Investigation between Signal Size and Accuracy of a Signal-separation Based on Channel Estimation
Meng Lumin · Modern Electronics Technique · 2009
Signal size usually dominates the speed and precision of a signal-separation practice.In order to balance between a reasonable speed and precision,the determination of a proper concerned signal size is usually a problem.A signal separation method through channel-parameter estimation based on correlation analysis and a ratio concept of signal size to one signal period are introduced.By doing a number of experiments on signals with different signal size ratio,the relationship between signal-separation precision and signal size ratio is approximate to an exponential function.On condition that signal size ratio is more than or equal to two,the accuracy of signal-separation satisfies requirement of engineering application.This result also adapts for precision analysis of correlation-value computing and other algorithms based on correlation computing,such as time-delay estimation,signal matching.