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Zero-rate reliability of the exponential-server timing channel

机译:指数服务器定时通道的零速率可靠性

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We determine the reliability function of the exponential-server timing channel (ESTC) in the limit as the data rate approaches zero. The limit shows that at low rates, the ESTC is strictly more reliable than the Poisson channel without dark current, answering a question Arikan posed in these Transactions. The proof employs a distance metric over inputs to timing channels that parallels Euclidean and Hamming distance for conventional channels. A consequence of the proof is that bounded-distance decoding, with distance measured according to this metric, is exponentially optimum for the ESTC in the low-rate regime. We also prove the straight-line bound for the channel and a bound on the reliability of timing channels with general service distributions in the limit as the data rate approaches zero.
机译:当数据速率接近零时,我们确定极限中的指数服务器定时通道(ESTC)的可靠性函数。该限制表明,在低速率下,ESTC绝对比没有暗电流的Poisson通道更可靠,回答了这些事务中Arikan提出的问题。该证明对定时通道的输入采用距离度量,该度量与常规通道的欧几里德距离和汉明距离平行。证明的结果是,对于低速率状态下的ESTC,根据该度量测量的距离的有界距离解码是指数最佳的。当数据速率接近零时,我们还证明了信道的直线边界和一般服务分布在极限情况下定时信道的可靠性边界。

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