SYSTEMS AND METHODS FOR ANTENNA DIVERSITY COMBINING FOR SATELLITE RADIO SIGNALS

摘要

Systems and methods are presented for digital antenna diversity combining. I n exemplary embodiments of the present invention, at least two antenna signal paths can be communicably connected to a receiver. Each antenna signal path can be provided with an RF tuner communicably connected to a demodulator, which can estimate the signal to noise ratio (SNR) and time of arrival of it s respective antenna signal. In operation, a time alignment circuit can use th e time of arrival estimate to align the multiple signals and the maximum ratio combiner can use the SNR estimate obtained for each antenna signal to respectively weight each signal and thereby generate a combined output signa l.