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arXiv 1202.4425cs.ITmath.IT
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具有正交分量和结构化干扰源已知的中继信道

Relay Channel with Orthogonal Components and Structured Interference Known at the Source

Kagan Bakanoglu, Elza Erkip, Osvaldo Simeone, Sholomo Shamai

摘要:

研究了中继信道中正交分量受干扰信号影响的情况,该干扰信号仅在源处非因果可用。干扰信号具有这样的结构,即它是由与其自身目的地通信的另一发射机产生的。此外,干扰方不愿意调整其通信策略以使干扰最小化。源可以例如通过利用发送方的链路上的HARQ重传来获取发送方的信号的知识。然后,源可以利用中继站不仅用于传送其自己的消息,而且用于通过向中继站通知干扰信号来在目的地处进行协作干扰减轻。建议的传输策略是基于部分解码转发(PDF)中继和利用干扰结构。离散无记忆模型,高斯和莱斯衰落信道的可扩展计划。此外,在一些特殊的情况下,最优策略被确定。最后,数值结果带来的优势,利用干扰结构的源,中继或目的地的洞察。

英文摘要:

A relay channel with orthogonal components that is affected by an interference signal that is noncausally available only at the source is studied. The interference signal has structure in that it is produced by another transmitter communicating with its own destination. Moreover, the interferer is not willing to adjust its communication strategy to minimize the interference. Knowledge of the interferer's signal may be acquired by the source, for instance, by exploiting HARQ retransmissions on the interferer's link. The source can then utilize the relay not only for communicating its own message, but also for cooperative interference mitigation at the destination by informing the relay about the interference signal. Proposed transmission strategies are based on partial decode-and-forward (PDF) relaying and leverage the interference structure. Achievable schemes are derived for discrete memoryless models, Gaussian and Ricean fading channels. Furthermore, optimal strategies are identified in some special cases. Finally, numerical results bring insight into the advantages of utilizing the interference structure at the source, relay or destination.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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