Joint demodulation using spatial maximum likelihood
First Claim
Patent Images
1. A method for receiving a plurality of signals via a plurality of paths in which each path comprises an independent signal mixing process giving rise to an independent mixture of said signals, comprising the steps of:
- applying said independent mixing processes to hypotheses of said signals to produce predictions of said independent mixtures;
comparing each of said predicted mixtures with a mixture received via a corresponding path and generating a mismatch indication; and
processing said mismatch indications to decode said signals.
0 Assignments
0 Petitions
Accused Products
Abstract
Methods and systems for processing signals in radio communication systems are described which include processes for handling co-channel interference while reducing the number of Viterbi states being processed. A spatial analogy to the Viterbi MLSE process is provided. Both the uplink and downlink cases are described.
-
Citations
6 Claims
-
1. A method for receiving a plurality of signals via a plurality of paths in which each path comprises an independent signal mixing process giving rise to an independent mixture of said signals, comprising the steps of:
-
applying said independent mixing processes to hypotheses of said signals to produce predictions of said independent mixtures; comparing each of said predicted mixtures with a mixture received via a corresponding path and generating a mismatch indication; and processing said mismatch indications to decode said signals. - View Dependent Claims (2, 3, 4, 5)
-
-
6. A demodulator for a multi-channel receiver comprising:
-
means for receiving signals on each of a plurality of channels; means for making sets of symbol hypotheses for signals received on each of said plurality of adjacent channels; means for predicting said received signals using said sets of symbol hypotheses; means for comparing said predicted signals with respective, actually-received, signals and calculating mismatches therebetween; and means for accumulating said mismatches for each set of hypotheses for each signal and selecting a set having a lowest cumulative mismatch after processing signals received on each of said plurality of adjacent channels.
-
Specification