Selected publications:

Current research areas:

• Wireless mesh networks
• Wireless sensor networks
• Wireless local area networks
• Content distribution, multimedia networking
• Traffic Engineering and Quality of Service
• Optical Networks
  

Past research areas:

• Closed-loop identification
• Non-linear identification
• Subspace methods
  
• Other system identification methods, algorithms and theory
  
• Distillation column identification and control
  
• Applications (Induction machine, vehicle dynamics,vibration control)

---

Wireless mesh networks

• C.T. Chou, A. Misra and J. Qadir, Low latency broadcast in multi-rate wireless mesh networks. Accepted by IEEE Journal on Selected Areas in Communications (Special Issue on Multi-hop Wireless Mesh Networks) (Accepted March 2006)
• J. Qadir, A. Misra and C.T. Chou Minimum Latency Broadcasting in Multi-Radio Multi-Channel Multi-Rate  Wireless Meshes. To appear in the 3rd Annual IEEE Communications Society Conference on Sensor, Mesh and Ad Hoc Communications and Networks (SECON), 2006. (10 pages, 26% acceptance rate)
• X. Zhou, J. Guo, C.T. Chou and S. Jha, Protecting Multicast Sessions in Wireless Mesh Networks, To appear in Proc. of the 31st IEEE Conference on Local Computer Networks (LCN), 2006. (8 pages, 34% acceptance rate for full papers)
• J. Qadir, C.T. Chou and A. Misra. Exploiting Rate Diversity for Broadcasting in Wireless Mesh Networks. To appear in Proc. of the 31st IEEE Conference on Local Computer Networks (LCN), 2006. (8 pages, 34% acceptance rate for full papers)
• C.T. Chou and A. Misra, Low latency multimedia broadcast in multi-rate wireless meshes, In Proc. of the 1st IEEE Workshop on Wireless Mesh Networks, pp. 54-63, 2005. (Held in conjunction with the 2nd Annual IEEE Communications Society Conference on Sensor, Mesh and Ad Hoc Communications and Networks (SECON)) (10 pages, Invited paper)
• X. Zhao, C.T. Chou, J. Guo and S. Jha, Resilient multicasting in wireless mesh networks. Accepted by International Conference on Telecommunications. (4 pages)

Wireless sensor networks

• W. Hu, C.T. Chou, S. Jha and N. Bulusu, Deploying long-lived and cost-effective hybrid wireless sensor networks. Accepted by Ad Hoc Networks. (Accepted Sept 2005)
• W. Hu, V.N. Tran, N. Bulusu, C.T. Chou, S. Jha, A. Taylor, The design and evaluation of a hybrid sensor networks for cane-toad monitoring. In Proc. of the 4th International Conference on Information Processing in Sensor Networks 2005. (25% acceptance rate for full papers)
• B. H. Liu, B. Otis, S. Chahha, P. Axon, C.T. Chou and S. Jha, On the Fading and Shadowing Effects for Wireless Sensor Networks, To appear in the 3rd IEEE International Conference on Mobile Ad-Hoc and Sensor Systems (MASS), 2006. (10 pages, acceptance rate 25% for full papers)
• B.H. Liu, Y. Gao, C.T. Chou and S. Jha, An energy efficient select optimal neighbour protocol for wireless ad hoc neworks, In Proc 4th International IEEE Workshop on Wireless Local Networks (WLN), pp. 626-633, 2004.
• B.H. Lui, C.T. Chou, J. Lipman, S. Jha, Using Frequency Division to Reduce MAI in DS-CDMA Wireless Sensor Networks. In Proc. Of the IEEE Wireless Communications & Networking Conference, pp. 756-663, 2005. (8 pages)
  
• W. Hu, C.T. Chou, S. Jha and N. Bulusu, Deploying long-lived and cost-effective hybrid sensor networks, In Proc. the First Workshop on Broadband Advanced Sensor Networks 2004.

