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http://dx.doi.org/10.6109/jkiice.2007.11.2.385

Performance Analysis of the Optimal Turbo Coded V-BLAST technique in Adaptive Modulation System  

Lee, Kyung-Hwan (전남대학교 컴퓨터정보통신공학과)
Choi, Kwang-Wook (전남대학교 컴퓨터정보통신공학과)
Ryoo, Sang-Jin (전남대학교 전자공학과)
Kang, Min-Goo (한신대학교 정보통신공학과)
Hong, Dae-Ki (상명대학교 정보통신공학과)
You, Cheol-Woo (명지대학교 통신공학과)
Hwang, In-Tae (전남대학교 전자컴퓨터공학과)
Kim, Cheol-Sung (전남대학교 전자컴퓨터공학과)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.11, no.2, 2007 , pp. 385-391 More about this Journal
Abstract
In this paper, we propose and observe the Adaptive Modulation system with optimal Turbo Coded V-BLAST (Vertical-Bell-lab Layered Space-Time) technique that is applied the extrinsic information from MAP (Maximum A Posteriori) Decoder with Iterative Decoding to use as a priori probability in two decoding procedures of V-BLAST: ordering and slicing. Also, comparing with the Adaptive Modulation system using conventional Turbo Coded V-BLAST technique that is simply combined V-BLAST with Turbo Coding scheme, we observe how much throughput performance has been improved. As a result of simulation, in the Adaptive Modulation systems with several Turbo Coded V-BLAST techniques, the optimal Turbo Coded V-BLAST technique has higher throughput gain than the conventional Turbo Coded V-BLAST technique. Especially, the results show that the proposed scheme achieves the gain of 1.5 dB SNR compared to the conventional system at 2.5 Mbps throughput.
Keywords
AMC; Turbo Code; V-BLAST; MAP Decoder; Iterative Decoding;
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