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Subcarrier mapping (SCM) is an efficient way to evidently improve the average end-to-end capacity in cooperative OFDM networks. However perfect channel knowledge is required, which leads to large feedback amount of channel state information (CSI). In this paper, the uplink scenario of multi-relay OFDM cooperative networks with subcarrier mapping scheme is considered. An opportunistic relaying strategy...
Relay transmission is an efficient solution to combat wireless channel fading and to increase system throughput in future board communication. In amplify-and-forward(AF) OFDM relay system, since the channel between the first hop (source-relay) and the second hop (relay-destination) varies independently, proper sub-carrier mapping (SCM) at the relay has been shown to improve the average end-to-end...
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