비직교 복호 후 전달 협력통신에서의 최적 송신파워 분할

Abstract

In this paper, a usage of splitting source-node power is proposed for a two-phase decode-and-forward relaying system. In the proposed usage, the limited source power is divided into two parts that are used in the first and the second phase, respectively. Unlike conventional relaying methods, the source again in the second phase transmits its signal and, at the same time, the relay forwards the signal received at the first phase. With numerical investigation, the proposed power-splitting is shown to significantly reduce the outage probability compared with the conventional individual power allocation.