arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 0707.1008cs.ITmath.IT
收藏

论认知干扰网络

On Cognitive Interference Networks

Amos Lapidoth, Shlomo Shamai, Michele A. Wigger

摘要:

本文研究了具有相等数量发射机和接收机的多用户干扰网络的和速率容量的高功率渐近行为。我们假设每个发射机都知道它希望传达给其相应接收机的消息,也知道其他发射机的子集希望发送的消息。假设接收器无法以任何方式合作,因此它们必须仅根据接收到的信号做出决定。我们专注于网络的前日志,这是定义为限制比率的总和速率容量的一半对数的发送功率。我们提出了上界和下界的网络的前日志。下限是基于一个线性部分消除方案,需要线性变换高斯码本,以便消除在接收机的子集中的干扰。在别名中,边界给出了导致完整前日志的网络和边信息设置的完整表征,即,在等于发射机(和接收机)的数量的前对数中,以及在其前对数等于完整前对数减1的网络的完整表征中。它们还充分表征了网络,其中只有当每个发射机知道所有用户的消息时才能实现完整的预日志,即,当边信息是“满的”时。

英文摘要:

We study the high-power asymptotic behavior of the sum-rate capacity of multi-user interference networks with an equal number of transmitters and receivers. We assume that each transmitter is cognizant of the message it wishes to convey to its corresponding receiver and also of the messages that a subset of the other transmitters wish to send. The receivers are assumed not to be able to cooperate in any way so that they must base their decision on the signal they receive only. We focus on the network's pre-log, which is defined as the limiting ratio of the sum-rate capacity to half the logarithm of the transmitted power. We present both upper and lower bounds on the network's pre-log. The lower bounds are based on a linear partial-cancellation scheme which entails linearly transforming Gaussian codebooks so as to eliminate the interference in a subset of the receivers. Inter alias, the bounds give a complete characterization of the networks and side-information settings that result in a full pre-log, i.e., in a pre-log that is equal to the number of transmitters (and receivers) as well as a complete characterization of networks whose pre-log is equal to the full pre-log minus one. They also fully characterize networks where the full pre-log can only be achieved if each transmitter knows the messages of all users, i.e., when the side-information is "full".

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。

↑