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In this paper, we propose Low-density Parity-check (LDPC) codes for two-way relay channels, where two sources communicate with each other through a relay. At the relay, a simpler interference cancellation joint decoder decodes for the multiple access phase of two-way relay channels. Then, the relay codeword is encoded from two decoded source codewords with LDPC codes. At source, a sub-optimal belief...
In the classical compress-and-forward relay scheme developed by (Cover and El Gamal, 1979), the decoding process operates in a successive way: the destination first decodes the compressed observation of the relay, and then decodes the original message of the source. Recently, two modified compressand- forward relay schemes were proposed, and in both of them, the destination jointly decodes the compressed...
We propose an achievable rate region for the two- way two-relay channel using decode-and-forward block Markovian coding. A previous attempt to obtain an achievable region for this network encountered a fundamental deadlock problem in which each relay needed to decode before the other to enable mutual assistance. In this paper, the deadlock is resolved by introducing an additional constraint that ensures...
With the technique of random binning, the idea of network coding is extended and applied to multiuser channel coding problems. Specially, a two-way relay channel and a three-way broadcast channel are considered in this paper, and the corresponding achievable rate regions are determined.
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