TY - JOUR
T1 - An efficient CDMA decoder for correlated information sources
AU - Efraim, Hadar
AU - Yacov, Nadav
AU - Shental, Ori
AU - Kanter, Ido
PY - 2009
Y1 - 2009
N2 - We consider the detection of correlated information sources in the ubiquitous code-division multiple-access (CDMA) scheme. We propose a message-passing based scheme for detecting correlated sources directly, with no need for source coding. The detection is done simultaneously over a block of transmitted binary symbols (word). Simulation results are provided, demonstrating a substantial improvement in bit error rate in comparison with the unmodified detector and the alternative of source compression. The robustness of the error-performance improvement is shown under practical model settings, including wrong estimation of the generating Markov transition matrix and finite-length spreading codes.
AB - We consider the detection of correlated information sources in the ubiquitous code-division multiple-access (CDMA) scheme. We propose a message-passing based scheme for detecting correlated sources directly, with no need for source coding. The detection is done simultaneously over a block of transmitted binary symbols (word). Simulation results are provided, demonstrating a substantial improvement in bit error rate in comparison with the unmodified detector and the alternative of source compression. The robustness of the error-performance improvement is shown under practical model settings, including wrong estimation of the generating Markov transition matrix and finite-length spreading codes.
KW - Error correcting codes
KW - Message-passing algorithms
UR - http://www.scopus.com/inward/record.url?scp=71049133050&partnerID=8YFLogxK
U2 - 10.1088/1742-5468/2009/07/P07039
DO - 10.1088/1742-5468/2009/07/P07039
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AN - SCOPUS:71049133050
SN - 1742-5468
VL - 2009
JO - Journal of Statistical Mechanics: Theory and Experiment
JF - Journal of Statistical Mechanics: Theory and Experiment
IS - 7
M1 - P07039
ER -