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arXiv 2102.02730cs.ITcs.LGcs.SYeess.SPeess.SYmath.ITmath.OC
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并行ACGN信道的反馈容量与卡尔曼滤波器:带反馈的功率分配

Feedback Capacity of Parallel ACGN Channels and Kalman Filter: Power Allocation with Feedback

New York University(纽约大学)

Song Fang, Quanyan Zhu

摘要:

在本文中,我们涉及的反馈能力的并行加性高斯有色噪声(ACGN)信道的一个变种的卡尔曼滤波器。通过这样做,我们得到这样的信道的反馈容量的下限,以及相应的反馈(递归)编码方案,这基本上是反馈的功率分配政策,以实现的界限。结果被认为是减少到现有的下界的情况下,一个单一的ACGN反馈信道,而当它涉及到并行加性高斯白噪声(AWGN)信道的反馈,递归编码方案减少到反馈“注水”功率分配政策。

英文摘要:

In this paper, we relate the feedback capacity of parallel additive colored Gaussian noise (ACGN) channels to a variant of the Kalman filter. By doing so, we obtain lower bounds on the feedback capacity of such channels, as well as the corresponding feedback (recursive) coding schemes, which are essentially power allocation policies with feedback, to achieve the bounds. The results are seen to reduce to existing lower bounds in the case of a single ACGN feedback channel, whereas when it comes to parallel additive white Gaussian noise (AWGN) channels with feedback, the recursive coding scheme reduces to a feedback "water-filling" power allocation policy.

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