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arXiv 1004.4917cs.ITmath.ITmath.PR
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发送端状态已知的复合状态相关信道的容量

On the Capacity of Compound State-Dependent Channels with States Known at the Transmitter

Pablo Piantanida, Shlomo Shamai

摘要:

本文研究了仅在发送端具有非因果状态信息的复合状态相关信道的容量。推导出了这类信道容量的一个新的下界。这个界被证明是紧的特殊情况下的复合信道与随机退化组件,产生的容量的充分表征。具体的结果是来自复合高斯脏纸(GDP)通道。该模型由一个加性高斯白噪声(AWGN)信道被一个加性高斯干扰信号破坏,已知的发射机,其中的输入和状态信号的影响,其实现是未知的发射机的衰落系数。我们的界限被证明是紧的特定情况下。这些结果的应用出现在各种无线场景,如多播信道,认知无线电和干扰消除的问题。

英文摘要:

This paper investigates the capacity of compound state-dependent channels with non-causal state information available at only the transmitter. A new lower bound on the capacity of this class of channels is derived. This bound is shown to be tight for the special case of compound channels with stochastic degraded components, yielding the full characterization of the capacity. Specific results are derived for the compound Gaussian Dirty-Paper (GDP) channel. This model consists of an additive white Gaussian noise (AWGN) channel corrupted by an additive Gaussian interfering signal, known at the transmitter only, where the input and the state signals are affected by fading coefficients whose realizations are unknown at the transmitter. Our bounds are shown to be tight for specific cases. Applications of these results arise in a variety of wireless scenarios as multicast channels, cognitive radio and problems with interference cancellation.

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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