Title :
An efficient soft-in-soft-out multiuser detector for synchronous CDMA with error-control coding
Author :
Nasiri-Kenari, Masoumeh ; Sylvester, Randal R. ; Rushforth, Craig K.
Author_Institution :
Dept. of Electr. Eng., Sharif Univ. of Technol., Tehran, Iran
fDate :
8/1/1998 12:00:00 AM
Abstract :
We consider synchronous code-division multiple-access (CDMA) communications incorporating an error-control code (ECC) for improved performance. We describe a reduced-complexity multiuser sequence detector and develop a simple method for computing reliability values for the bit decisions produced by this detector. This reliability information is used by a soft-input Viterbi algorithm to decode the ECC. We compare the uncoded and coded performance of this reduced-complexity detector to those of certain decision-feedback equalizer (DFE) multiuser detectors. Simulation shows that the reduced-complexity sequence detector works better than the DFE detectors
Keywords :
Viterbi decoding; code division multiple access; decision feedback equalisers; error correction codes; reliability; sequences; signal detection; synchronisation; DFE multiuser detectors; Viterbi decoder; bit decisions; code-division multiple-access; coded performance; decision-feedback equalizer; error-control code; error-control coding; multiuser sequence detector; reduced-complexity sequence detector; reliability; simulation; soft-in-soft-out multiuser detector; soft-input Viterbi algorithm; synchronous CDMA; uncoded performance; Cities and towns; Code division multiplexing; Covariance matrix; Decision feedback equalizers; Decorrelation; Detectors; Error correction codes; Interference elimination; Multiaccess communication; Statistics;
Journal_Title :
Vehicular Technology, IEEE Transactions on
