Signal detection in the presence of inaccurate multipath time delay modelling

A class of signal detectors is considered whose structure is similar to the log-likelihood detector developed under low signal-to-noise ratio conditions, but with different choices to the sensor filters. The performance of the log-likelihood processor is analyzed and interpreted in the presence of incorrect delay assumptions. Based on this study, ad hoc detectors are proposed and their performance compared to that of the log-likelihood structure. It is shown that, for increasing misadjustment in the delay assumptions, the performance of the ad hoc detectors is superior