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

fYear

2007

fDate

1-5 July 2007

Firstpage

1

Lastpage

4

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ISTMWC.2007.4299246

Filename

4299246