• 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

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.