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학술대회 Enhanced MCS for Direct Relaying in Transparent RS of IEEE 802.16j
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채수창, 김영일
International Conference on Advanced Communication Technology (ICACT) 2008, pp.1070-1073
08MR3500, 멀티홉 WiBro용 relay mesh 통신 시스템 개발, 김영일
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.
KSP 제안 키워드
16 quadrature amplitude modulation(16QAM), Coding rate, Decode and forward, Frame delay, IEEE 802.16j, Link quality