Distributed IDM-STC versus OFDM-CDD in Two-Hop Relay-Networks
نویسندگان
چکیده
This paper investigates the performance of two diversity techniques for relay networks with the Amplify-Forward (AF) protocol. A distributed Interleave-Division-Multiplexing Space-Time Code (IDM-STC) is compared with Cyclic Delay Diversity (CDD) in an OFDM based system. The aim of this paper is to figure out advantages and drawbacks of these two quite different approaches for various scenarios. It is shown that IDM-STC is superior for non-frequency-selective channels but OFDM-CDD improves compared to IDM-STC for increasing channel memory, especially for stronger codes.
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