Patent ID: 7218690
Filing Date: 2007-05-15
Classification: H04B,H04L

Abstract:
1. A hybrid Multi-User Detector for processing raw input data comprised of a plurality of received signals, comprising: a parameter estimation unit that obtains information from said received signals, at least some of said information corresponding to transmitted signals; a high complexity multi-user detector coupled to said parameter estimation unit, wherein said high complexity multi-user detector performs a pruned tree search and outputs a plurality of information streams, one stream corresponding to each of said transmitted signals; a bank of high complexity error correction decoders coupled to said high complexity multi-user detector, wherein said bank of high complexity error correction decoders outputs a plurality of refined information streams; a low complexity multi-user detector coupled to said bank of high complexity error correction decoders and said parameter estimation unit, wherein said low complexity multi-user detector outputs a plurality of improved information streams; and a bank of low complexity error correction decoders coupled to said low complexity multi-user detector, wherein said bank of low complexity error correction decoders outputs a plurality of refined-improved information streams, said plurality of refined-improved information streams fed back to said low complexity multi-user detector until a final condition is reached and said bank of low complexity error correction decoders outputs a final plurality of symbol streams.