EM-based multiuser detection and parallel interference cancellation for space-time block coded WCDMA systems employing 16-QAM over multipath fading channels

Author

Iraji, Sassan ; Lilleberg, Jorma

Author_Institution

Nokia Mobile Phones, Oulu, Finland

Volume

2

fYear

2002

fDate

15-18 Sept. 2002

Firstpage

688

Abstract

We consider the design of iterative multiuser detectors based on the expectation-maximization (EM) algorithm and parallel interference cancellation (PIC) for spacetime block coded (STBC) WCDMA employing 16-QAM in multipath fading channels. We show that the EM-based and PIC receivers improve the receiver performance particularly when two receive antennas are employed. We see that EM receiver shows better performance than PIC. In fact, the PIC is a special case of our proposed EM-based detector.

Keywords

code division multiple access; fading channels; interference suppression; multiuser detection; optimisation; quadrature amplitude modulation; receiving antennas; 16-QAM; EM-based multiuser detection; PIC receivers; STBC; expectation-maximization algorithm; multipath fading channels; parallel interference cancellation; receive antennas; space-time block coded WCDMA systems; Block codes; Detectors; Fading; Interference cancellation; MIMO; Multiaccess communication; Multiple access interference; Multiuser detection; Receiving antennas; Space technology;

fLanguage

English

Publisher

ieee

Conference_Titel

Personal, Indoor and Mobile Radio Communications, 2002. The 13th IEEE International Symposium on

Print_ISBN

0-7803-7589-0

Type

conf

DOI

10.1109/PIMRC.2002.1047310

Filename

1047310