Title :
The performance of preRAKE diversity combining under imperfect channel estimation based on QPSK modulation in TDD CDMA system
Author :
Song, Yue ; Xiao, Yang
Author_Institution :
Inst. of Inf. Sci., Northern Jiaotong Univ., Beijing, China
Abstract :
This paper analyzes the performance of preRAKE techniques., which is proposed for the time-division duplex (TDD) code-division multiple-access (CDMA) systems, based on quarter phase-shift keying (QPSK) modulation. This analysis is under both perfect and imperfect channel estimation, and the obtained bit error rate (BER) is simulated through Monte-Carlo integration. Then we can see the difference of performance between the ideal and the nonideal preRAKE systems. Also we can see the impact of the number of paths and users.
Keywords :
Monte Carlo methods; channel estimation; digital simulation; diversity reception; error statistics; multiuser channels; quadrature phase shift keying; radio receivers; spread spectrum communication; BER; DS-CDMA; Monte-Carlo integration; QPSK modulation; RAKE receiver; TDD CDMA system; bit error rate; direct-sequence code-division multiple access; ideal preRAKE system; imperfect channel estimation; nonideal preRAKE system; perfect channel estimation; preRAKE diversity combining; quarter phase-shift keying; simulation; time-division duplex CDMA systems; Analytical models; Bit error rate; Channel estimation; Diversity reception; Modulation coding; Multiaccess communication; Performance analysis; Phase modulation; Phase shift keying; Quadrature phase shift keying;
Conference_Titel :
TENCON '02. Proceedings. 2002 IEEE Region 10 Conference on Computers, Communications, Control and Power Engineering
Print_ISBN :
0-7803-7490-8
DOI :
10.1109/TENCON.2002.1180322
