| To be fully utilized in spectrum agile networks, future communications devices must operate in various frequency bands and use several different modulation formats and error-control codes. Protocols that enable efficient and reliable adaptation of modulation, coding, and transmitter power are critical for such devices. Radios that employ adaptive transmission protocols can exploit good channel conditions and compensate if the channel quality declines, which improves the survivability of the network. We explore the performance of a combined protocol for adaptation of modulation, coding, and transmitter power for a high-rate direct-sequence spread-spectrum system. This combined protocol requires only simple statistics that are obtained easily from the demodulator and decoder, and only a few bits of feedback are required. |
| Michael B. Pursley received the B.S. and M.S. degrees in electrical engineering from Purdue University and the Ph.D. in electrical engineering from the University of Southern California where he was a Howard Hughes Doctoral Fellow. He was with the Space and Communications Group of the Hughes Aircraft Company during 1968–74. In 1974, Dr. Pursley joined the Department of Electrical and Computer Engineering at the University of Illinois, Urbana-Champaign, where he was promoted to the rank of Professor in 1980. Since 1992, Dr. Pursley has held the Holcombe Endowed Chair in Electrical and Computer Engineering at Clemson University, Clemson, South Carolina. He is the author of two textbooks published by Prentice Hall: Random Processes in Linear Systems (2002) and Introduction to Digital Communications (2005).
Dr. Pursley was elected Fellow of the IEEE in 1982 and President of the IEEE Information Theory Society in 1983. He was a member of the Editorial Board of the Proceedings of the IEEE during 1984–91. He is currently a member of Editorial Advisory Board for the International Journal of Wireless Information Networks, a Senior Editor of the IEEE Journal of Selected Areas in Communications, and a Distinguished Lecturer for the IEEE Communications Society. In 2005, he received a distinguished alumnus award from the University of Southern California. He was awarded an IEEE Centennial Medal in 1984, the Ellersick best paper award in 1996, the MILCOM Award for Technical Achievement in 1999, and an IEEE Millennium Medal in 2000. He received the IEEE Communications Society Edwin Howard Armstrong Achievement Award in 2002.
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