Experimental Investigation of Cooperative Schemes on a Real-Time DSP-Based Testbed

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Executive Summary

Experimental results on the well-known cooperating relaying schemes, Amplify-and-Forward (AF), Detect-and-Forward (DF), Cooperative Maximum Ratio Combining (CMRC), and Distributed Space-Time Coding (DSTC), are presented in this paper. A novel relaying scheme named "Selection Relaying" (SR), in which one of two relays are selected base on path-loss, is also tested. For all schemes except AF receive antenna diversity is as an option which can be switched on or off. For DF and DSTC a feature "Selective" where the relay only forwards frames with a receive SNR above 6 dB is introduced.

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