Iterative Decoding Algorithm in the Adaptive Modulation and Coding System with MIMO Schemes

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概要

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• In this paper, we propose and analyze the adaptive modulation system with optimal Turbo Coded V-BLAST (Vertical-Bell-lab Layered Space-Time) technique that adopts extrinsic information from a MAP (Maximum A Posteriori) decoder with iterative decoding as a priori probability in two decoding procedures of V-BLAST scheme; the ordering and the slicing. Also, we consider the AMC (Adaptive Modulation and Coding) using the conventional Turbo Coded V-BLAST technique that simply combines the V-BLAST scheme with the turbo coding scheme. And we compare the proposed iterative decoding algorithm to a conventional V-BLAST decoding algorithm and a ML (Maximum Likelihood) decoding algorithm. In this analysis, the MIMO (Multiple Input Multiple Output) and the STD (Selection Transmit Diversity) schemes are assumed to be parts of the system for performance improvement. Results indicate that the proposed systems achieve better throughput performance than the conventional systems over the whole SNR (Signal to Noise Ratio) range. In terms of transmission rate performance, the suggested system is close in proximity to the conventional system using the ML decoding algorithm. In addition, the simulation result shows that the maximum throughput improvement in each MIMO scheme is respectively about 350kbps, 460kbps, and 740kbps. It is suggested that the effect of the proposed iterative decoding algorithm accordingly gets higher as the number of system antenna increases.

• （社）電子情報通信学会の論文
• 2008-04-01

著者

• YOU Cheolwoo

  Dept. of Communication Engineering, Myongji University

• Ryoo Sangjin

  School Of Electronics And Computer Engineering Chonnam National University

• Hwang Intae

  School Of Electronics And Computer Engineering Chonnam National University

• You Cheolwoo

  Dept. Of Communications Engineering Myongji University

• HWANG Intae

  Dept. of Electronics & Computer Engineering, Chonnam National University

• RYOO Sangjin

  Dept. of Electronics Engineering, Chonnam National University

• LEE Kyunghwan

  Dept. of Computer Engineering, Chonnam National University

• You Cheolwoo

  Dept. Of Communication Engineering Myongji University

• Lee Kyunghwan

  Dept. Of Computer Engineering Chonnam National University

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• Adaptive Modulation and Coding Scheme with Independent MCS Level Selection in MIMO Systems
• Iterative Decoding Algorithm in the Adaptive Modulation and Coding System with MIMO Schemes
• A Broadcast Scheme for MIMO Systems with Channel State Information at the Transmitter
• Multichannel Random Access Protocol with Capture Effect for Cellular Relaying Networks
• Performance Analysis of a New Preamble-Based SNR Estimation Algorithm

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