Convergence Analysis for Channel-coded Physical Layer Network Coding in Gaussian Two-way Relay Channels

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Conference Proceeding
Proceedings of the International Symposium on Wireless Communication Systems, 2012
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This paper considers an irregular repeat-accumulate (IRA) coded physical layer network coding scheme in a Gaussian two-way relay channel. We address the convergence behavior of the iterative receiver of the channel coded PNC at the relay. The proposed method is based on a non-trivial extension of the extrinsic information transfer (EXIT) chart analysis to the PNC scheme with superimposed ternary signal. We develop a new method to model the a priori information for the component decoders in the PNC scheme. This proposed method enables the convergence analysis and thus facilitates the design of channel-coded PNC schemes.
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