SYMBOL SYNCHRONISATION IN A MULTICARRIER RECEIVER

摘要

A receiver for multicarrier signals has means for synchronising to the sampling clock. The average phase variation of pilot signals is calculated for those subcarriers at the upper end of the spectrum; similarly, the average phase variation of the pilots at the lower end is calculated. The difference between these two averages, weighted by the frequency separation of the pilots, constitutes an error signal, which controls the frequency of the sampling clock.