Title :
Linear multiuser detection study in DS-CDMA system in AWGN channel
Author_Institution :
Dept. of the Design & Technol. of Electron., Novosibirsk State Tech. Univ., Novosibirsk, Russia
Abstract :
Direct sequence code division multiple access has been very successfully used by the military for decades and now is the most popular wireless technology. This paper presents comparative study between linear multiuser detectors, and conventional single user matched filter in DS-CDMA system. Analysis and simulations are conducted in synchronous AWGN channel, and Gold sequence is used as the spreading codes. The study shows that linear multiuser detectors perform better than the conventional matched filter in terms of BER performance. Although, MMSE detector provides better error performance than the decorrelating detector, the performance of all degrade as number of users increase.
Keywords :
AWGN channels; code division multiple access; error statistics; least mean squares methods; matched filters; multiuser detection; spread spectrum communication; BER; DS-CDMA system; Gold sequence; MMSE detector; direct sequence code division multiple access; linear multiuser detection; single user matched filter; synchronous AWGN channel; Artificial neural networks; Decorrelation; Filter bank; Indexes; Multiaccess communication; Signal to noise ratio; Welding; CDMA; MMSE; decorrelating; matched filter; multiuser detection;
Conference_Titel :
Actual Problems of Electronic Instrument Engineering (APEIE), 2010 10th International Scientific-Technical Conference on
Conference_Location :
Novosibirsk
Print_ISBN :
978-1-4244-8209-2
Electronic_ISBN :
978-1-4244-8210-8
DOI :
10.1109/APEIE.2010.5677324
