Reception of co-channel signals

摘要

System (100) and methods (3500) for receive processing of a burst communication system where co-channel signals (318) collide in a receiver (150). The methods comprise: simultaneously receiving co-channel signals (2002, 2004, 2006) transmitted from remote transmitters (104-112) at a first frequency; and independently performing a first iteration of a Turbo MUD process for a first co-channel signal and a second co-channel signal. The Turbo MUD process comprises: segmenting each of the first and second co-channel signals into a plurality of segments (2102, 2104, 2106) each having a unique SINR; computing a noise plus interference variance estimate for each segment; computing first bit likelihood values for each segment based on the noise variance estimate; computing second bit likelihood values for each segment based on the first bit likelihood values; and using the second bit likelihood values (i.e., soft in soft-out) to generate a first estimate of the first and second co-channel signals.

主权项

1. A method for receive processing of a burst communication system where a plurality of co-channels signals collide in a receiver, comprising:
simultaneously receiving at least a portion of the plurality of co-channel signals transmitted from a plurality of remote transmitters at a first frequency; and independently performing a first iteration of a Turbo MUD process for a first co-channel signal and a second co-channel signal of the plurality of co-channel signals, said Turbo MUD process comprising
segmenting each of the first and second co-channel signals into a plurality of segments each having a unique Signal to Interference plus Noise Ratio,computing a noise variance estimate for each of the plurality of segments, computing first bit likelihood values for each of the segments based on the noise variance estimate,computing second bit likelihood values for each of the segments based on the first bit likelihood values, andusing the second bit likelihood values to generate a first estimate of the first and second co-channel signals.