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
10721533
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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Fang Yuguang
Kim Byung-Seo
Akerman & Senterfitt
Tran Khai
University of Florida Research Foundation Inc.
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