Method and apparatus for decoding an encoded signal

Details Method and apparatus for decoding an encoded signal Method and apparatus for decoding an encoded signal

1995-12-29

1999-01-19

Chan, Jason

Pulse or digital communications

Receivers

Particular pulse demodulator or detector

371 436, 371 438, H03D 100, H04L 2706

Patent

active

058621903

ABSTRACT:
A decoder (215) implemented in a receiver of a wireless communication system employs an improved method and apparatus for decoding an encoded signal. The receiver sums the energy values (156A, 156B, . . . 156N) from a plurality of fingers within to produce an aggregate energy value (166). From the aggregate energy value (166), a set of log-likelihood values (207) are generated with a non-linear function generator (205) before being deinterleaved by a deinterleaver (210). The deinterleaved values (213) are input to the decoder (215) which estimates the original signal (178) by incorporating path histories of bits in the estimation of subsequent, related bits. Use of the path histories of bits improves the estimates of the original signal (178), which translates into an increase in the sensitivity of the receiver.

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