Maximum SNR Detection for Selection-Relaying Cooperative System
Guan-Heng Chen, Shih-Fu Hsieh · Hokkaido University Collection of Scholarly and Academic Papers (Hokkaido University) · 2009
The major issue of the cooperative system is how to design a system scheme whose performance is as good as that of a ML receiver at the Destination node. Here, we propose to use a threshold-selection relay and a correction weighting at the destination. With this proposed scheme, we could improve the performance during small threshold value utilization. The theoretical BER of the proposed scheme with BPSK signals is derived and shown to be tight to the simulated results. We also use the high SNR approximation to simplify the theoretical BER from which the diversity order of the proposed scheme is shown to be 1.5~2.