Performance analysis and iterative decoding of I-Q trellis space-time codes

Author

Zummo, S.A. ; Stark, W.E.

Author_Institution

Electr. Eng. Dept., King Fahd Univ. of Pet. & Miner., Dhahran, Saudi Arabia

Volume

153

Issue

2

fYear

2006

fDate

4/1/2006 12:00:00 AM

Firstpage

233

Lastpage

237

Abstract

I-Q trellis codes are known to increase the time diversity of coded systems. When I-Q codes are used with multiple transmit antennas, the decoding and performance evaluation requires the construction of the high-complexity super-trellis of the component codes. In the paper, the bit error probability and the design criteria of I-Q ST codes are derived using the transfer functions of the component codes. Conditions for the geometrical uniformity of I-Q space-time (ST) codes are derived from the geometrical uniformity of the component codes. In addition, a low-complexity iterative receiver for I-Q ST codes is presented. The receiver essentially performs iterative detection and decoding. Results show that three iterations of the iterative receiver performs very close to the optimal decoding.

Keywords

antenna arrays; diversity reception; error statistics; geometric codes; iterative decoding; radio receivers; space-time codes; transfer functions; transmitting antennas; trellis codes; I-Q ST code; IDD; bit error probability; component code; geometrical uniformity; iterative detection-decoding; low-complexity iterative receiver; multiple transmit antenna; performance evaluation; time diversity; transfer function; trellis space-time code;

fLanguage

English

Journal_Title

Communications, IEE Proceedings-

Publisher

iet

ISSN

1350-2425

Type

jour

DOI

10.1049/ip-com:20045272

Filename

1610497