Publications
Overview
Full publications list is available at the following website link:
Google Scholar: https://scholar.google.co.uk/citations?user=MJrAW-4AAAAJ&hl=en
Book Chapters
1. I. Darwazeh, T. Xu, and R. C. Grammenos, Signal Processing for 5G: Algorithms and Implementations. Wiley, 2016, ch. Bandwidth Compressed Multicarrier Communication: SEFDM.
2. I. Darwazeh, R. C. Grammenos, and T. Xu, 5G Mobile Communications. Springer, 2016, ch. Spectrally Efficient Frequency Division Multiplexing for 5G.
Paper Publications
Journal Publications
1. T. Xu, Z. Wei, T. Xu, and G. Zheng "A Low-Cost Multi-Band Waveform Security Framework in Resource-Constrained Communications," in IEEE Transactions on Wireless Communications, Jan, 2024.
2. Y. Zhang, T. Liu, C. Jin, T. Xu, M. Tan, J. Zhao, and T. Xu, “Improved carrier phase recovery for high-capacity optical communication systems with high-order modulation formats”, Optics Communications, Volume 557, 2024.
3. T. Xu and I. Darwazeh, “Identification and practical validation of spectrally efficient non-orthogonal frequency shaping waveform,” Nature Communications Engineering, vol. 2, no. 58, 2023.
4. Y. Chen, W. Yuan, and T. Xu, “Coding Split and Adjustment to Defend OFDM-IM Against Jamming Attacks,” in IEEE Communications Letter, vol. 27, no. 2, pp. 457-461, Feb. 2023,
5. T. Xu, F. Liu, C. Masouros, and I. Darwazeh, “An Experimental Proof of Concept for Integrated Sensing and Communications Waveform Design,” in IEEE Open Journal of the Communications Society, vol. 3, pp. 1643-1655, 2022.
6. J. Ding, T. Liu, T. Xu, W. Hu, S. Popov, M. S. Leeson, J. Zhao, and T. Xu, “Intra-channel nonlinearity mitigation in optical fiber transmission systems using perturbation-based neural network,” Journal of Lightwave Technology, 40, 7106-7116 (2022).
7. Z. Liu, T. Xu, C. Jin, T. Xu, M. Tan, J. Zhao, and T. Liu, "Analytical optimization of wideband nonlinear optical fiber communication systems," Opt. Express 30, 11345-11359 (2022).
8. Y. Chen, T. Xu, and I. Darwazeh, “Index Modulation Pattern Design for Non-Orthogonal Multicarrier Signal Waveforms,” in IEEE Transactions on Wireless Communications, vol. 21, no. 10, pp. 8507-8521, Oct. 2022.
9. T. Xu, "Waveform-Defined Security: A Low-Cost Framework for Secure Communications," in IEEE Internet of Things Journal, vol. 9, no. 13, pp. 10652-10667, Jul., 2022.
10. T. Xu, T. Xu, and I. Darwazeh, “Deep Intelligent Spectral Labelling and Receiver Signal Distribution for Optical Links”, Optics Express, 29, 39611-39632 (2021).
11. T. Xu, C. Masouros and I. Darwazeh, "Design and Prototyping of Hybrid Analog–Digital Multiuser MIMO Beamforming for Nonorthogonal Signals," in IEEE Internet of Things Journal, vol. 7, no. 3, pp. 1872-1883, Mar. 2020.
12. T. Xu, T. Xu, P. Bayvel, and I. Darwazeh, “Non-Orthogonal Signal Transmission over Nonlinear Optical Channels,” IEEE Photonics Journal, vol. 11, no. 3, pp. 1–13, Jun. 2019.
13. T. Xu, C. Masouros, and I. Darwazeh, “Waveform and space precoding for next generation downlink narrowband IoT,” IEEE Internet of Things Journal, vol. 6, no. 3, pp. 5097–5107, Jun. 2019.
14. T. Xu, H. Ghannams, and I. Darwazeh, “Practical evaluations of SEFDM: Timing offset and multipath impairments,” Infocommunications Journal, vol. X, no. 10, pp. 1–9, Dec. 2018. (invited).
