CVSD编码的语音质量受跳频速率影响研究  

Research on Effect of FH Rate on Speech Signal's Quality Based on CVSD Coding

作　　者：黄小刚[1] 曾现巍[2] 陈建忠[2] 

机构地区：[1]解放军理工大学通信工程学院,江苏南京210007 [2]总参谋部第六十三研究所,江苏南京210007

出　　处：《无线电通信技术》2007年第5期20-22,共3页Radio Communications Technology

摘　　要：针对采用CVSD编码的数字跳频系统的抗干扰能力受跳频速率的影响进行了研究。给出了CVSD编码的基本原理以及慢跳频系统数据传输模型;提出了语音质量衡量准则和跳频系统等效基带仿真方法,同时指出了CVSD编码参数的优化选取方式;通过仿真具体分析了跳频速率对数字跳频系统抗部分频带噪声干扰能力的影响,并得出了结论。This paper has researched the effect of hop-rate in the FH anti-jamming system based on CVSD coding.It presents the principle of CVSD coding and the model of SFH,suggests the rule for measuring speech signal＇s quality and the method of how to simulate the FH system with baseband model,and points out the optimized parameters selecting of CVSD coding.In the end,the paper analyses the performance of FH system with different Frequency-Hopping rates on the part-band-noise jamming channel,and makes a conclusion.

关 键 词：跳频速率 语音 CVSD 恶化量 仿真 

分 类 号：TN914.4[电子电信—通信与信息系统]