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A Simple AMC Technique using ARQ for a MIMO-OFDM System based on IEEE 802.11a WLANs  

유승연 (연세대학교 전기전자공학과)
김경연 (연세대학교 전기전자공학)
이충용 (연세대학교 전기전자공학)
홍대식 (연세대학교 전기전자공학)
박현철 (한국정보통신 대학교 전기전자공학과)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.41, no.7, 2004 , pp. 1-8 More about this Journal
Abstract
A simple AMC (Adaptive Modulation and Coding) technique using ARQ (Automatic Repeat Request) for a MIMO (Multiple Input Multiple Output) system is proposed which does not require the additional feedback. In addition, the proposed AMC technique is different from the conventional technique in the aspect of considering the MCS (Modulation and Coding Scheme) level from the previous packet. The proposed technique can discard fewer amounts of unsuitable packets than the conventional technique. In the proposed system not only same rate control method for transmit antennas but also individual rate control method can be applied. The performance of the proposed technique is verified under a MIMO-OFDM (Orthogonal Frequency Division Multiplexing) system based on WLAN (Wireless Local Area Network), IEEE 802.11a. The results of the computer simulation show that a MIMO system with the proposed technique achieves higher throughput than one with a fixed transmission rate.
Keywords
ARQ; MIMO; AMC; OFDM;
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