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arXiv 1001.2218cs.ITmath.IT
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具有源端非因果状态信息的中继信道容量的界

Bounds on the Capacity of the Relay Channel with Noncausal State Information at Source

Abdellatif Zaidi, Shlomo Shamai, Pablo Piantanida, Luc Vandendorpe

摘要:

我们考虑一个三端状态依赖的中继信道,信道状态仅在源处非因果地可用。这样的模型可能对认知框架中的节点协作感兴趣,即,涉及认知和非认知无线电的协作信号传输。我们研究了这种通信模型的容量。这种设置中的一个主要问题是由中继不知道信道状态引起的。在离散无记忆(DM)的情况下,我们建立信道容量的下限。对于高斯的情况下,我们推导出上下限和信道容量。上界严格优于割集上界。我们表明,发达国家的下限之一接近上限,渐近,在一定范围内的利率。

英文摘要:

We consider a three-terminal state-dependent relay channel with the channel state available non-causally at only the source. Such a model may be of interest for node cooperation in the framework of cognition, i.e., collaborative signal transmission involving cognitive and non-cognitive radios. We study the capacity of this communication model. One principal problem in this setup is caused by the relay's not knowing the channel state. In the discrete memoryless (DM) case, we establish lower bounds on channel capacity. For the Gaussian case, we derive lower and upper bounds on the channel capacity. The upper bound is strictly better than the cut-set upper bound. We show that one of the developed lower bounds comes close to the upper bound, asymptotically, for certain ranges of rates.

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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