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arXiv 1210.0293cs.ITmath.IT
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反馈干扰对齐:两时隙内三用户的精确对齐

Feedback Interference Alignment: Exact Alignment for Three Users in Two Time Slots

Vasilis Ntranos, Viveck R. Cadambe, Bobak Nazer, Giuseppe Caire

摘要:

我们研究了三用户干扰信道,其中每个发射机具有来自其目标接收机的信号的本地反馈。我们表明,在重要的情况下,信道系数是静态的,精确的对齐可以实现两个时隙使用线性计划。这与不利用反馈的干扰信道形成对比,在干扰信道中,似乎需要无限数量的信道扩展或无限精度来进行精确对准。我们还证明,通过模拟,我们的计划显着优于分时,即使在有限的SNR。

英文摘要:

We study the three-user interference channel where each transmitter has local feedback of the signal from its targeted receiver. We show that in the important case where the channel coefficients are static, exact alignment can be achieved over two time slots using linear schemes. This is in contrast with the interference channel where no feedback is utilized, where it seems that either an infinite number of channel extensions or infinite precision is required for exact alignment. We also demonstrate, via simulations, that our scheme significantly outperforms time-sharing even at finite SNR.

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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