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Relaying for Multiuser Networks in the Absence of Codebook Information

机译：缺少密码本信息的多用户网络中继

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摘要

This paper considers relay assisted transmission for multiuser networks when the relay has no access to the codebooks used by the transmitters. The relay is called oblivious for this reason. Of particular interest is the generalized compress-and-forward (GCF) strategy, where the destinations jointly decode the compression indices and the transmitted messages, and their optimality in this setting. The relay-to-destination links are assumed to be out-of-band with finite capacity. Two models are investigated: 1) the multiple access relay channel (MARC) and 2) the interference relay channel (IFRC). For the MARC with an oblivious relay, a new outerbound is derived and it is shown to be tight by means of achievability of the capacity region using GCF scheme. For the IFRC with an oblivious relay, a new strong interference condition is established, under which the capacity region is found by deriving a new outerbound and showing that it is achievable using GCF scheme. The result is further extended to establish the capacity region of M-user MARC with an oblivious relay, and multicast networks containing M sources and K destinations with an oblivious relay.
机译：当中继无法访问发射机使用的码本时，本文考虑了多用户网络的中继辅助传输。由于这个原因，该继电器被称为“遗忘的”。特别令人感兴趣的是广义压缩转发（GCF）策略，其中目的地共同解码压缩索引和传输的消息，以及它们在此设置下的最优性。中继到目标的链路被假定为具有有限容量的带外。研究了两种模型：1）多路访问中继信道（MARC）和2）干扰中继信道（IFRC）。对于具有中继继电器的MARC，导出了一个新的外部边界，并通过使用GCF方案实现了容量区域的可实现性，证明了该边界是紧密的。对于带有遗漏中继的IFRC，建立了一个新的强干扰条件，在该条件下，通过推导新的外部边界并表明使用GCF方案可以实现，找到了容量区域。结果进一步得到扩展，以建立具有隐蔽中继的M用户MARC的容量区域，并通过隐蔽中继建立包含M个源和K个目的地的多播网络。

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