并行组合扩频通信系统的自适应变速率数据传输模型  

Adaptive variable rate data transmission model for parallel combinatory spread spectrum communication systems

作　　者：高维珉 张永翼 苏爱东 GAO Weimin;ZHANG Yongyi;SU Aidong(Air Force Communication NCO Academy,Dalian 116600,China)

机构地区：[1]空军通信士官学校,辽宁大连116600

出　　处：《现代电子技术》2020年第13期32-35,39,共5页Modern Electronics Technique

基　　金：辽宁省科技厅博士科研启动基金项目(20170520122)。

摘　　要：针对并行组合扩频系统定速传输速率低的问题,文中提出一种结合信道估计技术的自适应变速率数据传输模型。在通信过程中当信道状况发生改变时,通过信道估计反馈回来的信噪比改变选择的PN码序列数r,从而实现控制数据传输速率。仿真结果表明,在大信噪比的情况下选择大r值,小信噪比的时候选择小的r值进行通信,可以保证误码率在10-3以下,同时提高了系统的平均数据传输速率。An adaptive variable rate data transmission model is proposed in this paper to improve the constant speed transmission rate of the parallel combinatory spread spectrum(PCSS)communication system,in which the channel estimation technology is combined with.When the channel condition changes during communication,the selected number of PN code sequences r is changed according to the signal⁃to⁃noise ratio fed back through the channel estimation,so as to realize the data transmission rate control.The simulation results show that the selection of large r value in the case of large SNR,and small r value in the case of small SNR for communication can ensure that the bit error rate is below 10-3,which can also improve the average data transmission rate of the system.

关 键 词：并行组合扩频系统 数据传输模型 变速率传输 信道估计 数据传输控制 误码率降低 

分 类 号：TN929.5-34[电子电信—通信与信息系统]