Title :
Simplified Local Search Algorithm for Multiuser Detection in Multipath Rayleigh Channels
Author :
De Oliveira, Leonardo D. ; Abrão, Taufik ; Jeszensky, Paul Jean E
Author_Institution :
DEEL-UEL State Univ. of Londrina, Londrina
Abstract :
This work intends to show that the simple 1-optimum local search (LS) technique is enough to solve the multiuser detection problem with an excellent performance-complexity trade-off. Based on the deterministic behavior of the LS algorithm and some simplifications in the cost function calculation, a more efficient algorithm can be obtained and also a new perspective about the multiuser detector implementation. The performance and complexity analysis are evaluated considering a DS/CDMA system under multipath fading channels.
Keywords :
Rayleigh channels; code division multiple access; multipath channels; multiuser detection; search problems; spread spectrum communication; 1-optimum local search algorithm; DS-CDMA system; cost function calculation; multipath Rayleigh channels; multiuser detection problem; performance-complexity trade-off; AWGN; Control engineering; Delay; Detectors; Fading; Multiaccess communication; Multipath channels; Multiple access interference; Multiuser detection; Rayleigh channels;
Conference_Titel :
Mobile and Wireless Communications Summit, 2007. 16th IST
Conference_Location :
Budapest
Print_ISBN :
963-8111-66-6
Electronic_ISBN :
963-8111-66-6
DOI :
10.1109/ISTMWC.2007.4299246
