A high-rate matched spectral null code

被引：4

作者：

Noda, M ^{[1
]}

机构：

[1] Sony Corp, Adv Dev Labs, Minato Ku, Tokyo 108, Japan

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1998年 / 34卷 / 04期

关键词：

matched spectral null code; quasi-catastrophic; trellis; partial response;

D O I：

10.1109/20.706752

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A new method to construct a sliding-block matched spectral null (MSN) code with a high code rate above 0.8 for the partial response class IV (PR4) channel is described. The method partially prunes a running digital sum (RDS) trellis in a novel manner, and is approximately 1.5 times as efficient in generating available codewords compared to a conventional RDS pruning method when their digital sum variations (DSV) are the same. Simulated results with Lorentzian channels showed that practical codes with rates of 12/14 and 24/27 constructed using this method had coding gains of approximately 1 dB and 1.5 dB, respectively, in their signal-to-noise ratio (SNR) compared with the conventional code with a rate of 12/15 at a user bit density of 2.

引用

页码：1946 / 1948

页数：3

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