Publications

Scheduling and Routing Design for Wireless Sensor Networks:

1. H. Lee, A. Keshavarzian, and H. Aghajan, "Multi-cluster Multi-parent Wake-up Scheduling in Delay-sensitive Wireless Sensor Networks," in Proc. of IEEE Globecom, Nov. 2008.
2. H. Lee and A. Keshavarzian, "Toward Energy-optimal Collision-free Scheduling for Reliable Data Collection in Wireless Sensor Networks," in Proc. of IEEE INFOCOM, Apr. 2008. [PDF] [Slides]
3. A. Keshavarzian, H. Lee, L. Venkatraman, D. Lal, K. Chintalapudi, and B. Srinivasan, "Wakeup Scheduling in Wireless Sensor Networks," in Proc. of the ACM International Symposium on Mobile Ad Hoc Networking and Computing, Florence, Italy, May 2006. [PDF]
4. L. Savidge, H. Lee, H. Aghajan, and A. Goldsmith, "Event-Driven Geographic Routing for Wireless Image Sensor Networks," in Proc. of the Conference on COGnitive systems with Interactive Sensors, Paris, France, Mar. 2006.
5. L. Savidge, H. Lee, H. Aghajan, and A. Goldsmith, "QoS-Based Geographic Routing for Event-Driven Image Sensor Networks," in Proc. of the International Conference on Broadband Networks, Workshop on Broadband Advanced Sensor Networks, Boston, MA, USA, Oct. 2005. [PDF]

Vision-Based Localization for Smart Camera Networks:

1. H. Lee and H. Aghajan, "Collaborative Node Localization in Surveillance Networks using Opportunistic Target Observations," in Proc. of ACM Multimedia (4th ACM International Workshop on Video Surveillance & Sensor Networks), Santa Barbara, CA, USA, Oct. 2006.
2. H. Lee, H. Dong, and H. Aghajan, "Robot-Assisted Localization Techniques for Wireless Image Sensor Networks," in Proc. of the Annual IEEE Communications Society Conference on Sensor, Mesh and Ad Hoc Communications and Networks, Reston, VA, USA, Sept. 2006.
3. H. Lee, L. Savidge, and H. Aghajan, "Subspace Techniques for Vision-Based Node Localization in Wireless Sensor Networks," in Proc. of the International Conference on Acoustics, Speech and Signal Processing, Toulouse, France, May 2006. [PDF]
4. H. Lee and H. Aghajan, "Vision-Enabled Node Localization in Wireless Sensor Networks," in Proc. of the Conference on COGnitive systems with Interactive Sensors, Paris, France, Mar. 2006.
5. C. McCormick, P. Laligand, H. Lee, and H. Aghajan, "Distributed Agent Control with Self-Localizing Wireless Image Sensor Networks," in Proc. of the Conference on COGnitive systems with Interactive Sensors, Paris, France, Mar. 2006.
6. H. Lee and H. Aghajan, "Collaborative Self-Localization Techniques for Wireless Image Sensor Networks," in Proc. of the Asilomar Conference on Signals, Systems and Computers, Asilomar, CA, USA, Oct. 2005. [PDF]

Vision-Based Reasoning for Smart Camera Networks:

1. H. Lee, L. Tessens, M. Morbee, H. Aghajan, and W. Philips, "Sub-Optimal Camera Selection in Practical Vision Networks through Shape Approximation," in Proc. of Advanced Convepts for Intelligent Vision Systems, Juan-les-Pins, France, Oct. 2008.
2. M. Morbee, L. Tessens, H. Lee, W. Philips, and H. Aghajan, "Optimal Camera Selection in Vision Networks through Shape Approximation," in Proc. of International Workshop on Multimedia Signal Processing, Queensland, Australia, Oct. 2008.
3. L. Tessens, M. Morbee, H. Lee, W. Philips, and H. Aghajan, "Principal View Determination for Camera Selection in Distributed Smart Camera Networks," in Proc. of 2nd International Conference on Distributed Smart Cameras, Stanford, CA, Sept. 2008.
4. H. Lee, C. Wu, and H. Aghajan, "Nonstationary Background Removal via Multiple Camera Collaboration," in Proc. of 1st International Conference on Distributed Smart Cameras, Vienna, Austria, Sept. 2007.

Wireless Communications:

1. H. Lee and K. C. Chen, "Performance Analysis and Improvement of Decorrelating Detection for Multi-Rate DS/CDMA," IEEE Communications Letters, Feb. 2005.
2. H. Lee and K. C. Chen, "Trellis-Coded DS/CDMA Multiuser Communications," in Proc. of the IEEE International Conference on Communications, Paris, France, Jun. 2004.
3. H. Lee and K. C. Chen, "Near-Optimum Trellis-Coded DS/CDMA Multiuser Communications," in Proc. of the IEEE Vehicular Technology Conference, Orlando, FL, USA, Oct. 2003.

Patents

1. A. Keshavarzian and H. Lee, "Method for Data Collection and Supervision in Wireless Node Networks," 2008 (Pending).
2. A. Keshavarzian, L. Venkatraman, and H. Lee, "Node Control Using Crossed Ladder Pattern in Wireless Sensor Networks," EP 1780951, 2007.