Feng Xi's Homepage
I am currently an Associate Professor with the Department of Electronic Engineering, School of Electronic and Optical Engineering, Nanjing University of Science and Technology (NJUST), Nanjing, China.
From 2018 to 2019, I was a Visiting Scholar with the Preston M. Green Department of Electrical and Systems Engineering, Washington University in St. Louis (WUSTL), MO, US.
I am always looking for graduate students with background in signal processing, communication, applied mathematics and machine learning. I also have some research training programs for undergraduate students.
If you are interested in our research areas, please email me, stating your research interests along with a copy of your CV.
Current Research Interests
Machine learning-based Cognitive Processing
Cognitive radar, spectrum-sharing radar
Statistical signal and array signal processing
Convex optimization applied in for communication and radar systems
News Update
We have two papers accepted by the ICASSP 2021, the annual flagship conference of the IEEE Signal Processing Society. Look forward to discussing with you on ICASSP 2021.
Our work "BiLiMO: Bit-Limited MIMO Radar via Task-Based Quantization", collaborated with Dr. Nir Shlezinger and Prof. Yonina C. Eldar, has been uploaded to ArXiv.
Our paper entitled "Joint angle and Doppler frequency estimation for MIMO radar with one-bit sampling: a maximum likelihood-based method" was accepted by IEEE Trans. on Aerospace and Electronic Systems.
Our paper entitled "Interferometric Phase Retrieval for Multimode InSAR via Sparse Recovery" was accepted by IEEE Trans. Geoscience and Remote Sensing.
Our paper entitled "Gridless Parameter Estimation for One-Bit MIMO Radar With Time-Varying Thresholds" was accepted by IEEE Trans. Signal Process..
I will visit Prof. Arye Nehorai's lab in Washington University in St. Louis from Oct. 2018 to Sept. 2019.
Our paper entitled "Block sparse representation and suppression of narrow-band interference signals for quadrature compressive sampling radar" was accepted by Signal Processing.
Selected Publications
Journal Publications:
[J29] Feng Xi, Yijian Xiang, Zhen Zhang, Shengyao Chen, and Arye Nehorai, "Joint angle and Doppler frequency estimation for MIMO radar with one-bit sampling: a maximum likelihood-based method," to appear in IEEE Trans. on Aerospace and Electronic Systems. [PDF][Summary]
[J28] Huizhang Yang, Chenzhi Chen, Shengyao Chen, Feng Xi, Zhong Liu, "Interferometric Phase Retrieval for Multimode InSAR via Sparse Recovery", to appear in IEEE Transactions on Geoscience and Remote Sensing. [IEEE Xplore]
[J27] Shengyao Chen, Zhiyong Cheng, Huizhang Yang, Feng Xi, Zhong Liu, "Sub-Nyquist sampling with independent measurements", Signal Processing, vol 170, 107435, May 2020. [ScienceDirect]
[J26] Feng Xi, Yijian Xiang, Shengyao Chen, and Arye Nehorai, "Gridless parameter estimation for one-bit MIMO radar with time-varying thresholds," IEEE Trans. on Signal Processing, vol. 68, no. 1, pp. 1048-1063, 2020. [PDF][Summary][IEEE Xplore]
[J25] Shengyao Chen, Zhiyong Cheng, Chao Liu, Feng Xi, "A blind stopping condition for orthogonal matching pursuit with applications to compressive sensing radar," Signal Processing, vol. 165, pp.331-342, Dec. 2019.[ScienceDirect]
[J24] Lei Lei, Feng Xi, Shengyao Chen, "Finger-Vein Image Enhancement Based on Pulse Coupled Neural Network," IEEE Access, vol.7, pp. 57226 - 57237, May 2019. [IEEE Xplore]
[J23] Huizhang Yang, Chengzhi Chen, Shengyao Chen, Feng Xi, "Sub-Nyquist SAR via quadrature compressive sampling with independent measurements," Remote Sensing, vol. 11, no. 4, February 2019. [PDF][Remote Sensing]
