METHOD AND APPARATUS FOR IDENTIFYING THE MODULATION FORMAT OF A RECEIVED SIGNAL

摘要

A method of identifying the modulation format of a received radio frequency (RF) signal from a plurality of modulation formats is described. The method comprises: (a) sampling the RF signal to generate sampled input data (520); (b) analysing at least first samples of the sampled input data to generate characteristic data (530); (c) comparing the characteristic data with stored information representing each of modulation formats to identify a most probable modulation format (550); and (d) outputting data representing the most probable modulation format (560). The modulation format can therefore be identified without requiring a sequential search until a match is found. In effect all of the modulation formats are being searched concurrently. This reduces the time required to identify the modulation format.