687-1716, Feb. 2016.

120. J. Guo, Z. Shi, Z. Liu, Z. Zhang, and Q. Liu, "Multi-CRC Polar Codes and Their Applications," IEEE Communications Letters, vol. 20, no. 2, pp. 212-215, Feb. 2016.

121. Z. Liu and Y. L. Guan, "16-QAM Almost-Complementary Sequences with Low PMEPR," IEEE Transactions on Communications, vol. 64, no. 2, pp. 668-679, Dec. 2015. [pdf]

122. Z. Liu, Y. L. Guan, and H. H. Chen, "Fractional-Delay-Resilient Receiver for Interference-Free MC-CDMA Communications Based on Complete Complementary Codes," IEEE Transactions on Wireless Communications, vol. 14, no. 3, pp. 1226-1236, Mar. 2015. [pdf]

123. S. Hu, Z. Liu, Y. L. Guan, W. Xiong, G. Bi, and S. Li, "Sequence Design for Cognitive CDMA Communications under Arbitrary Spectrum Hole Constraint," IEEE Journal on Selected Areas in Communications.,  vol. 32, no. 11, pp. 1974-1986, Nov. 2014. [pdf] [MATLAB code for Figure 5]

124. Z. Liu, U. Parampalli, and Y. L. Guan, "Optimal Odd-length Binary Z-Complementary Pairs," IEEE Transactions on Information Theory, vol.  60,  no.  9, pp. 5768-5781, July 2014.[pdf]

125. Z. Liu, Y. L. Guan, and U. Parampalli, "New Complete Complementary Codes for the Peak-to-Mean Power Control in MC-CDMA,"  IEEE Transactions on Communications, vol. 62,  no. 3, pp. 1105-1113,  Mar. 2014. [pdf]  [Matlab code for Example 3]

126. Z. Liu, U. Parampalli, and Y. L. Guan, "On Even-Period Binary Z-Complementary Pairs with Large ZCZs," IEEE Signal Processing Letters, vol. 21, no. 3, pp. 284-287, Mar. 2014. [pdf]

127. Z. Liu, U. Parampalli, Y. L. Guan, and S. Boztas, "A New Weight Vector for a Tighter Levenshtein Bound on Aperiodic Correlation," IEEE Transactions on Information Theory, vol. 61, no. 2, pp. 1356-1366, Feb. 2014. [pdf]

128. Z. Liu, Y. L. Guan, and W. H. Mow, "A Tighter Correlation Lower Bound for Quasi-Complementary Sequence Sets," IEEE Transactions on Information Theory, vol. 60, no. 1, pp. 388-396, Jan. 2014. [pdf]

129. Z. Liu, Y. Li, and Y. L. Guan, "New Constructions of General QAM Golay Complementary Sequences," IEEE Transactions on Information Theory, vol. 59, no. 11, pp. 7684-7692, Nov. 2013. [pdf]

130. Z. Liu, U. Parampalli, Y. L. Guan, and S. Boztas, "Constructions of Optimal and Near-Optimal Quasi-Complementary Sequence Sets from Singer Difference Sets," IEEE Wireless Communication Letters, vol. 2, no. 5, pp. 487-490, Oct. 2013. [pdf]

131. Z. Liu, Y. L. Guan, B. C. Ng, and H. H. Chen, "Correlation and Set Size Bounds of Complementary Sequences With Low Correlation Zones," IEEE Transactions on Communications, vol. 59, no. 12, pp. 3285-3289, Dec. 2011. [pdf]

Zilong's Conference Papers

1. X. Li, Q. Wang, Z. Liu, and Z. Zhou, "Grid Evolution Based on Cluster Fusion for Doubly Fractional Channel Estimation in OTFS Systems," in the 2025 IEEE International Workshop on Signal Design and Their Applications in Communications, 7-11 December, Melbourne, Australia. 

2. S. Das, A. Banerjee, U. Parampalli, and Z. Liu, "Golay-ZCZ Sequence Sets with Flexible Lengths Based on Matrices of Polynomials," in the 2025 IEEE International Workshop on Signal Design and Their Applications in Communications, 7-11 December, Melbourne, Australia. 

3. Y. Wang, D. Cai. Y. Chen, Z. Liu, C. Li, and X. Peng, "Two Novel Constructions of Mutually Orthogonal Complementary Sets," in the 2025 IEEE International Workshop on Signal Design and Their Applications in Communications, 7-11 December, Melbourne, Australia. 

4. C. Bai, P. Fan, Z. Zhou, and Z. Liu, "Orthogonal Chirp Delay-Doppler Division Multiplexing Modulation, " in IEEE VTC-Fall'2025, 19-22 October 2025, Chengdu, China.  

