Dr. Y. Thomas Hou
Bradley Distinguished Professor of ECE
IEEE Fellow

Dr. Wenjing Lou
IEEE Fellow


The Complex Networks and Security Research (CNSR) Lab at Virginia Tech was founded in 2011 by Professors Tom Hou and Wenjing Lou. The mission of the CNSR@VT lab is to conduct basic and applied research in a broad range of topics in networking, wireless, and cyber security. We explore novel concepts and ideas related to protocols and systems of the future pervasive cyber infrastructure, and design scalable architecture and trustworthy protocols for next-generation networks.

Current Research Interests

There are two main research thrusts at CNSR@VT:

Wireless Networks Research

  • Mathematical Modeling and Theoretical Foundation: Interference cancellation modeling and analysis, MIMO ad hoc networks, cognitive radio ad hoc networks, wireless energy transfer
  • Network Optimization: Large-scale, discrete and continuous non-convex optimization problems that arise from cross-layer optimizations involving advanced physical layer technologies
  • Algorithm and Protocol Design: Provably optimal and near-optimal algorithms, distributed algorithms and light weight protocols for wireless networks (e.g., ad hoc and sensor networks, multi-hop cooperative communications, opportunistic routing, network coding)

Cyber Security Research

  • Wireless Security: security and privacy in wireless networks and mobile computing, confidentiality and authentication, anonymization and information privacy, cognitive radio networks security, cross-layer methods for security enhancement, location privacy
  • Information Security in Cloud Computing: outsourced data privacy, auditing, search over encrypted data, computation outsourcing privacy
  • Security and Privacy in Cyber-physical Systems: e-healthcare systems and smart grid


  • July 2015: Former CNSR research scientist, Dr. Shiwen Mao, has been appointed as the Director of the Wireless Engineering Research and Education Center at Auburn University. He has also been named as the Samuel Ginn Endowed Professor in conjunction with the appointment (news release).
  • May 2015: Prof. Lou received Virginia Tech College of Engineering Dean's Award for Research Excellence, in recognition of her extraordinary performance in research (CoE news release, and CS news).
  • Jan. 2015: Prof. Tom Hou has been named an IEEE Communications Society Distinguished Lecturer (DL) for 2015-2016. As a DL, Tom will present invited lectures on his research to some local chapters of the society.
  • Dec 2014: Prof. Hou was the Keynote Speaker at the 10th IEEE International Conference on Mobile Ad-hoc and Sensor Networks (MSN) in Maui, Hawaii, USA. His keynote talk was titled "Advances in Ad Hoc and Sensor Networks for Cyber Physical Systems." (conference web page)
  • Nov. 2014: Prof. Wenjing Lou has been named an IEEE Fellow for contributions to information and network security. IEEE Fellow is the highest grade of membership and is recognized by the technical community as a prestigious honor and an important career achievement (CoE news, CS news).
  • More News