Title :
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
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;
Conference_Titel :
Signals, Systems and Computers, 2004. Conference Record of the Thirty-Seventh Asilomar Conference on
Print_ISBN :
0-7803-8104-1
DOI :
10.1109/ACSSC.2003.1292101
