Power Allocation for a Hybrid Decode–Amplify–Forward Cooperative Communication System With Two Source–Destination Pairs Under Outage Probability Constraint


We tend to develop a two-source-destination-pair cooperative communication theme that can achieve multiuser diversity and cooperative diversity. During this scheme, we tend to use hybrid decode-amplify-forward (HDAF) protocol to boost system performance. From practical purpose of read, HDAF protocol performs higher than amplify-and-forward and decode-and-forward protocols by combining the deserves of both. Meanwhile, we tend to derive a closed-form expression of outage likelihood related to HDAF protocol analyzed. Primarily based on outage chance constraint, we tend to investigate optimal power allocation that minimizes the full power. Numerical analysis is used to substantiate the accuracy of the derived theory and to examine the performance of our proposed cooperative scheme, particularly as we tend to analyze power savings in using optimal power allocation compared with equal power allocation, that is often assumed in previous studies. It's shown that vital power savings can be obtained by using the proposed power optimization methodology.

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