arXivDaily arXiv每日学术速递 周一至周五更新
arXiv cs/0601110cs.ITmath.IT
收藏

相关干扰下多用户信道的互信息博弈

Mutual Information Games in Multi-user Channels with Correlated Jamming

Shabnam Shafiee, Sennur Ulukus

摘要:

以信道的输入/输出互信息为目标函数,研究了两个用户和一个干扰机在有衰落和无衰落的AWGN信道中进行非合作零和博弈时的行为.我们假设干扰机可以窃听信道,并可以使用所获得的信息来执行相关干扰。根据各种假设的信道特性,并在用户和干扰机的信息的程度,我们显示的存在,否则不存在的同时为用户和干扰机的最优策略集。在所有的情况下,信道是非衰落的,我们表明,游戏有一个解决方案,和最佳的策略是高斯信号的用户和线性干扰的干扰。在衰落信道中,我们设想每个球员的策略作为一个功率分配函数的信道状态,连同在每个信道状态的信令策略。我们减少了游戏的解决方案的一组功率分配函数的球员,并表明,当干扰机是不相关的,游戏有一个解决方案,但当干扰机是相关的,一组同时最优的功率分配函数的用户和干扰机并不总是存在。在这种情况下,我们描述了最大最小用户功率分配策略和相应的干扰功率分配策略。

英文摘要:

We investigate the behavior of two users and one jammer in an AWGN channel with and without fading when they participate in a non-cooperative zero-sum game, with the channel's input/output mutual information as the objective function. We assume that the jammer can eavesdrop the channel and can use the information obtained to perform correlated jamming. Under various assumptions on the channel characteristics, and the extent of information available at the users and the jammer, we show the existence, or otherwise non-existence of a simultaneously optimal set of strategies for the users and the jammer. In all the cases where the channel is non-fading, we show that the game has a solution, and the optimal strategies are Gaussian signalling for the users and linear jamming for the jammer. In fading channels, we envision each player's strategy as a power allocation function over the channel states, together with the signalling strategies at each channel state. We reduce the game solution to a set of power allocation functions for the players and show that when the jammer is uncorrelated, the game has a solution, but when the jammer is correlated, a set of simultaneously optimal power allocation functions for the users and the jammer does not always exist. In this case, we characterize the max-min user power allocation strategies and the corresponding jammer power allocation strategy.

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。

↑