文件名称：Simulation models with correct statistical properties
文件大小：736KB
文件格式：PDF
更新时间：2017-09-19 04:49:54
瑞利信道
In this paper, new sum-of-sinusoids statistical sim-ulation models are proposed for Rayleigh fading channels. These new models employ random path gain, random initial phase, and conditional random Doppler frequency for all individual sinusoids. It is shown that the autocorrelations and cross correlations of the quadrature components, and the autocorrelation of the complex envelope of the new simulators match the desired ones exactly, even if the number of sinusoids is as small as a single-digit integer. More-over, the probability density functions of the envelope and phase, the level crossing rate, the average fade duration, and the auto-correlation of the squared fading envelope which contains fourth-order statistics of the new simulators, asymptotically approach the correct ones as the number of sinusoids approaches infinity, while good convergence is achieved even when the number of sinusoids is as small as eight. The new simulators can be directly used to gen-erate multiple uncorrelated fading waveforms for frequency selec-tive fading channels, multiple-input multiple-output channels, and diversity combining scenarios. Statistical properties of one of the new simulators are evaluated by numerical results, finding good agreements