Content distribution, multimedia networking

• J. Yu, C.T. Chou, Z. Yang, X. Du and T. Wang, A dynamic caching algorithm based on internal popularity distribution of streaming media. Accepted by ACM Multimedia System Journal (Accepted Jun 06).
• T.V. Nguyen, F. Safaei, P. Boustead and C.T, Chou, Provisioning overlay distribution networks. Computer Networks (Special Issue on Networking Issues in Entertainment Computing), 49, pp. 103-118, 2005.
• J. Yu, C.T. Chou, Z. Yang, X. Du, T. Wang, Internal popularity of streaming video and its implication on caching, In Proc. of  the IEEE 20th International Conference on Advanced Information Networking and Applications, pp. 35-40, 2006. (6 pages, 33% acceptance rate)
• J. He, Z. Yang, D. Yang, Z. Tang, and C.T. Chou, Investigation of JPEG2000 image transmission over next generation wireless networks. In 5th IEEE International Conference on High Speed Networks and Multimedia Communications, pages 71-74, 2002.
• J. He, Z. Yang, D. Yang, Z. Tang, J. Hu and C.T. Chou, Analysis and representation of statistical performance of JPEG2000 encoded image over wireless channels. In 9th International Conference on Electronics, Circuits and Systems, pages 1051-1054, 2002.
• W. Liu, C.T. Chou, Z. Yang and X. Du, Popularity-wise Proxy Caching for Interactive Streaming Media. In Proc. 29th IEEE Conference on Local Computer Networks, pp. 250-257, 2004.
• T.V. Nguyen, C.T. Chou, P. Boustead, Provisioning content distribution networks over shared infrastructure. In Proc. the 11th IEEE International Conference on Networks, pp. 119-124,  2003.
• X. Du, C.T. Chou, Z. Yang, W. Cheng, J. Huang, A self-organizing scheme for cache consistency. In Proc. 10th International Conference on Telecommunications, pages 462-468, 2003.
  
• T.V. Nguyen, C.T. Chou, P. Boustead, Resource optimisation for content distribution networks in shared infrastructure environment. Appeared in the Australian Telecommunications Networks & Applications Conference (ATNAC) 2003.

Wireless local area networks

•  J. He, L. Zheng, Z. Yang, C.T. Chou and Z. Tang, Analytical Model for Service Differentiation Schemes in IEEE 802.11 Wireless LAN. IEICE Transactions on Communications. Vol E87-B, No. 6, pp. 1724-1729, 2004.
• J. He, L. Zheng, Z. Yang and C.T. Chou, Performance analysis and service differentiation for 802.11 Wireless LAN. In Proc. 28th IEEE International Conference on Local Computer Networks, pp. 691-697, 2003.
  
• Irwan, T. Eyers and C.T. Chou. Fast Channel Scanning Scheme For Pico-Cellular Wireless LANs. In Proc. the Australian Telecommunications Networks & Applications Conference (ATNAC) 2004.
• J. He, Z. Tang, Z. Yang, W. Cheng, C.T. Chou, Performance evaluation of distributed access scheme in error-prone channel, In IEEE Region 10 Conference on Computers, Communications, Control and Power Engineering, pp. 1142-1145.
  

Traffic Engineering

• C.T. Chou, Traffic engineering for MPLS-based virtual private networks. Computer Networks, 44, pp.319-333, 2004.
• C.T. Chou. Traffic engineering for MPLS-based virtual private networks. In 11th International Conference on Computer Communications and Networks, pages 110-115, 2002.

