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학술대회 IEEE 802.16j의 투명 모드의 중계기에서 직접 중계 방식
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저자
채수창, 김영일
발행일
200804
출처
통신 정보 합동 학술 대회 (JCCI) 2008, pp.1-5
협약과제
08MR3500, 멀티홉 WiBro용 relay mesh 통신 시스템 개발, 김영일
초록
We propose an enhanced MCS for demodulation-and-forward scheme in transparent RS. The demodulation-and-forward scheme only demodulates and modulates the received signal to relay in symbol-by-symbol manner. In this scheme, RS can relay the received signal within one frame period. However, RS could suffer from frame delay when it adopts decode and forward scheme. In addition, we think that MR-BS is required to have enhanced MCS for demodulation-and-forward scheme instead of the MCS in existing specifications of 802.16e. With making use of coding rate 2/3 and 5/6 for both QPSK and 16-QAM, which is absent between BS and MS link, the link quality between BS and RS can be enhanced by using lower modulation orders. And also, we want to suggest another encoding slot concatenation and its concatenation rule and parameters and its simulations results will show merits of enhanced MCS than existing MCS performances.
키워드
Direct relay, M&F(demodulation-and-forwarding), MMR(Mobile Multi-hop Relay), RS(Relay Station)
KSP 제안 키워드
16 quadrature amplitude modulation(16QAM), Coding rate, Decode and forward, Frame delay, IEEE 802.1, Link quality, Relay Station, mobile multi-hop relay(MMR)