Xu Chen obtained his Ph.D. degree from Northwestern University. He received his B.E. degree in Electronics Engineering from Zhongshan (Sun Yat-sen) University in 2007 and his M.S. degree in Electrical and Computer Engineering from Purdue University, West Lafayette in 2009. From 2009 to 2011, he was a research associate in the Hong Kong Polytechnic University, working in the project of cooperative communication and the application of LDPC decoding in 100 Gb/s optical communications. He was a research intern at Nokia Research Center, Berkeley from June to September in 2012. He was a visiting student at Massachusetts Institute of Technology (MIT) from February to March in 2015.
Xu Chen received the best paper award in WCNC 2017, the outstanding paper award in International Conference on Advanced Communication Technology (ICACT) 2013, and the best paper award in International Conference on Advanced Technologies for Communications 2011. He is also the recipient of the Walter P. Murphy Fellowship for 2011-2012. His research interests include information theory, coding theory and compressed sensing. His current focus is on Internet of Things (IoT), building the mathematical model, studying the fundametal limit and designing practical algorithms.
Xu Chen is currently a senior engineer at Apple. Prior to that, he was the Co-Founder of Calterah, a startup building the CMOS milemeter-wave radar chip. The startup has raised the Series A funding from a top tier venture capital. His responsibility was to design and implement the MIMO radar algorithms for localization, radar imaging and pattern recognition.
- Pattern recoginition for radar
- Many user information theory
- Compressive sensing
- Low-complexity neighbor discovery for Internet of Things (IoT)
- Public safety network
- Design and implementation of high-throughput LDPC decoder
- Opportunistic relaying in cooperative communication
Xu Chen and Dongning Guo, "A Novel Architecture for Public Safety Network", accepted to Public Safety Networks Series, Wiley-ISTE Press.
Xu Chen, Dongning Guo and Gregory Wornell, "Sparse OFDM: a Compressive Sensing Approach to Asynchronous Neighbor Discovery," preprint.
Xu Chen, Xu Li, Dongning Guo and John Grosspietsch, "Resource Allocation in the Public Safety Broadband Network with Rapid-Deployment Base Stations," preprint.
Xu Chen, Tsung-Yi Chen and Dongning Guo, "Capacity of Gaussian Many-Access Channel," accepted to IEEE Transactions on Information Theory.
Xu Chen, Yue Zhao, C. W. Sham, W. M Tam, and Francis Lau, "A 2.0 Gb/s High Throughput Decoder for Protograph-based LDPC Covolutional Codes", IEEE Transactions on Circuits and Systems I: Regular Papers, vol.60, no.7, pp.1857,1869, July 2013.
Xu Chen, Qing F. Zhou, Ting-wai Siu, and Francis Lau, "Asymptotic Analysis of Opportunistic Relaying based on the Max-Generalized-Mean Selection criterion", IEEE Trans. Wireless Commun., vol. 10, no. 4, pp 1050 - 1057, April 2011.
Xu Chen, Ting-wai Siu, Qing F. Zhou and Francis Lau, "High-SNR Analysis of Opportunistic Relaying based on the Maximum Harmonic Mean Selection Criterion", IEEE Signal Processing Letter, vol.17, no.8, pp.719-722, Aug. 2010
Zhiyi Zhou, Xu Chen, Dongning Guo and Michael Honig, "Sparse Massive MIMO Channel Estimation with 1-Bit Feedback per Dimension," WCNC, 2017.
Xu Chen and Dongning Guo, "A Generalized LDPC Framework for Sublinear Compressive Sensing", submitted to International Conference on Acoustics, Speech and Signal Processing (ICASSP) 2016.
Xu Chen and Dongning Guo, "Robust Sublinear Complexity Walsh-Hadamard Transform with Arbitrary Sparse Support", in Proc. IEEE Int. Symp. Inf. Theory (ISIT), Hong Kong, 2015.
Xu Chen and Dongning Guo, "Gaussian Many-Access Channels with Random Transmitter Activities", in Proc. IEEE Int. Symp. Inf. Theory (ISIT), Honolulu, HI, 2014
Tsung-yi Chen, Xu Chen and Dongning Guo, "Many-Broadcast Channels: Definition and Capacity for the Degraded Case", in Proc. IEEE Int. Symp. Inf. Theory (ISIT), Honolulu, HI, 2014.
Xu Chen and Dongning Guo, "Gaussian Many-Access Channels: Definition and Symmetric Capacity", in Proc. Information Theory Workshop (ITW), Seville, Spain, 2013.
Xu Chen, Dongning Guo, and John Grosspietsch, "Public Safety Wireless Networks: A Novel Architecture with Stationary and Mobile Base Stations", in Proc. IEEE International Conference on Communications (ICC), Budapest, Hungary, 2013.
Yue Zhao, Xu Chen, Chiu Wing Sham, Wai M. Tam and Francis C.M. Lau, "Efficient Decoding of QC-LDPC Codes Using GPUs", 11th International Conference on Algorithms and Architectures for Parallel Processing (ICA3PP 2011).
- C. W. Sham, Xu Chen, W. M. Tam, Yue Zhao, Francis Lau and Fan Yu, Efficient RAM-Based Pipelined Decoder Architecture for Quasi-Cyclic Low-Density Parity-Check Codes, International patent filed, International Application No. PCT/CN2011/077678, Filing Date: 27.07.2011, Publication No.: WO2012106937 A1, Publication Date 16.08.2012.
- Xu Chen, C. W. Sham, W. M. Tam, Yue Zhao, and Francis Lau, A 2.0 Gb/s High Throughput Decoder for Protograph-based LDPC Covolutional Codes, US patent filed, US Patent No.: 8671323 B2, Filing Date: 10.02.2012, Publication Date: 11.03.2014.
@ Purdue University
Digital Communication, Digital Signal Processing, Random Variables and Stochastic Process, Wireless Communication Network, Detection and Estimation Theory, Real Analysis, Measure Theory, Convex Optimization and Large Deviation, Algorithm Analysis
@ Northwestern University
Computer Vision, Machine Learning, Algorithm Mechanism Design, Adaptive Filters, Large Scale Optimization, Advanced Queueing Theory, Information Theory, Stochastic Model, Probability Theory, Complex Analysis