[J22] Chao Liu, Shengyao Chen, Feng Xi, Zhong Liu, "Block sparse representation and suppression of narrow-band interference signals for quadrature compressive sampling radar,'' Signal Processing, vol.150, pp.135-144, September 2018. [PDF] [ScienceDirect]
[J21] Shengyao Chen, Feng Xi, "Cramer-Rao bounds for the joint delay-Doppler estimation of compressive sampling pulse-Doppler radar,'' Journal of Systems Engineering and Electronics, vol.29, pp.58-66, February 2018. [PDF] [IEEE Xplore]
[J20] Shengyao Chen, Feng Xi, Zhong Liu, "A general and yet efficient scheme for sub-Nyquist radar processing,'' Signal Processing, vol.142, pp.206-211, January 2018. [PDF] [ScienceDirect]
[J19] Shengyao Chen, Feng Xi, "Quadrature compressive sampling for multiband radar echo signals,'' IEEE Access, vol.5, pp.19742-19760, September 2017. [IEEE Xplore]
[J18] Shengyao Chen, Feng Xi, Zhong Liu, "A general sequential delay-Doppler estimation scheme for sub-Nyquist pulse-Doppler radar,'' Signal Processing, vol.135, pp.210-217, June 2017. [PDF] [ScienceDirect]
[J17] Feng Xi, Shengyao Chen, Yimin D. Zhang, Zhong Liu, "Gridless quadrature compressive sampling with interpolated array technique,'' Signal Processing, vol.133, pp.1-12, April 2017. [PDF] [ScienceDirect]
[J16] Chao Liu, Shengyao Chen, Feng Xi, "Anti-jamming pulse diversity radar with quadrature compressive sampling (in Chinese),'' Scientia Sinica Informationis, vol.47, pp.99-113, January 2017.
[J15] Suling Zhang, Feng Xi, Shengyao Chen, Yimin D. Zhang, Zhong Liu, "Segment-sliding reconstruction of pulsed radar echoes with sub-Nyquist sampling,'' Science China Information Sciences, vol.59, 122309, December 2016.
[J14] Suling Zhang, Feng Xi, Shengyao Chen, Zhong Liu, "A real-time reconstruction scheme of pulsed radar echoes with quadrature compressive sampling (in Chinese),'' Journal of Electronics and Information Technology, vol.38, pp.1064-1071, May 2016.
[J13] Shengyao Chen, Feng Xi, Zhong Liu, "Time delay estimation of off-grid targets for quadrature compressive sampling radar (in Chinese),'' Acta Electronica Sinica, vol.43, 2352-2359, December 2015.
[J12] Li Sun, Hong Hong, Yusheng Li, Chen Gu, Feng Xi, Changzhi Li, Xiaohua Zhu, "Noncontact vital sign detection based on stepwise atomic norm minimization,'' IEEE Signal Processing Letters, vol.22, pp.2479-2483, December 2015.
[J11] Heng Zhao, Hong Hong, Li Sun, Feng Xi, Changzhi Li, Xiaohua Zhu, "Accurate DC offset calibration of Doppler radar via non-convex optimisation,'' Electronics Letters, vol.51, pp.1282-1284, August 2015.
[J10] Li Sun, Yusheng Li, Hong Hong, Feng Xi, Weidong Cai, Xiaohua Zhu, "Super-resolution spectral estimation in short-time non-contact vital sign measurement,'' Review of Scientific Instruments, vol.86, 044708, April 2015.
[J09] Chao Liu, Feng Xi, Shengyao Chen, Yimin D Zhang, Zhong Liu, "Pulse-doppler signal processing with quadrature compressive sampling,'' IEEE Transactions on Aerospace and Electronic Systems, vol.51, 1217-1230, April 2015.
[J08] Feng Xi, Shengyao Chen, Zhong Liu, "Quadrature compressive sampling for radar signals,'' IEEE Transactions on Signal Processing, vol.62, 2787 - 2802, June 2014.
[J07] Feng Xi, Shengyao Chen, Zhong Liu, "Chaotic analog-to-information conversion: principle and reconstructability with parameter identifiability,'' International Journal of Bifurcation and Chaos, vol.23, 1350198, December 2013.
[J06] Shengyao Chen, Feng Xi, Zhong Liu, "Chaotic analogue-to-information conversion with chaotic state modulation,'' IET Signal Processing, vol.8, 373-380, October 2013.
[J05] Shengyao Chen, Feng Xi, Zhong Liu, "Supreme local Lyapunov exponents and chaotic impulsive synchronizationn,'' International Journal of Bifurcation and Chaos, vol.23, 1350169, October 2013.
