The performance of preRAKE diversity combining based on QPSK modulation in time-division duplex CDMA mobile communications

Author

Song, Yue ; Xiao, Yang

Author_Institution

Inst. of Inf. Sci., Northern Jiaotong Univ., Beijing, China

Volume

2

fYear

2002

fDate

26-30 Aug. 2002

Firstpage

1351

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. From the results we find that QPSK has the advantage of stability over BPSK while both of them have the same average bit error rate (BER). This advantage, together with the superiority over the RAKE receiver of moving the circuitry from the mobile unit (MU) to the base station (BS), makes the preRAKE technique useful in TDD systems.

Keywords

code division multiple access; diversity reception; error statistics; mobile radio; quadrature phase shift keying; radio receivers; time division multiple access; CDMA; QPSK modulation; TDD; average BER; base station; bit error rate; code-division multiple access; mobile communications; mobile unit; performance; preRAKE diversity combining; quarter phase-shift keying; stability; time-division duplexing; Bit error rate; Circuit stability; Diversity reception; Mobile communication; Modulation coding; Multiaccess communication; Performance analysis; Phase modulation; Phase shift keying; Quadrature phase shift keying;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing, 2002 6th International Conference on

Print_ISBN

0-7803-7488-6

Type

conf

DOI

10.1109/ICOSP.2002.1180042

Filename

1180042