DocumentCode :
878980
Title :
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
Link To Document :
بازگشت