Title :
Implementation of different behaviours of DS-CDMA systems with multiuser detectors
Author :
Marcu, Ioana M. ; Halunga, Simona V. ; Fratu, Octavian
Author_Institution :
Fac. of ETTI, Politeh. Univ. of Bucharest, Bucharest, Romania
Abstract :
In this paper we present a comparative analysis of conventional & MMSE multiuser detectors performances in CDMA systems. At base station end the main reason that affects performances is multiple access interference. It can be caused by non-perfectly orthogonal spreading codes used to differentiate the users or by (im)perfect power conditions. The evaluation criterion for performances is BER versus SNR. Based on the obtained results several important conclusions for the usage of these detectors can be withdrawn.
Keywords :
code division multiple access; error statistics; least mean squares methods; BER; DS-CDMA systems; MMSE multiuser detectors; SNR; base station; multiple access interference; nonperfectly orthogonal spreading codes; Bit error rate; Correlation; Decoding; Detectors; Multiaccess communication; Multiuser detection; Signal to noise ratio; Multiuser; comparison; detection; performances;
Conference_Titel :
Telecommunication in Modern Satellite Cable and Broadcasting Services (TELSIKS), 2011 10th International Conference on
Conference_Location :
Nis
Print_ISBN :
978-1-4577-2018-5
DOI :
10.1109/TELSKS.2011.6143240
