Iterative multiuser detection for non constant modulus constellations

Author

Laamari, Hedi ; Belfiore, Jean-Claude ; Ibrahim, Nicolas

Author_Institution

Dept. of COMELEC, Ecole Nat. Superieure des Telecommun. de Paris, France

Volume

1

fYear

2003

fDate

9-12 Nov. 2003

Firstpage

1133

Abstract

In this paper, a new iterative multiuser detector for non constant modulus constellations like 16 or 64 QAM is proposed. In fact a major part of the works on iterative multiuser detection for CDMA systems was dealing with constant modulus constellations for the reason that the CDMA systems, generally, use BPSK or 4-QAM modulation. By investigating an iterated-decision multiuser detector we ameliorate its performance for constant modulus constellations. Based on these results, the new iterative multiuser detection for non constant modulus constellations is proposed showing good performances.

Keywords

code division multiple access; iterative methods; multiuser detection; phase shift keying; quadrature amplitude modulation; BPSK; CDMA systems; QAM modulation; binary phase-shift keying; code division multiple access; iterative multiuser detection; nonconstant modulus constellations; quadrature amplitude modulation; Binary phase shift keying; Detectors; Digital signal processing; Interference; Iterative algorithms; Matched filters; Multiaccess communication; Multiuser detection; Quadrature amplitude modulation; Quadrature phase shift keying;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Systems and Computers, 2004. Conference Record of the Thirty-Seventh Asilomar Conference on

Print_ISBN

0-7803-8104-1

Type

conf

DOI

10.1109/ACSSC.2003.1292101

Filename

1292101