摘要
主要讨论扩频系统中基于gold码的快速捕获方法。捕获是扩频系统中极为重要的一环,而传统的伪码捕获算法需要的资源多,计算的时间长,所需要设计的滤波器阶数高。本文采用将扩展复制重叠算法应用于伪码捕获上的方法,结合性能优良的gold码,gold码不仅具有良好的相关性,易于产生等优点,而且相比于m序列,其可用的码的条数又远远大于m序列,所以十分适合用于扩频系统。最终得到更为快速的捕获方法,且分析了其可行性并提出了一些优化改进。
This paper mainly discusses the fast acquisition method based on gold codes in spread spectrum system. Acquisition of codes is very important of spread spectrum system. The traditional codes acquisition algorithm needs many resources, long computing time, and the filter of higher order. This paper applies extend replica folding acquisition search technique to acquisition of codes, combined with gold codes of excellent performance. Gold codes have many advantages, for example, correlation and it＇s easy to produce, compared to the m sequence, the number of gold codes is far greater than the m sequence. So it＇s very suitable for spread spectrum system. Finally we get more fast acquisition method, than, analysis the feasibility and proposes some optimization and improvement.
出处
《电子设计工程》
2015年第2期167-169,172,共4页
Electronic Design Engineering
关键词
GOLD码
扩展复制重叠
捕获
同步
gold colds
extended replica folding
acquisition
synchronization