15. T. Xu and I. Darwazeh, “Non-orthogonal narrowband Internet of Things: A design for saving bandwidth and doubling the number of connected devices,” IEEE Internet of Things Journal, vol. 5, no. 3, pp. 2120–2129, Jun. 2018.
16. T. Xu and I. Darwazeh, “Transmission experiment of bandwidth compressed carrier aggregation in a realistic fading channel,” IEEE Transactions on Vehicular Technology, vol. 66, no. 5, pp. 4087–4097, May 2017.
17. T. Xu, S. Mikroulis, J. E. Mitchell and I. Darwazeh,” Bandwidth Compressed Waveform for 60 GHz Millimeter-Wave Radio over Fiber Experiment,” IEEE Journal of Lightwave Technology, vol. 34, no. 14, pp. 3458–3465, Jul. 2016.
18. D. Nopchinda, T. Xu, R. Maher, B. Thomsen, and I. Darwazeh, “Dual polarization coherent optical spectrally efficient frequency division multiplexing,” IEEE Photonics Technology Letters, vol. 28, no. 1, pp. 83–86, Jan. 2016.
19. P. Haigh, S. T. Le, S. Zvanovec, Z. Ghassemlooy, P. Luo, T. Xu, P. Chvojka, T. Kanesan, E. Giacoumidis, P. Canyelles-Pericas, H. L. Minh, W. Popoola, S. Rajbhandari, I. Papakonstantinou, and I. Darwazeh, “Multi-band carrierless amplitude and phase modulation for bandlimited visible light communications systems,” IEEE Wireless Communications, vol. 22, no. 2, pp. 46–53, Apr. 2015.
20. T. Xu and I. Darwazeh, “A soft detector for spectrally efficient systems with non-orthogonal overlapped sub-carriers,” IEEE Communications Letters, vol. 18, no. 10, pp. 1847-1850, Oct. 2014.
21. I. Darwazeh, T. Xu, T. Gui, Y. Bao, and Z. Li, “Optical SEFDM system; bandwidth saving using non-orthogonal sub-carriers,” IEEE Photonics Technology Letters, vol. 26, no. 4, pp. 352–355, Feb. 2014.
22. T. Xu, R. C. Grammenos, F. Marvasti, and I. Darwazeh, “An improved fixed sphere decoder employing soft decision for the detection of non-orthogonal signals,” IEEE Communications Letters, vol. 17, no. 10, pp. 1964–1967, Oct. 2013.
Conference Publications (Invited)
23. T. Xu and I. Darwazeh, "DFT-Spread Spectrally Efficient Non-Orthogonal FDMA," 2019 International Conference on Wireless Networks and Mobile Communications (WINCOM), Fez, Morocco, 2019, pp. 1-5. (invited).
24. L. Zhu, T. Xu and I. Darwazeh, "Fast-OFDM Transmission with Duobinary 3-PSK Modulation," 2019 International Conference on Wireless Networks and Mobile Communications (WINCOM), Fez, Morocco, 2019, pp. 1-6. (invited).
25. I. Darwazeh, H. Ghannam, and T. Xu, “The first 15 years of SEFDM: a brief survey,” in 11th IEEE International Symposium on Communication Systems, Networks & Digital Signal Processing (CSNDSP18), Budapest, Hungary, Jul. 2018, pp. 1–7. (invited).
26. T. Xu, T. Xu, and I.Darwazeh, “Deep learning for interference cancellation in non-orthogonal signal based optical communication systems,” in IEEE Progress in Electromagnetics Research Symposium – Spring (PIERS), Toyama, Japan, Aug. 2018, pp. 241–248. (invited).
27. T. Xu and I. Darwazeh, “Nyquist-SEFDM: pulse shaped multicarrier communication with sub-carrier spacing below the symbol rate,” in IEEE 2016 10th International Symposium on Communication Systems, Networks & Digital Sign (CSNDSP) (CSNDSP16), Prague, Czech Republic, Jul. 2016, pp. 1–6. (invited).
