The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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Bandwidth-Efficient Transmission Protocol for Cooperative MIMO: Design and Analysis

분산 다중 안테나 기반의 상호 협력 통신을 위한 전송 프로토콜의 설계 및 분석

  • 류현석 (고려대학교 전파공학과 무선정보시스템공학 연구실) ;
  • 강충구 (한국통신학회)
  • Published : 2008.04.30
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Abstract

In this paper, we propose two different types of cooperative transmission protocols, referred to as spatial multiplexing with receive diversity (SMRD), that are bandwidth-efficient. We show that the BER performance can be significantly improved with a proper design of SMRD protocol under the AF (Amplify-and-Forward) and the DF (Decode-and-Forward) modes of relaying, when there is no interference among all symbols transmitted in the same time slot. BER analysis and our simulation result show that the proposed transmission protocol achieves a significant gain over no-cooperation (direct transmission) without any bandwidth expansion.

분산 다중 안테나 기반의 상호협력 통신(cooperative MIMO)을 구현하기 위해 대역 효율성 있는 두 가지 방식의 상호협력 전송 프로토콜을 제안하고 비교 분석한다. 같은 시분할 슬롯에 전송된 모든 심볼들 간에 간섭이 없다고 가정한 경우에 대해 각 전송 프로토콜의 BER 성능을 AF (Amplify-and-Forward)와 DF (Decode-and-Forward) 방식에서 각각 분석한다. 수학적 분석과 모의실험 결과를 통해 제안한 전송 방식이 직접 전송 방식(direct transmission)에 비해 대역폭을 추가로 사용하지 않고 많은 이득이 있음을 보여준다.

Keywords

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