摘要
基于MATLAB6 .1平台 ,使用重点抽样 (ImportanceSampling)方法 ,对采用SCDMA体制的HFC上行信道抗汇聚噪声干扰的性能进行仿真。仿真中常用的Monte -Carlo方法由于受SCDMA系统巨大的计算量限制而不具有实用性。重点抽样技术是一种方差减少技术 ,它能显著地减少运算时间。SCDMA系统仿真在同样的仿真精度条件下 ,重点抽样与Monte -Carlo仿真相比 。
Based on MATLAB6.1, simulation of the noise resisting ability of the uplink of HFC(Hybrid Fiber Coax) network using SCDMA scheme is performed. The common simulation method is Monte -Carlo,which is time-wasting.So Importance Sampling simulation is used to reduce the time of simulation. Under the same condition, Importance Sampling simulation can reduce the time of simulation remarkably in comparison with Monte-Carlo simulation.
出处
《电讯技术》
北大核心
2002年第5期74-77,共4页
Telecommunication Engineering