On lower bounding the information capacity of amplify and forward wireless relay channels with channel estimation errors
Lamahewa, Tharaka; Sadeghi, Parastoo; Zhou, Xiangyun
We formulate a capacity lower bound for the dual-hop wireless relay channel which employs an amplify-and-forward (AF) protocol at the relay node. In AF relaying, even when the fading channel in both hops is complex Gaussian distributed, the overall dual-hop channel is non-Gaussian. We highlight that there is a fundamental difference between Gaussian and non-Gaussian channels in terms of deriving their capacity lower bound. Specifically for non-Gaussian channels, the channel estimation error...[Show more]
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|Source:||IEEE Transactions on Wireless Communications|
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