5. H. Huang, Z. Liu, Z. Sui, W. Huang, Noor-A-Rahim Md, H. Wang, and Z. Hu, "Optimal Real-time Communication in 6G Ultra-Massive V2X Mobile Networks," in IEEE VTC-Fall'2025, 19-22 October 2025, Chengdu, China.  

6. Y. Zhang, Q. Yi, L. Musavian, T. Xu, and Z. Liu, "Non-Orthogonal AFDM: A Promising Spectrum-Efficient Waveform for 6G High-Mobility Communications," in IEEE PIMRC'2025, 1-4 September 2025, Istanbul, Turkey. 

7. S. He, L. Meng, G. Yao, Y. L. Guan, D. Gonzalez G, and Z. Liu, "Local Ambiguity Shaping for Doppler-Resilient Sequences under Spectral and PAPR Constraints," in IEEE VTC-Fall'2025, 19-22 October 2025, Chengdu, China. 

8. D. Huang, L. Xiao, X. Chen, J. Zhou, Z. Liu, and P. Xiao, "Collaborative Interference Suppression for LEO Satellite Beam Hopping Systems," in IEEE VTC-Fall'2025, 19-22 October 2025, Chengdu, China. 

9. W. Fan, P. Fan, and Z. Liu, "Priority Random Access and User Barring Design for NOMA-ALOHA in Heterogeneous mMTC," in IEEE VTC-Fall'2025, 19-22 October 2025, Chengdu, China. 

10. S. Soni, R. Makkar, D. Rawal, G. Singh, V. Bohara, and Z. Liu, ``Cooperative Dual-Mode OFDM Index Modulation based Downlink Multi-User NOMA System," in VTC2025-Spring, 17-20 June 2025, Oslo, Norway.

11. Y. Zhao, P. Yang, Z. Liu, L. Qian, and S. Zammit, ``DFT-s-OFDM with Interleaved Subslot-Index Modulation: Waveform Design with ISAC," in the WS08 ICC'2025 Workshop, 8-12 June, 2025, Montreal, Canada. 

12. K. Jiang, P. Yang, T. Quek, Z. Liu, and S. Zammit, "Multi-Constellation Signal Designs aided Affine Frequency Division Multiplexing for 6G Communication Systems," in the FCN2024: Mobile and Wireless Communications Symposium, 18-22 November 2024, Malta.  

13. Q. Zeng, K. Yang, and Z. Liu, ``Factor Graph Hopping Based FH-SCMA for Band-Limited and Large-Scale IoT Networks," in the 2024 IEEE 100th Vehicular Technology Conference (VTC2024-Fall), 7-10 October 2024, Washington DC, USA. Accepted for presentation. 

14. D. Fukui, Y. Takahashi, G. Song, T. Kimura, Z. Liu, and J. Cheng, ``Throughput Analysis of SIC-based Two-Device Slotted ALOHA with Feedback Over Nakagami-m Fading Channels," in the 2024 International Symposium on Information Theory and Its Applications (ISITA'2024), 10-13 November, 2024, Taipei, Taiwan, Accepted for publication. 

15. G. Chen, Y. Yan, X. Wang, Z. Liu, and B. Zhou, ``Joint Lambertian Model Calibration and Positioning of Photodiode Devices Towards Integrated Optical Wireless Communication and Sensing," in the 2024 International Conference on Communications in China, 7-9 August, 2024, Hangzhou, China, Accepted for Presentation. 

16. Z.-M. Huang, C.-Y. Pai, Z. Liu, and C.-Y. Chen, "A New Construction of Enhanced Cross-Z-Complementary Sets with Maximum Zero Correlation Zone," in the 2024 IEEE International Symposium on Information Theory (ISIT), 7-12 July, 2024, Athens, Greece, Accepted for Presentation. 

17. Q. Yi, P. Yang, Z. Liu, Y. Huang, and S. Zammit, "Model-Driven Federated Learning for Channel Estimation in Millimeter-Wave Massive MIMO Systems," in the 2024 IEEE Wireless Communications and Networking Conference (WCNC), April 21-24, 2024 in Dubai, UAE. 

18. S. Chaturvedi, V. Bohara, Z. Liu, A. Srivastava, and P. Xiao, "Resource Allocation for Sum-Rate Maximization in Multi-UAV SCMA Networks," in the 2023 IEEE Globecom Workshop: Next Generation Multiple Access (NGMA) for Future Wireless Communications, Accepted for prensentation. 