28. T. Xu and I. Darwazeh, “Experimental validations of bandwidth compressed multicarrier signals,” in IEEE WoWMoM’16 Workshop on Fifth Generation Wireless: From Bits to Packets (5GB2P) (IEEE WoWMoM 5GB2P’16), Coimbra, Portugal, Jun. 2016, pp. 1–10. (invited).
29. S. Mikroulis, T. Xu, and I. Darwazeh, “Practical demonstration of spectrally efficient FDM millimeter-wave radio over fiber systems for 5G cellular networking,” in Proc. SPIE, vol. 9772, San Francisco, CA, USA, 2016, pp. 97720I–1–97720I–8 (invited).
Conference Publications (Regular)
30. Y. Lin, C, Wang, J. Si, and T. Xu, “Anti-Eavesdropping and Anti-Jamming Waveform Design with Coding Split Index Modulation”, in 2023 IEEE ICCC.
31. Z. Wei, C. Masouros, T. Xu, and Y. Jiang, “Interference exploitation with Multi-Antenna receivers and heterogeneous throughput requirements,” in 2022 IEEE Global Communications Conference: Selected Areas in Communications: Big Data (Globecom2022 SAC BD), Rio de Janeiro, Brazil, Dec. 2022.
32. J. Qi, T. Xu, Z. Liu, C. Jin, T. Xu, L. Li, L. Kanthan, J. Zhao, and T. Liu, “Amplifier limited information rates in high-speed optical fiber communication systems,” in Optoelectronic Devices and Integration XI, X. Zhang, B. Li, C. Yu, and X. Zhang, Eds., vol. 12314, International Society for Optics and Photonics. SPIE, 2022, p. 1231404.
33. T. Xu, F. Liu, C. Masouros, and I. Darwazeh, “Proof of concept experiments of joint waveform design for integrated sensing and communications,” in 1st ACM MobiCom Workshop on Integrated Sensing and Communication Systems (ISACom 2022) (ISACom 2022), Sydney, Australia, Oct. 2022.
34. Y. Chen, T. Xu, and I. Darwazeh, “Min-Max hamming distance considerations for activation pattern design in index modulation,” in 2022 IEEE/CIC International Conference on Communications in China (ICCC) (IEEE ICCC 2022), Sanshui, Foshan, China, Aug. 2022.
35. T. Xu and Z. Wei, "Waveform Defence Against Deep Learning Generative Adversarial Network Attacks," 2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP), 2022, pp. 503-508.
36. T. Xu, “Waveform-Defined Privacy: A Signal Solution to Protect Wireless Sensing,” IEEE Vehicular Technology Conference (VTC Fall), Workshop on Integrated Sensing and Communication towards 6G, Sept. 2021.
37. T. Xu and I. Darwazeh, “Faster URLLC: Deep Learning Waveform Fingerprinting,” in IEEE ICC 2021 Workshop on Ultra-high speed, Low latency and Massive Communication for futuristic 6G Networks (WS24 ICC'21 Workshop - ULMC6GN), Montreal, Canada, Jun. 2021.
38. Z. Wei, C. Masouros, and T. Xu, “Constructive Interference based Joint Combiner and Precoder Design in Multiuser MIMO Systems,” in IEEE ICC 2021 Workshop on Emerging Topics in 6G Communications (WS08 ICC'21 Workshop - Emerging6G-Com), Montreal, Canada, Jun. 2021.
39. Y. Zhang, T. Xu, J. Ding, Z. Wang, T. Xu, J. Zhao, and T. Liu, “Carrier phase recovery in optical fiber communication systems using high order modulation formats,” in Semiconductor Lasers and Applications XI, W. Li, W. H. Hofmann, and Y. Su, Eds., vol. 11891, International Society for Optics and Photonics. SPIE, 2021, pp. 14 – 23.
40. Z. Liu, T. Xu, J. Ding, Y. Zhang, M. Li, T. Xu, and T. Liu, “Accuracy of EGN model in ultra-wideband optical fiber communication systems,” in Semiconductor Lasers and Applications XI, W. Li, W. H. Hofmann, and Y. Su, Eds., vol. 11891, International Society for Optics and Photonics. SPIE, 2021, pp. 31 – 37.