Quality of Service

• S. Sohail, S. Jha, S. Kanhere and C.T. Chou, QoS driven parallelization of resources to reduce file download delays. Accepted by IEEE Transactions on Parallel and Distributed Systems (Accepted Sept 2005)
• Z. Yang, C. Le, J. He, C.T. Chou and W. Liu, An enhanced scalable probe based multicast scheme. IEICE Transactions on Communications, Vol E88-B, pp. 3466-3470.
• F. Rosenbaum, C.T. Chou and S. Jha, Dynamic Routing of Restorable QoS Connections in MPLS Networks. In Proc. of the 30th Annual Conference on Local Computer Networks, 2005, pp. 418-426. (9 pages, 27% acceptance rate for full papers)
• S. Sohail, C.T. Chou, S. Kanhere and S. Jha, On Large Scale Deployment of Parallelized File Transfer Protocol. In Proc. the 24th IEEE International Performance Computing and Communications Conference 2005. (32 % acceptance rate)
• J. Brun, F. Safaei and C.T. Chou. Implications of Virtual Links Interdependency in Virtual Networks Admission. In Proc. the Australian Telecommunications Networks & Applications Conference (ATNAC) 2004.
• W. Liu, Z. Yang, J. He, C. Le and C.T. Chou, Analysis and improvement on the robustness of AQM in Diffserv Networks. In Proc. The IEEE International Conference on Communications (ICC), pp. 2297-2302, 2004.
  
• W. Liu, Z. Yang, J. He, C. Le and C.T. Chou, Two Adaptive Algorithms for Quantitative Differentiated Services. In Proc. IEEE Globecom, pp. 1703-1707, 2004.
• B.H. Liu, S. Jha, C.T. Chou, P. Ray, Optimized allocation of distributed application across local area networks. In Proc. the 28th Annual IEEE Conference on Local Computer Networks (LCN), pp.  291-292, 2003.
• B.H. Liu, S. Jha, C.T. Chou, P. Ray, Resource Allocation for Networked Application Using Binary Integer Programming. Accepted by 7th International Symposium On DSP and Communication Systems and 2nd Workshop on The Internet and Telecommunications and Signal Processing, 2003.

Optical Networks

•  C.T. Chou, F. Safaei, P. Boustead, I. Ouveysi, A hybrid optical network architecture consisting of optical cross connects and optical burst switches. Accepted by the 12th International Conference on Computer Communications and Networks, 2003.

  
Closed-loop identification

• C.T. Chou and M. Verhaegen. Subspace algorithms for the identification of multivariable dynamic errors-in-variables models. Automatica, 33(10):1857—1869, 1997.
• C.T. Chou and M. Verhaegen. Closed-loop identification of linear time-invariant systems under linear time-varying feedback. In Preprints of the IFAC Symposium on Dynamics and Control of Process Systems, pages 343--348, 1998.
• C.T. Chou and M. Verhaegen, Closed-loop identification using canonical correlation analysis. In CD-ROM Proceedings of the 5th European Control Conference, 1999. 
  

Non-linear identification

• C.T. Chou and M. Verhaegen. Identification of Wiener models with data pre-filtering. In Proceedings of the 38th IEEE Conference on Decision and Control, pages 603-604,1999. .
• C.T. Chou and M. Verhaegen. Identification of Wiener models with process noise. In Proceedings of the 38th IEEE Conference on Decision and Control, pages 598-603,1999.
  
• C.T. Chou and M. Verhaegen. An indirect approach to closed-loop identification of Wiener models. In Proceeding of the 1999 American Control Conference, pages 3451—3455, 1999.

