Apparatus and method and decoding biphase signals

Details Apparatus and method and decoding biphase signals Apparatus and method and decoding biphase signals

2007-11-06

2007-11-06

Ghayour, Mohammed (Department: 2611)

Pulse or digital communications

Receivers

Angle modulation

C375S331000, C375S332000, C375S348000, C375S349000, C714S758000, C714S760000

Reexamination Certificate

active

11441943

ABSTRACT:
A technique of decoding a biphase signal comprises sampling the biphase signal to obtain phase sample values and sampling the biphase signal to obtain magnitude sample values. A first digital signal is derived from the phase sample values and associated bit combinations are formed from the first digital signal. A decision is made whether the bit combination is an erroneous bit combination, and a probability check is performed to obtain probability values that decide which parts of the erroneous bit combination are true and which are false. A corrected bit combination is generated from the obtained probability values, and a second digital signal is generated whose data states are formed from the valid bit combination and, in the presence of an erroneous bit combination, from the corrected bit combination.

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