41. T. Xu, “Waveform-Defined Security Enhancement via Signal Generation Optimization,” IEEE Global Communications Conference (IEEE GLOBECOM Workshop-5GWiS), Dec. 2020.
42. T. Xu and I. Darwazeh, “Wavelet Classification for Non-Cooperative Non-Orthogonal Signal Communications,” IEEE Global Communications Conference (IEEE GLOBECOM Workshop-AT5Gp), Dec. 2020.
43. T. Xu, “Waveform-defined security: a framework for secure communications,” in IEEE/IET 12th International Symposium on Communication Systems, Networks & Digital Signal Processing (CSNDSP2020), Porto, Portugal, Jul. 2020.
44. Z. Wei, C. Masouros, F. Liu, and T. Xu, “Optimal closed-form designs for directional modulation with practical hardware limitations,” in 2020 IEEE Global Communications Conference: Communication Theory (Globecom2020 CT), Taipei, Taiwan, Dec. 2020.
45. X. Qiu, Z. Li, X. Sun, and T. Xu, “A lightweight intelligent authentication approach for intrusion detection,” in 2020 IEEE 31st Annual International Symposium on Personal, Indoor and Mobile Radio Communications, London, United Kingdom (Great Britain), 2020.
46. Z. Wei, C. Masouros, T. Xu, and K. K. Wong, “Robust interference exploitation for multi-cell transmission,” in 2020 IEEE 31st Annual International Symposium on Personal, Indoor and Mobile Radio Communications, London, United Kingdom (Great Britain), 2020.
47. T. Xu and I. Darwazeh, “Deep Learning for Over-the-Air Non-Orthogonal Signal Classification,” IEEE Vehicular Technology Conference (VTC Spring), Antwerp, Belgium, May 2020.
48. T. Xu and I. Darwazeh, “Non-orthogonal frequency division multiple access,” IEEE Vehicular Technology Conference (VTC Spring), Antwerp, Belgium, May 2020.
49. X. Liu, T. Xu, and I. Darwazeh, “Coexistence of orthogonal and nonorthogonal multicarrier signals in beyond 5G scenarios,” in 2020 2nd 6G Wireless Summit (6G SUMMIT) (6G Summit 2020), Levi, Lapland, Finland, 2020.
50. T. Xu and I. Darwazeh, “Prototyping of Singular Value Reconstruction Precoding for Reliable Non-Orthogonal IoT Signals,” in IEEE 30th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), Istanbul, Turkey, Sept. 2019, pp. 1-6.
51. T. Xu, F. Liu, A, Li, C. Masouros, and I. Darwazeh, “Constructive Interference Precoding for Reliable Non-Orthogonal IoT Signaling,” IEEE International Conference on Computer Communications (IEEE INFOCOM WKSHPS: CNERT 2019), Paris, France, Apr. 2019, pp. 590–595.
52. T. Xu and I. Darwazeh, “Design and prototyping of neural network compression for non-orthogonal IoT signals,” in 2019 IEEE Wireless Communications and Networking Conference (WCNC) (IEEE WCNC 2019), Marrakech, Morocco, Apr. 2019.
53. T. Xu and I. Darwazeh, “Non-Orthogonal waveform scheduling for next generation narrowband IoT,” in 37th IEEE Global Communications Conference (IEEE GLOBECOM Workshop-UHS5G), Abu Dhabi, United Arab Emirates, Dec. 2018, pp. 1–6.
54. T. Xu and I. Darwazeh, “Half-Sinc Waveform Design for Narrowband IoT,” in IEEE 29th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC), Bologna, Italy, Sept. 2018, pp. 600–601.
55. T. Xu and I. Darwazeh, “Uplink narrowband IoT data rate improvement: dense modulation formats or non-orthogonal signal waveforms?” in IEEE 29th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC Workshop-CorNer), Bologna, Italy, Sept. 2018, pp. 142–146.