Subspace methods

• B. Haverkamp, C.T. Chou, and M. Verhaegen. SMI toolbox: A MATLAB toolbox for state space model identification. Journal A, 38(3):34—37,1997.
• C.T. Chou and M.H. Verhaegen. Subspace algorithm for the identification of multivariable dynamic errors-in-variables models. In Proc. 35th Conf. on Decision and Control, pages 3636--3641, 1996.
• B.R.J. Haverkamp, C.T. Chou, M.H. Verhaegen, and R. Johansson. Identification of continuous-time MIMO state space models from sampled data, in the presence of process and measurement noise. In Proc. 35th IEEE Conf. Decision and Control, pages 1539--1544, 1996.
• B.R.J. Haverkamp, M.H. Verhaegen, C.T. Chou, and R. Johansson. Continuous-time subspace model identification method using Laguerre filtering. In Preprints of the 11th IFAC Symposium on System Identification, pages 1143—1148, 1997.
• R. Johansson, M. Verhaegen, and C.T. Chou. Stochastic theory of continuous-time state-space identification. In Proceedings of the 36th IEEE Conference on Decision and Control, pages 1866—1971, 1997.
• U. Forssell and C.T. Chou. Efficiency of prediction error and instrumental variable methods for closed-loop identification. In Proceedings of the 37th IEEE Conference on Decision and Control, pages 1287—1288, 1998.
• B. Haverkamp, C.T. Chou, and M. Verhaegen. Subspace identification of continuous-time Wiener models. In Proceedings of the 37th IEEE Conference on Decision and Control, pages 1846—1847, 1998.
• R. Johansson, M. Verhaegen, C.T. Chou, and A. Robertsson. Behavioural model identification. In Proceedings of the 37th IEEE Conference on Decision Control, pages 126—131, 1998.
• R. Johansson, M. Verhaegen, C.T. Chou, and A. Robertsson. Residual models and stochastic realization in state-space system identification. In Proceedings of the 37th IEEE Conference on Decision and Control, pages 3439—3444, 1998.
• M. Lovera, M. Verhaegen, and C.T. Chou. State space identification of MIMO linear parameter varying models, In Proceedings of Mathematical Theory of Networks and Systems, 1998.
• V. Verdult, M. Verhaegen, and C.T. Chou. Identification of MIMO bilinear state space models using separable least squares. In Proceedings of the 1999 American Control Conference, pages 838—842, 1999.
• V. Verdult, M. Verhaegen, C.T. Chou, and M. Lovera. Efficient and systematic identification of MIMO bilinear state space models. In Proceedings of the 37th IEEE Conference on Decision and Control, pages 1260—1265, 1998.
• V. Verdult, M. Verhaegen, C.T. Chou, and M. Lovera. Efficient subspace-based identification of MIMO bilinear state space models. In Proceeding of the International Workshop on Advanced Black-Box Techniques for Nonlinear Modeling: Theory and Applications, pages 216—221, 1998.
• R. Johansson, M. Verhaegen, B.R.J. Haverkamp, and C.T. Chou. Correlation methods of continuous-time state-space identification. In CD-ROM Proceedings of the 5th European Control Conference, 1999.
• B. Haverkamp, C.T. Chou, and M. Verhaegen. Tuning of the continuous-time Kalman filter from sampled data. In Proceedings of the 1999 American Control Conference, pages 3895—3899, 1999.

Other system identification methods, algorithms and theory

• C.T. Chou and J.M. Maciejowski. System identification using balanced parameterization. IEEE Transactions on Automatic Control, 42(7):956—974, 1997.
• J. Bruls, C.T. Chou, B.R.J. Haverkamp, and M. Verhaegen. Linear and non-linear system identification using separable least-squares. European Journal of Control, 5(1):116—128, 1999.
• C.T. Chou, M. Verhaegen, and R. Johansson. Continuous time identification of SISO systems using Laguerre functions. IEEE Transactions on Signal Processing, 47(2):349—362, 1999.
• R. Johansson, M. Verhaegen, and C.T. Chou. Stochastic theory of continuous-time state-space identification. IEEE Transactions Signal Processing, 47(2):41—51, 1999.
• J. Bruls, C.T. Chou, and M. Verhaegen. Linear and non-linear system identification using separable least-squares. In Preprints of the 11th IFAC Symposium on System Identification, pages 715—729, 1997.
• C.T. Chou and B. Hanzon. Diffeomorphisms between classes of linear systems. Systems and Control Letters, 26(4):289-300, 1995.
  B. Articles in peer-reviewed international conferences
• R. Johansson, M. Verhaegen, C.T. Chou, and A. Robertsson. Residual models and stochastic realization in state-space system identification. International Journal of Control, 74(10):988--995, 2001.
  
