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arXiv 1902.00593cs.ITmath.IT
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BSC上无噪声反馈顺序传输的块长性能

Finite-Blocklength Performance of Sequential Transmission over BSC with Noiseless Feedback

Hengjie Yang, Richard D. Wesel

摘要:

在本文中,我们考虑的问题,顺序传输的二进制对称信道(BSC)与充分,无噪声反馈。Naghshvar等人提出了一种单相编码方案,我们称之为足够小的差异(SED)编码器,它可以实现对称二进制输入信道的容量和Burnashev的最佳误差指数。他们还提供了平均块长度的非渐近上界,这意味着速率的可扩展性界。然而,与SED编码器的模拟性能相比,它们的可扩展性界限是松散的,甚至低于Polyanskiy的可扩展性界限的系统限于停止反馈。本文显着收紧的可扩展性界限,利用马尔可夫分析,利用下鞅和马尔可夫性质的传输消息。我们的新的非渐近下界上可实现的速率高于Polyanskiy的界限,是接近的实际性能的SED编码器的BSC。

英文摘要:

In this paper, we consider the problem of sequential transmission over the binary symmetric channel (BSC) with full, noiseless feedback. Naghshvar et al. proposed a one-phase encoding scheme, for which we refer to as the small-enough difference (SED) encoder, which can achieve capacity and Burnashev's optimal error exponent for symmetric binary-input channels. They also provided a non-asymptotic upper bound on the average blocklength, which implies an achievability bound on rates. However, their achievability bound is loose compared to the simulated performance of SED encoder, and even lies beneath Polyanskiy's achievability bound of a system limited to stop feedback. This paper significantly tightens the achievability bound by using a Markovian analysis that leverages both the submartingale and Markov properties of the transmitted message. Our new non-asymptotic lower bound on achievable rate lies above Polyanskiy's bound and is close to the actual performance of the SED encoder over the BSC.

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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