56. T. Xu and I. Darwazeh, “Experiment for Non-Interfering coexistence of Non-Orthogonal SEFDM signals and LTE,” in 11th IEEE International Symposium on Communication Systems, Networks & Digital Signal Processing (CSNDSP18), Budapest, Hungary, Jul. 2018, pp. 1–6.
57. W. Ozan, H. Ghannam, T. Xu, P. A. Haigh, and I. Darwazeh, “Experimental evaluation of channel estimation and equalization in Non-Orthogonal FDM systems,” in 2018 11th International Symposium on Communication Systems, Networks Digital Signal Processing (CSNDSP), Budapest, Hungary, Jul. 2018, pp. 1–6.
58. T. Xu and I. Darwazeh, “Experimental Validations on Self Interference Cancelled Non-Orthogonal SEFDM Signals”, in 2018 IEEE 87th Vehicular Technology Conference (VTC Spring), Porto, Portugal, Jun. 2018, pp. 1–5.
59. T. Xu and I. Darwazeh, “Multi-Sphere decoding of block segmented SEFDM signals with large number of sub-carriers and high modulation order,” in IEEE International Conference on Wireless Networks and Mobile Communications (WINCOM), Rabat, Morocco, Nov. 2017, pp. 1–6.
60. T. Xu and I. Darwazeh, “Bit precision study of a non-orthogonal iterative detector and its RTL modelling verifications,” in IEEE 28th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC), Montreal, QC, Canada, Oct. 2017, pp. 1–5.
61. T. Xu and I. Darwazeh, “Experimental over-the-air testing for coexistence of 4G and a spectrally efficient non-orthogonal signal,” in IEEE 28th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC), Montreal, QC, Canada, Oct. 2017, pp. 1–5.
62. T. Xu and I. Darwazeh, “A joint waveform and precoding design for non-orthogonal multicarrier signals,” in IEEE Wireless Communications and Networking Conference (WCNC), San Francisco, CA, USA, Mar. 2017, pp. 1–6.
63. T. Xu and I. Darwazeh, “Bandwidth compressed carrier aggregation,” in IEEE ICC 2015 - Workshop on 5G & Beyond - Enabling Technologies and Applications (ICC15 - Workshops 23), London, United Kingdom, Jun. 2015, pp. 1107-1112.
64. S. Mikroulis, T. Xu, J. E. Mitchell and I. Darwazeh, “First demonstration of a spectrally efficient FDM radio over fiber system topology for beyond 4G cellular networking,” in 20th IEEE European Conference on Networks and Optical Communications - (NOC), London, United Kingdom, Jun. 2015, pp. 1–5.
65. T. Xu and I. Darwazeh, “Spectrally efficient FDM: spectrum saving technique for 5G?” in 1st IEEE International Conference on 5G for Ubiquitous Connectivity 2014 (5GU2014), Levi, Finland, Nov. 2014, pp. 273–278.
66. T. Xu and I. Darwazeh, “Multi-Band reduced complexity spectrally efficient FDM systems,” in 9th IEEE/IET International Symposium on Communication Systems, Networks & Digital Signal Processing 2014 (CSNDSP14), Manchester, United Kingdom, pp. 904-909, Jul. 2014.
67. T. Xu and I. Darwazeh, “M-QAM signal detection for a non-orthogonal system using an improved fixed sphere decoder,” in 9th IEEE/IET International Symposium on Communication Systems, Networks & Digital Signal Processing 2014 (CSNDSP14), Manchester, United Kingdom, pp. 623-627, Jul. 2014.
68. I. Darwazeh, T. Xu, T. Gui, Y. Bao, and Li, “Optical spectrally efficient FDM system for electrical and optical bandwidth saving,” in IEEE ICC 2014 - Optical Networks and Systems (ICC’14 ONS), Sydney, Australia, pp. 3432-3437, Jun. 2014.
69. T. Xu, R. C. Grammenos, and I. Darwazeh, “FPGA implementations of real-time detectors for a spectrally efficient FDM system,” in 20th IEEE International Conference on Telecommunications (ICT), Casablanca, Morocco, May 2013, pp. 1–5.