摘要
窄带连续波是宽带接入网上行信道的典型干扰。为了研究此时的宽带接入网系统性能,推导了窄带连续波干扰的特征函数模型,并以此为依据,建立了系统模型,获得了基于窄带噪声的宽带接入网上行信道QPSK系统调制误码率(MER)与载噪比(C/N)的关系曲线,并对系统模型的MER仿真曲线进行了分析。为提高宽带接入网系统性能和排查干扰提供了有效的理论依据。
The narrow band continuous wave is the broadband access network upward channel＇ s model noise interference. In order to study this broadband access network system performance ,a narrow band continuous wave characteristics function model is derived. On that basis, system model is designed, and then the narrow -band noise broadband access network upward channel QPSK system modulation error rate （MER） and the carrier -to -noise ratio （C/N）logarithm relations curve is obtained. At last, system model of MER simulation curve is analyzed. These results provide effective theories for enhancing broadband access network system performance and troubleshooting interference.
出处
《电声技术》
2012年第7期40-42,共3页
Audio Engineering
关键词
窄带连续波干扰
调制误码率
系统仿真
narrow band continuous wave
modulation error rate
system simulation
