Coded modulation assisted iterative parallel interference cancellation aided CDMA

Author

Wei, H. ; Ng, S.X. ; Hanzo, L.

Author_Institution

Dept. of ECS, Southampton Univ., UK

Volume

2

fYear

2003

fDate

6-9 Oct. 2003

Firstpage

1109

Abstract

We investigate trellis coded modulation (TCM) and turbo trellis coded modulation (TTCM) assisted iterative parallel interference cancellation aided CDMA schemes. The symbol-based maximum a posteriori (MAP) algorithm is invoked in both the TTCM and TCM decoder. In the context of the 8PSK TCM/TTCM CDMA schemes, typically two iterations are necessary for approaching the best possible performance attained with the aid of an infinite number of iterations. By contrast, the number of iterations has to be increased to three or four in conjunction with 16QAM when the effective information throughput is increased from 2 to 3 bits per symbol.

Keywords

interference suppression; iterative methods; maximum likelihood decoding; maximum likelihood estimation; multiuser detection; phase shift keying; quadrature amplitude modulation; radio receivers; trellis coded modulation; turbo codes; CDMA; MAP algorithm; MAP decoder; PSK; QAM; TCM; iterative multiuser detection; iterative parallel interference cancellation; maximum a posteriori algorithm; receiver; turbo trellis coded modulation; Detectors; Fading; Interference cancellation; Iterative algorithms; Iterative decoding; Modulation coding; Multiaccess communication; Multipath channels; Multiuser detection; Signal processing;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2003. VTC 2003-Fall. 2003 IEEE 58th

ISSN

1090-3038

Print_ISBN

0-7803-7954-3

Type

conf

DOI

10.1109/VETECF.2003.1285193

Filename

1285193