摘要
脉冲干扰严重影响实际通信过程中宽带接入网上行信道的系统性能。基于特征函数理论,推导脉冲干扰的数学模型,并模拟实现脉冲干扰对宽带接入网上行信道的干扰特性。设计和构造宽带接入网上行信道的通信系统平台。得出脉冲干扰下的宽带接入网上行信道16QAM系统的调制误码率(MER)与载噪比(C/N)关系的仿真曲线。仿真结果验证了设计的正确性,同时表明脉冲噪声对系统的影响受到脉冲个数和幅度的制约。
The impulsive interference imposes great influence on the broadband access network upstream channel system performance in the actual communication process. A mathematical model of impulsive interference is derived, and the interference characteristics of the impulsive interference on the broadband access network upstream channel are simulated based on the characteristic function theory. The communication system platform of broadband access network upstream channel is designed and constructed. The logarithmic curve of modulation error rate （MER） and the carrier-to-noise ratio（C/N） is obtained under a 16QAM system based on the impact of impulsive noise on the upstream channel of broadband access network. Simulation results demonstrate the correctness of the design. The impact of impulsive noise on the system is restricted by pulse number and amplitude.
出处
《电路与系统学报》
CSCD
北大核心
2012年第2期38-42,共5页
Journal of Circuits and Systems
关键词
宽带接入网
脉冲干扰
调制误码率
系统仿真
broadband access network
impulsive interference
modulation error rate
system simulation
