Concurrent coding is an unconventional encoding technique that simultaneously provides protection against noise, burst errors and interference. This simple-to-understand concept is investigated by distinguishing 2 types of code, open and closed, with the majority of the investigation concentrating on closed codes. Concurrent coding is shown to possess an inherent method of synchronisation thus requiring no additional synchronisation signals to be added. This enables an isolated codeword transmission to be synchronised and decoded in the presence of noise and burst errors. Comparisons are made with the spread spectrum technique CDMA. With a like-for-like comparison concurrent coding performs comparably against random noise effects, performs better against burst errors and is far superior in terms of transmitted energy efficiency
翻译:同步编码是一种非常规的编码技术,它同时提供保护,防止噪音、爆破错误和干扰。这一简单到理解的概念通过区分两种不同的代码来调查,两种代码是开放的和封闭的,大部分调查集中于封闭的代码。同时编码被证明具有内在的同步方法,因此不需要增加额外的同步信号。这样就能够在出现噪音和爆破错误的情况下同步和解码单独的编码传输。与分散频谱技术CDMA进行了比较。使用类似比较,同时编码与随机噪音效应相对应,对爆破错误表现更好,在传输能效方面优得多。