Pulse or digital communications – Receivers – Angle modulation
Reexamination Certificate
2008-01-29
2008-01-29
Tran, Khai (Department: 2611)
Pulse or digital communications
Receivers
Angle modulation
C375S260000
Reexamination Certificate
active
07324613
ABSTRACT:
An efficient system and method for modulation and demodulation to achieve a high data rate using Bit-Interleaved Coded Modulation and OFDM uses either a coherent or a non-coherent transmission scheme using differential modulation. In order to maintain a high data rate impervious to sudden phase changes, a communication system uses an efficient constellation having multiple rings with different sizes and modulation/demodulation schemes utilizing this constellation. In power line communications, the channel gain information is obtained easily at a receiver (100) while the phase information is not. Thus, the communication system uses an absolute magnitude and differential phase coding for modulation and demodulation of the signals.
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Liu et al., “Wide Band AC Power Line Characterization,” IEEE Transactions on Consumer Electronics, pp. 1087-1097, Nov. 1999.
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Fischer et al., “Coded Modulation for Noncoherent Reception with Application to OFDM,” IEEE Transactions on Vehicular Technology, 50:910-919, Jul. 2001.
Caire et al., “Bit-Interleaved Coded Modulation,” IEEE Transactions on Information Theory, 44:927-946, May 1998.
Fang Yuguang
Kim Byung-seo
Akerman & Senterfitt
Tran Khai
University of Florida Research Foundation Inc.
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