标题： 关于具有状态信息和反馈的多址信道的容量 显示英文标题

标题： On the Capacity of Multiple Access Channels with State Information and Feedback

摘要： 在本文中，分析了在以下情况下具有信道状态的多址接入信道（MAC）：a）信道状态非因果地被发送器已知，b）接收器到发送器有完美的因果反馈。 对于离散无记忆的MAC，找到了一个可实现区域和一个外部界限，扩展了现有结果，结合了具有状态的MAC和具有反馈的MAC两个独立领域的思想。 尽管此可实现区域在一般情况下不与外部界限匹配，但识别出了它们相等的特殊情况。 在高斯MAC的情况下，通过使用脏纸编码和Schalkwijk-Kailath、Ozarow和Merhav-Weissman方案的推广相结合，找到了一个专门的可实现区域，并发现该区域达到容量。 具体而言，证明了对发送器非因果已知的加性高斯干扰不会导致具有反馈的高斯MAC容量损失。 显示英文摘要

摘要： In this paper, the multiple access channel (MAC) with channel state is analyzed in a scenario where a) the channel state is known non-causally to the transmitters and b) there is perfect causal feedback from the receiver to the transmitters. An achievable region and an outer bound are found for a discrete memoryless MAC that extend existing results, bringing together ideas from the two separate domains of MAC with state and MAC with feedback. Although this achievable region does not match the outer bound in general, special cases where they meet are identified. In the case of a Gaussian MAC, a specialized achievable region is found by using a combination of dirty paper coding and a generalization of the Schalkwijk-Kailath, Ozarow and Merhav-Weissman schemes, and this region is found to be capacity achieving. Specifically, it is shown that additive Gaussian interference that is known non-causally to the transmitter causes no loss in capacity for the Gaussian MAC with feedback.