On Importance Sampling in Digital Communications - Part I: Fundamentals
On Importance Sampling in Digital Communications - Part I: Fundamentals
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数字通信中的重要性采样 - 第一部分：基础知识
DOI：
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发表时间：
1993
期刊：
影响因子：
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通讯作者：
K. Yao
中科院分区：
文献类型：
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作者：
Jyun;D. Lu;J. Sadowsky;K. Yao
讨论了一种基于事件模拟、条件重要抽样和高斯噪声输入渐近最优偏置相结合的仿真算法设计策略。该方法的实用性通过给出一个卫星信道模型的数值结果来说明，该模型包括上行和下行噪声源、行波管放大器（TWTA）非线性以及上行和下行滤波产生的码间干扰（ISI）。对各种仿真设计策略进行了综述和比较，并给出了非线性系统一般均值平移和方差标度偏置方案的一些优化结果。>
A simulation algorithm design strategy based on the combination of event simulation, conditional importance sampling, and asymptotically optimal biasing of Gaussian noise inputs is discussed. The utility of this approach is illustrated by presenting numerical results for a satellite channel model that includes uplink and downlink noise sources, a travelling-wave tube amplifier (TWTA) nonlinearity, and intersymbol interference (ISI) from both uplink and downlink filtering. An overview and comparison of various simulation design strategies and some results on the optimization of general mean translation and variance scaling biasing schemes for nonlinear systems are presented. >