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Sphere Packing Bound and Gilbert-Varshamov Bound for 6-Symbol Read Channels

机译:球形包装绑定和Gilbert-Varshamov绑定为6符号读取通道

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摘要

b-symbol read channel is a channel model proposed by Yaakobi et al. that b consecutive symbols are read at once. This channel model is generalization of symbol-pair read channel designed by Casssuto et al. Symbol-pair read channel is the special case of b-symbol read channel where b = 2 and sphere packing bound, Gilbert-Varshamov (G-V) bound, and asymptotic G-V bound for symbol-pair read channel was proved by Cassuto et al. In this article, we derive sphere packing bound, G-V bound, and asymptotic G-V bound for b-symbol read channel where b>=1. As a result of the analysis of asymptotic b-symbol G-V bounds, the existence of b-symbol codes with strictly higher rates is shown as 6 becomes larger.
机译:B符号读取通道是Yaakobi等人提出的频道模型。 该B连续符号立即读取。 该频道模型是由Casssuto等人设计的符号对读取信道的泛化。 符号对读取通道是B符号读取通道的特殊情况,其中Cassuto等人证明了B = 2和球形打包绑定,符合符号对读取信道的偏心和渐近G-V的绑定和渐近G-V。 在本文中,我们推出了用于B符号读取信道的球体包装绑定,G-V绑定和渐近G-V,其中B> = 1。 由于渐近B符号G-V界的分析,具有严格较高速率的B符号代码的存在显示为6变大。

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