Title :
A novel low-complexity near-ML multiuser detector for DS-CDMA and MC-CDMA systems
Author :
Li, Yi-Lin ; Lee, Yumin
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
We propose a novel low-complexity multi-user detection algorithm based on tree search for a unified signal model that applies to both direct sequence code-division multiple access (DS-CDMA) and multi-carrier CDMA (MC-CDMA) systems. Simulation results show that the proposed algorithm outperforms most previously proposed multi-user detection schemes, and can achieve near-optimal (maximum likelihood) performance with very low complexity.
Keywords :
code division multiple access; computational complexity; maximum likelihood detection; multiuser detection; search problems; spread spectrum communication; DS-CDMA detectors; MC-CDMA systems; direct sequence code-division multiple access; low-complexity near-ML multiuser detector; maximum likelihood performance; multi-carrier CDMA; near-optimal performance; simulation results; tree search; unified signal model; Detectors; Frequency diversity; Gaussian noise; Matched filters; Maximum likelihood detection; Multiaccess communication; Multicarrier code division multiple access; Multiple access interference; Multiuser detection; Symmetric matrices;
Conference_Titel :
Global Telecommunications Conference, 2002. GLOBECOM '02. IEEE
Print_ISBN :
0-7803-7632-3
DOI :
10.1109/GLOCOM.2002.1188128