19. Q. Wang, X. Ji, L. Qian, Z. Liu, X. Du and P.-Y. Kam, "MINE-based Geometric Constellation Shaping in AWNG Channel," in the 2023 IEEE/CIC International Conference on Communications in China (ICCC Workshops), Dalian, China, 11-13 August 2023. 

20. C.-Y. Pai, Z. Liu, C. Li, and C.-Y. Chen, ``Sparse Complementary Pairs with Additional Aperiodic ZCZ Property," in the 2023 IEEE International Symposium on Information Theory (ISIT), 25 June-30 June, 2023, Taipei, Taiwan, Accepted for Presentation. 

21. P. Gao, J. Zhu, G. Chen, Z. Liu, P. Xiao, and C. H. Foh, ``Efficient Multiuser Detection for Uplink Grant-Free NOMA via Weighted Block Coordinate Descend," in WS19 IEEE ICC 2023 5th Workshop on ULMC6GN - Ultra-high speed, low latency and massive communication for futuristic 6G networks, Accepted for publication. 

22. Q. Luo, Z. Mheich, G. Chen, P. Xiao, and Z. Liu, ``Reinforcement Learning Aided Link Adaptation for Downlink NOMA Systems with Channel Imperfections," in WS-02: Next Generation Multiple Access (NGMA) for Future Wireless Communications at IEEE Wireless Communications and Networking Conference (WCNC), March 26 - 29, 2023 in Glasgow, Scotland. Accepted for Presentation. 

23. J. Li, J. Tang, and Z. Liu, ``Deep Reinforcement Learning for Data Freshness-oriented Scheduling in Industrial IoT," in the IEEE GLOBECOM'2022, December 4-8, Rio de Janeiro, Brazil. Accepted for Presentation. 

24. L. Deng, Y. L. Guan, Z. Liu, Z. Shi, and Z. Zhang, "BCH-SPC based Cubic Turbo Product Coding," in the The 10th IEEE International Workshop on Signal Design and its Applications in Communications (IWSDA’2022), Colchester, UK, 1-5 August, 2022. Accepted for Presentation. 

25. Y. Zhou, Z. Zhou, Z. Liu, Y. Yang, P. Yang, and P. Fan, "Symmetrical Z-Complementary Code Sets for Optimal Training in Generalized," in the The 10th IEEE International Workshop on Signal Design and its Applications in Communications (IWSDA’2022), Colchester, UK, 1-5 August, 2022. Accepted for Presentation. 

26. P. Kazaov, M. Zheng, and Z. Liu, "A Gear Construction of CRC Codes for Enhanced Polar Decoding," in the The 10th IEEE International Workshop on Signal Design and its Applications in Communications (IWSDA’2022), Colchester, UK, 1-5 August, 2022. Accepted for Presentation. 

27. L. Meng, Y. L. Guan, Y. Ge, and Z. Liu, "A Novel Design of Flag Sequences for Low-Complexity Delay-Doppler Estimation," in the The 10th IEEE International Workshop on Signal Design and its Applications in Communications (IWSDA’2022), Colchester, UK, 1-5 August, 2022. Accepted for Presentation. 

28. H. Wen, Q. Lu, W. Yuan, Z. Liu, and P. Xiao, "OAMP for Low Complexity Detection in Large-Scale LDS Systems," in the The 10th IEEE International Workshop on Signal Design and its Applications in Communications (IWSDA’2022), Colchester, UK, 1-5 August, 2022. Accepted for Presentation. 

29. S. Das, A. Banerjee, and Z. Liu, "New Family of Cross Z-Complementary Sequences with Large ZCZ Width," in the 2022 IEEE International Symposium on Information Theory (ISIT), 26 June-1 July, 2022, Espoo, Finland, Accepted for Presentation. 

30.  C.-Y. Pai, Z. Liu, Y.-Q. Zhao, Z.-M. Huang, and C.-Y. Chen, "Designing Two-Dimensional Complete Complementary Codes for Omnidirectional Transmisstion in Massive MIMO Systems," in the 2022 IEEE International Symposium on Information Theory (ISIT), 26 June-1 July, 2022, Espoo, Finland, Accepted for Presentation. 

31. D. Wu, L. Deng, Z. Liu, Y. Zhang, and Y. Han, "RL Random Access for Delay-Constrained Heterogeneous Wireless Networks: A Two-User Case," in IEEE GLOBECOM 2021, December 7-11, Madrid, Spain, Accepted. 

32. Q. Zeng, Z. Liu, X. Liu, J. Zhong, and P. Xiao, "Frequency-Hopping Based SCMA for Massive Connectivity in Multi-Cell Networks," in IEEE VTC2021-Fall, Online, 27-30 September 2021, Accepted. 

