SPREAD SPECTRUM SIGNAL RECEIVER

摘要

A spread spectrum signal receiver which can make signal judgement in an excellent state even when the variation of its transmission line is large. For the judgement, the receiver compresses back the received signals and outputs the compressed signals. The compressed signals are linearly combined, and the signal judgement is performed based on the results of the combination. Alternatively, from the compressed signals, compression estimation signals are subtracted, respectively, to calculate pre-estimated errors before hand. Based on the square sum of the pre-estimated errors, signal judgement is performed. The tap coefficient is estimated by an RLS algorithm for replacing the pre-tap coefficient vector with the product of the pre-tap coefficient vector by a transition matrix.