Researcher

Wireless Communications Team

Digital Technology Group (DTG)

Computer Laboratory

University of Cambridge

E-mail: wc253@cam.ac.uk
Web: http://dtg-wireless.cl.cam.ac.uk/wct_member_wc253.html
Work: +44-1223-767025

Available in PDF format

Research Summary

• Compressive sensing theory and related applications in wireless sensor networks and image processing;
• Pattern recognition / machine learning algorithms related to emerging trends in textual content, user clustering and pattern matching;
• PHY layer signal processing, algorithm design and optimization for wireless systems.

Education

• University of Cambridge, UK.
  PhD in Computer Science, 2009 - 2012.
  Thesis title: Compressive Sensing for Wireless Sensor Networks
  Supervisor: Ian J. Wassell

• Beijing University of Posts and Telecommunicationsniversity, Beijing, China.
  M.Eng. in Electric Engineering, 2006 - 2009.
  Thesis title: Research on Relay Techniques in The Next Generation Communication System (Best Master's Thesis Award of the University)
  Advisor: Guangxin Yue

• Beijing University of Posts and Telecommunicationsniversity, Beijing, China.
  B.Eng. in Electric Engineering, 2002 - 2006.

Research Experience

• Researcher in Computer Laboratory, University of Cambridge, UK   Sept. 2012 - Mar. 2013
  Work: Research on optimized projection matrix designs for compressive sensing classification, distributed compressive sensing for the maximized lifetime of wireless sensor networks, and wideband spectrum sensing with compressive sensing.

• PhD study in Computer Laboratory, University of Cambridge, UK   Oct. 2009 - Sept. 2012
  Supervisor: Dr. Ian J. Wassell (Senior Lecture)
  Work(major): Research on non-iterative optimized projection designs for compressive sensing, distributed compressive sensing for wireless sensor networks, and blind compressive sensing for data acquisition in wireless sensor networks.
  Work(minor): Pattern recognition / machine learning algorithms related to emerging trends in textual content, user clustering and pattern matching.

• Visiting student, University of Porto, Portugal     Nov. 2010 - Dec. 2010 & Apr. 2011 - Jul. 2011
  Host professor: Prof. Miguel Rodrigues
  Work: Research on compressive sensing matrix designs.

• Full time intern in Intel China Research Center (ICRC), Beijing, China   May 2007 - Nov. 2008
  Supervisor: Dr. Hongming Zheng (Research Manager)
  Work: Research on relay-assistant communication systems, and worked on Link & system level design and simulation for 802.16m (mobile WiMAX) standardization.

• M.Eng. study in Beijing University of Post and Telecommunications, Beijing, China   Sep. 2006 - Jul. 2009
  Supervisor: Prof. Guangxin Yue
  Work: Research on PHY layer signal processing, algorithm design and optimization for wireless systems.

Teaching Experience

• Demonstrator, University of Cambridge, Computer Laboratory   Oct 2009 - Apr 2010
  Course: Digital Electronics (Dr. Ian J. Wassell)
  Work: Demonstrated at the Hardware Practical Classes associated with the lecture course - Digital Electronics.
• Teaching Assistant, Beijing University of Posts and Telecommunications    Sep 2008 - Jan 2009
  Course: Telecommunication Systems (Prof. Laurie Cuthbert)
  Work: Graded class assignments and the final project.

Honors and Awards

• Henry Lester Trust Scholarship, 2012
• Cambridge Trust Travel Grant, 2011&2012
• Cambridge Philosophical Society Travel Grant, 2011&2012
• Best Master's Thesis Award of Beijing University of Posts and Telecommunications, 2010
• Outstanding Graduate Student of Beijing University of Posts and Telecommunications, 2008
• Honorable Mention Recipient of Interdisciplinary Contest in Modeling, 2005
• "Scholarship for Creativity" of Beijing University of Posts and Telecommunications, 2005

Memberships in Professional and Honorary Societies

• Fellow, Cambridge Philosophical Society
• Junior Member, Newton Institute for Mathematical Sciences
• Student Member, Institute of Electrical and Electronics Engineers (IEEE)

Publications

Journal Articles:

 4. W. Chen, M. Rodrigues and I. Wassell, "Projections Design For Statistical Compressive Sensing: A Tight Frame Based Approach," IEEE Transactions on Signal Processing, accepted.
 3. W. Chen, M. Rodrigues and I. Wassell, "A Fr{\'e}chet Mean Approach for Compressive Sensing Date Acquisition and Reconstruction in Wireless Sensor Networks," IEEE Transactions on Wireless Communications, vol. 11, no. 10, pp. 3598 -3606, October 2012.
 2. W. Chen, M. Rodrigues and I. Wassell, "On the Use of Unit-Norm Tight Frames to Improve the Average MSE Performance in Compressive Sensing Applications," IEEE Signal Processing Letters, vol. 19, pp. 8-11, January 2012.
 1. W. Chen and I. Wassell, "Energy Efficient Signal Acquisition in Wireless Sensor Networks: A Compressive Sensing Framework," IET Wireless Sensor Systems, vol. 2, no. 1, pp. 1-8, March 2012.

