Method and receiver for demodulating a received signal

Details Method and receiver for demodulating a received signal Method and receiver for demodulating a received signal

1995-02-27

1997-03-25

Chin, Stephen

Pulse or digital communications

Repeaters

Testing

H04B 169

Patent

active

056152264

ABSTRACT:
A method and receiver for demodulating a DS/CDMA signal increases a receiver's (60) sensitivity and as a result the system capacity of a DS/CDMA cellular communications system. A Reduced State Sequence Estimator (RSSE) (68) finds a path (210) with the highest energy. An efficient method and apparatus for determining the path energies (212) selects a new path (210) to differ from a previous path (210) by a single reduced state (200). A difference (306) between an I and Q magnitude of the new and omitted reduced state (200) is computed (304). This difference is added to the previous path's total I (308) and Q magnitude, to compute the new path's I and Q magnitude. These I and Q magnitudes are used to compute a path energy (322) and the highest path's energy (326) is used to select the best path for decoding (70).

REFERENCES:
patent: 5224127 (1993-06-01), Okanoue
patent: 5272727 (1993-12-01), Okanoue
patent: 5465269 (1995-11-01), Schaffner et al.
Walton, Rod and Wallace, Mark, "Near Maximum Likelihood Demodulation for M-ary Orthogonal Signalling", GTE Laboratories Incorporated, 1993 IEEE.

Affiliated with

Also associated with

Rating

Method and receiver for demodulating a received signal does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and receiver for demodulating a received signal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and receiver for demodulating a received signal will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2210319