Power and confidence ordered low complexity soft turbomud with voting system

A method for processing receiver signals from multiple users, comprising the steps of:

• processing said receiver signals in a front end to generate a digital stream of signal samples;
• performing parameter estimation of said digital stream;
• ordering of users, wherein said ordering is a power ordering of said digital stream on a first iteration, and confidence ordering on subsequent iterations;
• detecting a plurality of survivors from a set of symbol streams for each user;
• voting on said survivors to generate a set of a soft-valued outputs, one stream for each user;
• decoding said soft-valued outputs to form a set of confidence values;
• repeating said steps of confidence ordering, detecting, voting, and decoding until a final state is obtained;
• and
• outputting data estimates corresponding to a set of data bits.

A receiver system for processing signals from multiple users with interfering signals, comprising:

• a front end unit for receiving and processing incoming receptions;
• a parameter estimator unit coupled to said front end unit for processing said receptions;
• a filter section coupled to said front end unit;
• an ordering unit coupled to said parameter estimation unit for ordering users indices, wherein on a first iteration ordering is based on received signal power, and wherein on subsequent iterations ordering is based on confidence values;
• a multi-user detector coupled to said ordering unit and said filter section producing a plurality of surviving states;
• a voting unit coupled to said multi-user detector for processing said surviving states and generating a set of soft estimates of channel symbols;
• and
• a decoder section coupled to said voting unit and said multi-user detector, wherein said decoder section processes said soft estimates of channel symbols to produce a final output on a final iteration, and wherein said decoder produces said confidence values for intermediate iterations.