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arXiv 1105.2283cs.ITmath.IT
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多址信道干扰点对点链路的确定性总容量

The Deterministic Sum Capacity of a Multiple Access Channel Interfering with a Point to Point Link

Jörg Bühler, Gerhard Wunder

摘要:

本文利用线性确定性近似模型研究了两用户多址信道与点对点链路之间的相互干扰,这代表了蜂窝系统的基本结构。我们推导出可实现的和速率的外界,并构造实现外界的编码方案。对于大的参数范围,和容量等于通过使多址信道中的较弱用户静默而获得的干扰信道的和容量。对于其他干扰配置,可以使用干扰对准来增加总速率,干扰对准利用了多址信道中用户的信道增益差。从这些结果中,推导出高斯对应的广义自由度的下界。

英文摘要:

In this paper, we use the linear deterministic approximation model to study a two user multiple access channel mutually interfering with a point to point link, which represents a basic setup of a cellular system. We derive outer bounds on the achievable sum rate and construct coding schemes achieving the outer bounds. For a large parameter range, the sum capacity is identical to the sum capacity of the interference channel obtained by silencing the weaker user in the multiple access channel. For other interference configurations, the sum rate can be increased using interference alignment, which exploits the channel gain difference of the users in the multiple access channel. From these results, lower bounds on the generalized degrees of freedom for the Gaussian counterpart are derived.

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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