33. Z. Ye, Z. Zhou, P. Fan, X. Lei, Z. Liu, and X. Tang, "Signal Design with Low/Zero Ambiguity Zone Characteristics for Joint Radar-Communication Systems," in the 2021 IEEE/CIC Internatinoal Conference on Communications in China (ICCC), 20-30 July 2021, Xiamen, China. Accepted.  

34. Y. Zhang, Z. Liu, P. Xiao, and F. Guo, "A Novel SCMA Codebook Design Method Based on Low Error Probability Criteria," in the 2021 IEEE 6th International Conference on Signal and Image Processing (ICSIP), July 9-11, 2021, Nanjing, China. 

35. Z. Mheich, I. Hemadeh, Z. Liu, and P. Xiao, "Low-Complexity Expectation Propagation Detection for Uplink MIMO-SCMA Systems," in the 2020 International Conference on UK-China Emerging Technologies (UCET), Aug. 2020, Accepted. 

36. G. Singh, A. Srivastava, V. Bohara, and Z. Liu, "Comparison of PD-NOMA for RF and VLC based Vehicular Communication under Various Weather Conditions," in the 2020 World Wireless Research Forum (WWRF'2020), Accepted & Presented. 

37. Z. Liu, P. Yang, Y. L. Guan, and P. Xiao, "Cross Z-Complementary Pairs (CZCPs) for Optimal Training in Broadband Spatial Modulation Systems," in the 2020 IEEE International Symposium on Information Theory (ISIT'2020), Las Angeles, CA, USA, June 2020, Accepted. [pdf] [slides]

38. H. Chen, D. Mi, Z. Liu, P. Xiao, and R. Tafazolli, "Rate-Splitting for Overloaded Multigroup Multicast: Error Performance Evaluation," in the IEEE ICC'20 Workshop - RSRIM-B5G, Dublin, Ireland. June 2020. Accepted. 

39. S. Das, U. Parampalli, S. Majhi, and Z. Liu, "An Introduction to Z-Paraunitary Matrices," in the 2019 IEEE International Workshop on Signal Design and its Applications in Communications (IWSDA'2019), Dongguan, China, October 2019. Presented.  

40. Z. Liu, P. Xiao, and Z. Mheich, "Power-Imbalanced Low-Density Signatures (LDS) From Eisenstein Numbers," in the 16th IEEE Asia-Pacific Wireless Communication Symposium (APWCS'2019), Singapore, August 2019, Presented.PDF

41. P. Sarkar, S. Majhi, and Z. Liu, "A Direct and Generalized Construction of Polyphase Complementary Set With Low PMEPR," Proc. 2019 IEEE Int. Symposium on Information Theory (ISIT'2019), Paris, France, July 2019. Accepted. 

42. S. Das, U. Parampalli, S. Majhi, and Z. Liu, "Near-Optimal Zero Correlation Zone Sequence Sets from Paraunitary Matrices", Proc. 2019 IEEE Int. Symposium on Information Theory (ISIT'2019), Paris, France, July 2019. Accepted. 

43. K. Anand, Y. L. Guan, Z. Liu, Y. Yang, Z. Zhou, P. Fan, and E. Gunawan, "Pilot Design for Channel Estimation in Doubly Selective Channel," in 2018 IEEE International Conference on Communication Systems (ICCS'2018), Accepted. 

44. S. Hu, Q. Luo, J. Zhang, Z. Liu, D. Huang, and Y. Gao, "Practical Implementation of MIMO-FBMC System," The International Conference on Communications, Signal Processing, and Systems (CSPS'2018), Accepted. 

45. X. Liu, Y. L. Guan, S. N. Koh, D. Teo, and Z. Liu, "On the Performance of Single-Channel Source Separation of Two Co-Frequency PSK Signals with Carrier Frequency Offsets," IEEE MILCOM 2018, Accepted. 

46. S. Hu, J. Zhang, J. Tang, Z. Liu, P. Xiao, and Y. Gao, "Real-Valued Orthogonal Sequences for Ultra-Low Overhead Channel Estimation in MIMO-FBMC Systems," MLICOM 2018 Proceedings (LNCST), Accepted. 

47. S. Das, S. Majhi, S. Budishin, Z. Liu, and Y. L. Guan, “A Novel Multiplier-Free Generator for Complete Complementary Codes," the 23rd Asia-Pacific Conference on Communications (APCC’2017), Perth, Australia, December 11-13, 2017. Accepted.