Conference Proceedings:

 9. W. Chen, M. Rodrigues and I. Wassell, "On the Benefit of using Tight Frames for Robust Data Transmission and Compressive Data Gathering in Wireless Sensor Networks," in IEEE International Conference on Communications (ICC 2012), Ottawa, Canada, Jun 2012.
 8. W. Chen, M. Rodrigues and I. Wassell, "Optimized Projections for Sensing Sparse Signals in Overcomplete Dictionaries," in The 37th IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Kyoto, Japan, March 2012.
 7. W. Chen, M. Rodrigues and I. Wassell, "Distributed Compressive Sensing Reconstruction via Common Support Discovery," in IEEE International Conference on Communications (ICC 2011), Kyoto, Japan, Jun 2011.
 6. W. Chen, M. Rodrigues and I. Wassell, "Penalized L1 Minimization for Reconstruction of Time-varying Sparse Signals," in The 36th IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Prague, Czech Republic, May 2011.
 5. W. Chen and I. Wassell, "Energy Efficient Signal Acquisition via Compressive Sensing in Wireless Sensor Networks," in IEEE International Symposium on Wireless and Pervasive Computing (ISWPC 2011), Hong Kong, China, Feb 2011.
 4. W. Chen, T. Luo, F. Sun, D. Liu and G. Yue, ``Spatial Multiplexing and Scheduling in Cellular Networks with Relay Stations," in IEEE Vehicular Technology Conference (VTC) 2009-Fall.
 3. W. Chen, T. Luo, Z. Wang, G. Yue and H. Zheng, ``Performance Analysis of Different MIMO Transmission Modes with Link Adaptation," in IEEE Radio and Wireless Symposium (RWS) 2009.
 2. W. Chen, H. Zheng, Y. Li, S. Zhang and X. Wu, ``Beamforming Methods for Multiuser Relay Networks," in IEEE Vehicular Technology Conference (VTC) 2008-Fall.
 1. S. Zhang, Y. Li, W. Chen and X. Wu, ``Downlink Channel Estimation Model for 802.16e OFDMA System," in IEEE Vehicular Technology Conference (VTC) 2008-Fall.

Talks

• ``Optimized compressive sensing matrix designs" Coventry, Southampton and Cambridge WSN Research Exchange Day (University of Coventry, Sept. 2012)
• ``Compressive Sensing Matrix Design for Applications in Wireless Sensor Networks" ICC(Ottawa, Jun. 2012)
• ``Compressive Sensing Date Acquisition and Reconstruction in Wireless Sensor Networks" Joint Cambridge Wireless Academic & Industry and Radio Technology SIGs and ICT KTN Event(Univ. of Cambridge, Jan. 2012)
• ``Energy-efficient Signal Acquisition in Wireless Sensor Networks - A Compressive Sensing Framework" Southampton, Coventry and Cambridge WSN Research Exchange Day (University of Southampton, Sept. 2011)
• ``Penalized L1 Minimization for Reconstruction of Time-varying Sparse Signals" ICASSP (Prague, May 2011)
• ``Energy Efficient Signal Acquisition via Compressive Sensing in Wireless Sensor Networks" ISWPC (Hong Kong, Feb 2011)
• ``Compressive Sensing for a Sequence of Correlated Signals: Theory, Algorithms and Applications to WSNs" Univ. of Porto (Dec. 2010)
• ``Data Acquisition via Compressive Sensing in Wireless Sensor Networks" Digital Technology Group Meeting (Univ. of Cambridge, Jun. 2010)
• ``Introduction to Compressive Sensing: From Theory to Applications" Digital Technology Group Meeting (Univ. of Cambridge, Mar. 2010)

Service

Reviews

• IEEE Transactions on Signal Processing
• IEEE Transactions on Image Processing
• IEEE Transactions on Industrial Informatics
• IEEE Communications Letters
• IEEE Wireless Communications Letters
• EURASIP Journal on Advances in Signal Processing
• Wiley Wireless Communications and Mobile Computing
• European Transactions on Telecommunications
• IEEE Information Theory Workshop (ITW) 2011
• IEEE Wireless Communications and Networking Conference (WCNC) 2009 2012

Committees

• TPC, The 2nd International Conference on Internet (ICONI 2010) & The 5th Asia Pacific International Conference on Information Science (APIC-IST 2010), Crimson Resort Mactan, Philippines