OFDM SIGNAL TO NOISE RATIO DETECTOR AND METHOD

摘要

The present invention relates to a method and apparatus for estimating the signal to noise ratio of a broadcast OFDM signal. The invention compares signals of the data in a guard interval and the corresponding part of the data frame of an OFDM symbol. A sum and difference operation is then performed on the data in the compared signals to enable a Signal to Noise Ratio to be calculated.