48. J. Wang, P. Fan, Y. Yang, Z. Liu, and Y. L. Guan, “Doppler Resilient Z-Complementary Waveforms From ESP Sequences,” in The Eighth IEEE International Workshop on Signal Design and its Applications in Communications (IWSDA’17), Sapporo, Japan, 24-28 September 2017, pp. 19-23.

49. T. Liu, P. Fan, J. Li, Y. Yang, Z. Liu, and Y. L. Guan, “Sequence Design for Optimized Ambiguity Function and PAPR Under Arbitrary Spectrum Hole Constraint,”in The Eighth IEEE International Workshop on Signal Design and its Applications in Communications (IWSDA’17), Sapporo, Japan, 24-28 September 2017, pp. 173-177.

50. A. Adhikary, S. Majhi, Z. Liu, and Y. L. Guan, “New Optimal Binary Z-Complementary Pairs of Odd Lengths,” in The Eighth IEEE International Workshop on Signal Design and its Applications in Communications (IWSDA’17), Sapporo, Japan, 24-28 September 2017, pp. 14-18.

51. X.-B. Liu, Y. L. Guan, S. N. Koh, Z. Liu, and P. Wang, "Single-Channel Blind Separation of Co-Frequency PSK Signals with Unknown Carrier Frequency Offsets,"  2017 IEEE Military Communications Conference MILCOM'2017, Baltimore, USA, 23-25 October 2017, pp. 641-646.

52. Z. Liu, Y. L. Guan, and W. H. Mow, "A Frequency-Domain Approach to Tightening the Generalized Levenshtein Bound," Proc. 2017 IEEE Int. Symposium on Information Theory (ISIT'2017), Aachen, June 2017, pp. 1-5. 

53. S. Hu, Z. Liu, S. Fang, Y. L. Guan, G. Wu, and Y. Xiao, "ICI-Resilient Cognitive Radio Sequences for Transform Domain Communication Systems," IEEE VTC Fall 2015, Boston, MA, pp. 1-6. 

54. Z. Liu, Y. L. Guan, S. Hu, and U. Parampalli, "Optimal Spectrally-Constrained Sequences," Proc. 2015 IEEE Int. Symposium on Information Theory (ISIT'2015), Hong Kong, June 2015, pp. 2692-2696. 

55. Z. Liu, Y. L. Guan, and U. Parampalli, "A New Construction of Zero Correlation Zone Sequences from Generalized Reed-Muller Codes," in Proc. 2014 IEEE Information Theory Workshop (ITW'2014), Hobart, Tasmania, Australia, Nov. 2014, pp. 591-595. 

56. Z. Liu, Y. L. Guan, and S. Hu, "A New Algorithm for Cognitive Radio Sequences with Low Aperiodic Autocorrelations and Low PAPR," in 2014 Spring Workshop on Information Theory and Communications, Taiwan, Jan. 2014.

57. Z. Liu, Y. L. Guan, and U. Parampalli, "64-QAM Complementary Sequences for High-Rate OFDM Transmission,"  in The Sixth IEEE International Workshop on Signal Design and its Applications in Communications (IWSDA'13), Tokyo, Japan, Oct. 2013, pp.  174-177. 

58. Z. Liu, Y. L. Guan, and U. Parampalli, "On Optimal Binary Z-Complementary Pair of Odd-Period," in Proc. 2013 IEEE Int. Symposium on Information Theory (ISIT'2013), Istanbul, Turkey, July 2013, pp. 3125-3129.

59. Z. Liu, Y. L. Guan, S. Boztas, and U. Parampalli, "Quadratic weight vector for tighter aperiodic Levenshtein bound," in Proc. 2013 IEEE Int. Symposium on Information Theory (ISIT'2013), Istanbul, Turkey, July 2013, pp. 3130-3134.

60. Z. Liu and Y. L. Guan, "Meeting the Levenshtein Bound with Equality by Weighted-Correlation Complementary Set," in Proc. 2012 IEEE Int. Symposium on Information Theory (ISIT’'2012), MIT, Boston, US, July 2012, pp. 1010-1013.

61. Z. Liu, Y. L. Guan, and W. H. Mow, "Improved Lower Bound for Quasi-Complementary Sequence Set," in Proc. 2011 IEEE Int. Symposium on Information Theory (ISIT’'2011), St. Petersburg, Russia, Aug. 2011, pp. 489-493.

62. Z. Liu, Y. L. Guan, and B. C. Ng, "A New Class of Quadriphase Even-shift Orthogonal Sequences," in The Fourth IEEE International Workshop on Signal Design and its Applications in Communications(IWSDA'09), Fukuoka, Japan, Oct. 2009, pp. 12-15.