IEEE Communications Letters · 2004 · 86 citations · 14 references
EngineeringComputer EngineeringElectrical EngineeringDigital CommunicationInformation TheoryWireless CommunicationsChannel CapacityChannel CodingCoding TheoryError-correcting CodesMultiple Access TechniquesWireless Channel ModelingCode CapacityGaussian Channel CapacityInterleaved Multiple AccessIterative DecodingMultiple-access Channel CapacityMultiple-access Channels
We show that the capacity of a Gaussian multiple access channel can be approached by interleaved low-rate codes together with a simple chip-by-chip iterative decoding strategy. Based on a rate /spl ap/ 1/69 code and with a total of 35 simultaneous users (the aggregate rate /spl ap/ 1/2), performance of BER=10/sup -5/ is observed at E/sub b//N/sub 0/ /spl ap/ 1.4 dB, which is close to the corresponding capacity limit (E/sub b//N/sub 0/ /spl ap/ 0 dB).
14