Optimal two-layer coherent demodulation for D-PSK...

Details Optimal two-layer coherent demodulation for D-PSK... Optimal two-layer coherent demodulation for D-PSK...

2007-09-07

2010-12-28

Wang, Ted M (Department: 2611)

Pulse or digital communications

Receivers

Angle modulation

C375S316000, C375S324000, C375S340000

Reexamination Certificate

active

07860191

ABSTRACT:
A D-PSK demodulator utilizes a two-layer coherent approach to estimate the phase shift of adjacent symbols. There is generated a probability set of each received symbol being one of possible constellation values. There is also generated a probability set of each of possible phase difference between two adjacent symbols. This probability set is then converted into soft bit information according to specific mathematical operation.

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