Ph.D., Electronic Engineering, July. 2007Tsinghua University, Beijing, China

Bachelor of Engineering, Industrial Engineering, June 2002Tsinghua University, Beijing, China

07/2007-present Assistant Professor, Dept. of Electronic Engineering, Tsinghua Univ.

05/2005-03/2007 Research Assistant, Dept. of Electronic and Computer Engineering, The Hong Kong of Science and Technology

UndergraduatePrinciples of Modern Communications (2008~2010)

Introductory Principles of Communications (2009~2010)

GraduateAdvanced Digital Communications (2009~2010)

CONFERENCEIEEE VTC-S 2011, TPC Co-chair

IEEE ICC 2010, Wireless Communications Symposium, TPC Co-chair

IEEE ICC 2008, Student Travel Grant chair

IEEE ICC 2008, COCONET Co-chair

IEEE ICC, Globecom, WCNC, PIMRC, VTC, TPC Member

ACADEMIC ORGANIZATIONMember, IEEE

Reviewer, IEEE Communications/VT Magazine, IEEE/ACM Transactions on Networking, IEEE Journal on Selection Areas in Communications/ Signal Processing, IEEE Trans. on Wireless Comm./ Vehicular Technologies/ Multimedia, IEEE Communications Letters, Wireless Communications and Mobile Computing, EURASIP Journal on Wireless Communications and Networking, Performance Evaluation

Editor, Communications and Networks (Scientific Research Publishing)

Wireless Communications and Networking

Information Theory

Cognitive and Cooperative Communications

Modeling and Optimizations of Stochastic Systems

1. National Science Funding, China, “Transmission and Fusion of Sensing Information in Cognitive Wireless Access Networks”, Jan. 2010-Dec. 2012, Principle Investigator.

We exploit the scientific issues in future cognitive wireless access networks that share spectrums of primary systems. Quickest spectrum sensing and sensing information transmission protocols were developed.

2. Young Faculty Research Funding, Ministry of Education, “Fundamental Theory of Integrated Broadband Communication and Broadcasting Networks”, Jan. 2009 – Dec. 2010, Principle Investigator.

We exploit the scientific issues in Integrated Broadband Communication and Broadcasting Networks that can significantly enhance the spectrum efficiency. Information theoretic capacity analysis was carried out. Capacity achievable codes for Integrated Broadband Communication and Broadcasting Networks was also developed.

3. Huawei University Funding, “Key Technology in Cognitive Radio based Spectrum Sharing Systems”, Dec 2009 – Dec 2011, Principle Investigator.

The project developed spectrum sensing algorithms and protocols for practical spectrum sharing systems. Sensing results based primary user localization techniques was developed. Based on the PU localization, Radio Environment Map was further constructed.

4. National Science Funding, China, “Cognitive Radio based Cooperative and Relaying Communications”, Jan. 2009-Dec. 2012, Secretary.

We exploit the scientific issues in cognitive radio based cooperative and relaying communications which can efficiently utilize the 3-D spectrum holes. Based on accurate cooperative sensing and localization techniques, efficient relaying protocols were proposed for cognitive radio networks.

IEEE Marconi Prize Paper Award, 2009

IEEE IWCLD Best Paper Award, 2007

IEEE ICC Best Paper Award, 2006

[1] Chen W, Dai L, Letaief K B, Cao Z. A unified cross-layer framework for resource allocation in cooperative networks. IEEE Trans. on Wireless Communications 2008.8: 1699-1707. (Marconi Prize Paper Award)

[2] Chen W, Letaief K B, Cao Z. Network Interference Cancellation, IEEE Trans. on Wireless Communications, 2009.12: 5982 - 5999.

[3] Chen W, Letaief K B, Cao Z. A cross-layer method for interference cancellation and network coding in wireless networks. Proceedings of IEEE ICC 2006: 3693-3698. (Best Paper Award)

[4] Chen W, Cao Z, Letaief K B. Optimal delay-power tradeoff in wireless transmission with fixed modulation. Proceedings of International Workshop on Cross Layer Design. 2007: 60 – 64. (Best Paper Award)

[5] Bai B, Chen W, Letaief K B, Cao Z. RBG Matching: An Innovative Combinatorial Approach for OFDMA Resource Allocation, Proceedings of IWCMC, 2010. (Invited Paper)

[6] Dai L, Chen W, Cimini L J, Letaief K B. Fairness Improves Throughput in Energy-constrained Cooperative Ad-hoc Networks, IEEE Trans. on Wireless Communications, 2009.7: 3679-3691.

[7] Bai B, Chen W, Cao Z, Letaief K B. Max-Matching Diversity in OFDMA Systems, IEEE Trans. on Communications, 2009.4: 1161-1171.

[8] Ma Z, Chen W, Letaief K B, Cao Z. A Semi Range-Based Iterative Localization Algorithm for Cognitive Radio Networks, IEEE Trans. on Vehicular Technology, 2010.2: 704 – 717.

[9] Xu Y, Chen W, Cao Z. Optimal power allocation for spectrum sharing in frequency-selective unlicensed bands. IEEE Communication Letter, 2008.7: 511-513.

[10] Bo B, Chen W, Cao Z. Low-Complexity Hierarchical Spectrum Sharing Scheme in Cognitive Radio Networks. IEEE Communication Letter, 2009.10: 770 - 772.