Time-phase-hopping modulation and demodulation of multiple bit streams with phase-change frequency control, such as for wireless chip area network
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United States of America Patent
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Feb 2, 2016
Grant Date -
Feb 12, 2015
app pub date -
Apr 27, 2012
filing date -
Apr 27, 2012
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Abstract
Methods and systems to modulate and demodulate first and second path bits within sequences of pulses, where each pulse represents first and second path bits and is position-modulated and phase-modulated based on binary values of the corresponding bits, with no more than 1 phase change per N pulses. Position-modulation may be based on first-path bits. Phase-modulation may be based on second-path bits. A modulator first path has an input data rate Q times that of a second path. The first may include an N-bit encoder. The second path may include a Q-bit encoder and an N-bit repetition encoder. A demodulator includes a first path to determine first path bit values based on pulse coordinates integrated over N frames, and a second path to determine second path bit values based on further integration over Q frames.
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