纠错增强与交错的直流自由码

Dadiso F. Musarurwa, K. Ouahada, H. C. Ferreira
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引用次数: 0

摘要

频谱整形码是一种特别设计的数字码,其字母可以产生预定的频谱包络。这意味着这些字母的信号能量将集中在给定频谱的预定范围内。以上述方式设计数字代码是为了在传输、多路复用或存储系统的设计中匹配特定的信道约束。在某些应用中,期望频谱整形码提供一些纠错能力或对错误具有增强的鲁棒性。这些错误可能在数字信息的传输、处理或存储过程中产生。本文提出了一种交织方法,在保持无直流码的频谱整形特性的同时,提高了无直流码对突发错误的鲁棒性。当将交错应用于编码通信系统时,会导致编码比特流的平均误码率(BER)的降低。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Error correction enhancement with interleaves for DC free codes
Spectral shaping codes are digital codes especially designed in such a manner that their alphabets give rise to predetermined frequency spectrum envelopes. This implies that the signal energy of these alphabets will be concentrated into a predetermined range of a given frequency spectrum. The design of digital codes in the above mentioned fashion is done in order to match specific channel constraints in the design of transmission, multiplexing or storage systems. In certain applications it is desirable that spectral shaping codes provide some error correction capability or that they possess an increased robustness to errors. These errors may be introduced during transmission, processing or storage of digital information. In this paper, an interleaving method is introduced to increase the robustness of DC free codes toward burst errors whilst maintaining the spectral shaping property of DC free codes. Interleaving when applied to a coded communication system results in a reduction in the mean bit error rate (BER) of coded bit streams.
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