Patent ID: 6233230
Filing Date: 2001-05-15
Classification: H04B,H04L

Abstract:
An apparatus for determining a data rate of a received, encoded signal, comprising:a deinterleaver for deinterleaving the recorded, encoded signal and outputting a frame of deinterleaved symbols b.sub.0, b.sub.1, b.sub.2, . . . b.sub.N, where N is an integer;a feature calculation circuit for applying a plurality of different algorithms to the frame of deinterleaved symbols to produce a corresponding plurality of output feature values which are indicative of a degree of repetition of the deinterleaved symbols;a neural network for processing the plurality of output feature values according to a predetermined set of weights to produce a plurality of output rate determination values y.sub.1, y.sub.2, . . . y.sub.n, each of which corresponds to a different data rate, where m.ltoreq.y.ltoreq.M, n is an integer and m and M are predetermined minimum and maximum values, respectively; anda rate detection circuit for comparing the plurality of output rate determination values y.sub.1, y.sub.2, . . . y.sub.n and selecting a rate corresponding to the largest output rate determination value y.sub.1, y.sub.2, . . . y.sub.n.