[J04] Feng Xi, Shengyao Chen, Zhong Liu, "Chaotic analog-to-information conversion: Sparse signal reconstruction with multiple shooting method (in Chinese),'' Journal of Electronics and Information Technology, vol.35, 608-613, March 2013.
[J03] Shengyao Chen, Feng Xi, Zhong Liu, "Comment on``Modified impulsive synchronization of hyperchaotic systems'','' Communications in Nonlinear Science and Numerical Simulations, vol.18, 219-219, January 2013.
[J02] Zhong Liu, Shengyao Chen, Feng Xi, "A compressed sensing framework of frequency-sparse signals through chaotic system,'' International Journal of Bifurcation and Chaos, vol.22, 1250151, June 2012.
[J01] Feng Xi, Jin He, Zhong Liu, "Adaptive fast consensus algorithm for distributed sensor fusion,'' Signal Processing, vol.90, 1693-1699, May 2010.
Conference Publications:
[C10] Wei Wu, Feng Xi, "Target Localization for FDA-MIMO Radar with Random Frequency Increment via Atomic Norm Minimization," 2019 IEEE MTT-S International Microwave Biomedical Conference (IMBioC) , Nanjing, China, May 2019.
[C09] Huizhang Yang, Shengyao Chen, Feng Xi, Zhong Liu, "Quadrature compressive sampling SAR imaging," 2018 International Geoscience and Remote Sensing Symposium - IGARSS 2018, Valencia, Spain, July 2018. [PDF]
[C08] Feng Xi, Shengyao Chen, "Super-resolution pulse-Doppler radar sensing via one-bit sampling,'' The Tenth IEEE Sensor Array and Multichannel Signal Processing Workshop - SAM 2018, Sheffield, UK, July 2018. [PDF]
[C07] Feng Xi, Shengyao Chen, Zhong Liu, "Super-resolution delay-Doppler estimation for sub-Nyquist radar via atomic norm minimization,'' IEEE 2017 International Conference on Acoustics, Speech, and Signal Processing - ICASSP 2017, New Orleans, Louisiana, March 2017. [PDF]
[C06] Suling Zhang, Feng Xi, Shengyao Chen, Yimin D Zhang, Zhong Liu, "A segment-sliding reconstruction scheme for pulsed radar echoes with sub-Nyquist sampling,'' IEEE 2016 International Conference on Acoustics, Speech, and Signal Processing - ICASSP 2016, Shanghai, China, March 2016. [PDF]
[C05] Chao Liu, Feng Xi, Shengyao Chen, Zhong Liu, "Anti-jamming target detection of pulsed-type radars in QuadCS domain,'' IEEE 2015 International Conference on Digital Signal Processing - DSP 2015, Singapore, July 2015. [PDF]
[C04] Shengyao Chen, Feng Xi, Zhong Liu, Bocheng Bao, "Quadrature compressive sampling of multiband radar signals at sub-Landau rate,'' IEEE 2015 International Conference on Digital Signal Processing - DSP 2015, Singapore, July 2015.
[C03] Chao Liu, Feng Xi, Shengyao Chen, Zhong Liu, "A pulse-Doppler processing scheme for quadrature compressive sampling radar,'' IEEE 2014 International Conference on Digital Signal Processing - DSP 2014, Hong Kong, China, August 2014.
[C02] Feng Xi, Shengyao Chen, Zhong Liu, "Quadrature compressive sampling for radar signals: output noise and robust reconstruction,'' IEEE 2014 China Summit & International Conference on Signal and Information Processing - ChinaSIP 2014, Xi'an, China, July 2014. [PDF]
[C01] Feng Xi, Shengyao Chen, Zhong Liu, "Quadrature compressive sampling for radar echo signals,'' IEEE 2014 International Conference on Wireless Communications and Signal Processing - WCSP 2014, Nanjing, China, November 2011.
Research Grants
1. Co-PI, National Natural Science Foundation of China (NSFC) , Grant No.61671245, 2017–2020.
2. PI, National Natural Science Foundation of China (NSFC) , Grant No.61571228, 2016–2019.
3. Co-PI, National Natural Science Foundation of China (NSFC), Grant No.61171166, 2012–2015.
4. PI, National Natural Science Foundation of China (NSFC) , Grant No.61101193, 2012–2014.
5. Co-PI, National Natural Science Foundation of China (NSFC) , Grant No.60971090, 2010–2012.