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Compressed Relaying for Two-Way Relay Networks With Correlated Sources

机译:具有相关源的双向中继网络的压缩中继

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In this letter, a compressed relaying scheme via Huffman and physical-layer network coding (HPNC) is proposed for two-way relay networks with correlated sources (TWRN-CS). In the HPNC scheme, both sources first transmit the correlated raw source messages to the relay simultaneously. The relay performs physical-layer network coding (PNC) on the received symbols, compresses the PNC-coded symbols using Huffman coding, and broadcasts the compressed symbols to both source nodes. Then, each source decodes the other source's messages by using its own messages as side information. Compression rate and block error rate (BLER) of the proposed scheme are analyzed. Simulation results demonstrate that the HPNC scheme can effectively improve the network throughput, and meanwhile, achieve the superior BLER performance compared with the conventional non-compressed relaying scheme in TWRN-CS.
机译:在这封信中,提出了一种通过霍夫曼和物理层网络编码(HPNC)的压缩中继方案,用于具有相关源的双向中继网络(TWRN-CS)。在HPNC方案中,两个源首先同时将相关的原始源消息发送到中继。中继对接收到的符号执行物理层网络编码(PNC),使用霍夫曼编码对PNC编码的符号进行压缩,然后将压缩后的符号广播到两个源节点。然后,每个源都通过使用自己的消息作为辅助信息来解码另一个源的消息。分析了该方案的压缩率和误块率(BLER)。仿真结果表明,与TWRN-CS中传统的非压缩中继方案相比,HPNC方案可以有效地提高网络吞吐率,同时具有更高的BLER性能。

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