摘要
针对无线信道中可靠通信的要求,在现有的正交扩频复合码的构造方法基础上,给出了一种新的正交扩频码复合方式,尝试对复合码基于一定准则进行筛选以改善同步和误码性能,并通过仿真分析对筛选后复合码的相关特性及其在变参信道最低限度通信系统中的性能进行了验证。仿真结果表明,该复合序列具有相关特性好,生成简单,设计灵活,保密性好等优点。由于最佳码字数量多,进行优选后可进一步提高系统性能。
In view of wireless channel in reliable communication request,the structural method of existing orthogonal spread spectrum multiple PN code has been summarized and a compound way has been given.Based on certain criterion,the multiple PN code is attempted to improve the synchronization and the bit error performance.Through simulation analysis,the correlation levels of the multiple PN code through screening and the performance of very low bit rate communication system in variable parameter channel has been confirmed.
出处
《桂林电子科技大学学报》
2011年第6期434-438,共5页
Journal of Guilin University of Electronic Technology
基金
通信网信息传输与分发技术重点实验室开发课题(ITD-U10009)
关键词
变参信道
正交扩频
复合码
相关特性
最低限度通信
variable parameter channel
orthogonal spread spectrum
multiple PN code
correlation levels
very low bit rate communication