• C.T. Chou, M. Verhaegen, and R. Johansson. Continuous time identification of SISO systems using Laguerre functions. In Preprints of the 11th IFAC Symposium on System Identification, pages 1349—1354, 1997.C.T. Chou and B. Hanzon. A continuation method approach to the l2 model reduction problem. In Proc. 3rd European Control Conf., pages 1336--1341, 1995.
• J.M. Maciejowski and C.T. Chou. Applications of estimation using balanced parametrisations. In Proc. 3rd European Control Conference, Rome, pages 1348--1353, 1995.
• C.T. Chou and B. Hanzon. Diffeomorphisms between classes of linear systems. In Proc. European Control Conf., pages 2149--2153, 1993.
• J.M. Maciejowski and C.T. Chou. Identification for control using balanced parametrizations. In Proc. European Control Conference, pages 2149--2153, 1993.
• C.T. Chou, M.H. Verhaegen, and R. Johansson. Identification of continuous time SISO differential equation models - noise-free case. In Proc. 35th Conf. on Decision and Control, pages 1519--1520, 1996.
• H. El Edrissi, M.H. Verhaegen, B.R.J. Haverkamp, and C.T. Chou. Off- and on- line identification of discrete time LTI systems using separable least squares. In Proceedings of the 37th IEEE Conference on Decision and Control, pages 720—724, 1998.
• T.J.J. van den Boom, C.T. Chou, and B. Wams. Adaptive predictive control of unstable linear slowly time-varying systems. In CD-ROM Proceedings of the 5th European Control Conference, 1999.

Distillation column identification and control

• H.H.J. Bloemen, C.T. Chou, T.J.J. van den Boom, V. Verdult, M. Verhaegen, and T.C. Backx. Wiener model identification and predictive control for dual composition control of a distillation column. Journal of Process Control, 11(6):601--620, 2001.
• H.H.J. Bloemen, C.T. Chou, T.J.J. van den Boom, V. Verdult, M. Verhaegen, and T.C. Backx. Wiener MPC for high purity dual composition control of a distillation column. In Process Control and Instrumentation 2000, Glasgow, Scotland, pages 198--203, 26th--28th July 2000.
• C.T. Chou, H.H.J. Bloemen, V. Verdult, T.J.J. van den Boom, T. Backx, and M. Verhaegen. Nonlinear identification of high purity distillation columns. In IFAC SYSID 2000, Symposium on System Identification, Santa Barbara, California, June 2000.

Applications (Induction machine, vehicle dynamics, vibration control)

•  R.F.F. Koning, C.T. Chou, M.H.G. Verhaegen, J.B. Klaassens, and J.R. Uittenbogaart. A novel approach on parameter identification for inverter driven induction machines. IEEE Trans. on Control System Technology, 8(6):873--882, 2000.
• A.R. Savkoor and C.T. Chou. Application of aerodynamic actuators to improve vehicle handling. Vehicle System Dynamics, 32:345-374, 1999.
• M. Abdelghani, C.T. Chou, and M. Verhaegen. Using subspace methods in the identification and modal analysis of structures. In Proceedings of the 15th IMAC, pages 1392—1398, 1997.
• A.R. Savkoor and C.T. Chou. Control of vehicle yaw and roll using aerodynamic devices. In Proceeding of the 4th International Symposium on Advanced Vehicle Control, pages 767—772, 1998.
• A.R. Savkoor and C.T. Chou. Control strategies for improving vehicle ride. In Proceeding of the 4th International Conference on Motion and Vibration Control, pages 857—862, 1998.
• A.R. Savkoor, C.T. Chou, and M. Blokzijl. Control of in-plane vehicle body motions using aerodynamic devices. In Proceeding of Asia-Pacific Vibration Conference, Kyongju, South Korea, pages 742—747, 1997.
• J. Hu, H.R. Wu, C.T. Chou, and M. Verhaegen. Investigation of signal replication techniques for road simulators: a quarter-car case study. . In Proceedings of the 1999 American Control Conference, pages 3178—3179, 1999.
• J. Hu, H.R. Wu, C.T. Chou, M. Verhaegen, D. Westwick, and G. Nijsse. Adaptive real-time control of a christmas tree using a novel signal processing approach. In Proceedings of the 1999 American Control Conference, pages 2526—2531, 1999.