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Kalman Filter-based Channel Estimation for Amplify and Forward Relay Communications

Lamahewa, Tharaka; Sadeghi, Parastoo; Zhou, Xiangyun


We propose an autoregressive model for the combined amplify and forward time-varying relay channel and derive a causal iterative channel estimation method using Kalman filter. This formulation enables us to study and compare two widely used pilot transmission strategies in terms of the channel estimation errors. We provide a single-letter formula for the power allocation between the source and relay to achieve near optimal bit error rate (BER) performance in dual-hop communications. For...[Show more]

CollectionsANU Research Publications
Type: Conference paper
Source: Proceedings of the Asilomar Conference on Signals, Systems and Computers 2009
DOI: 10.1109/ACSSC.2009.5470105


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