Patent ID: 8009775

Claim:
An apparatus, comprising: at least one processor configured to perform frequency acquisition based on a time division multiplexed (TDM) received pilot and to perform frequency tracking based on received Orthogonal Frequency Division Multiplex (OFDM) symbols; a memory coupled to the at least one processor; and wherein the at least one processor is further configured to process the TDM received pilot by: providing a plurality of input samples to a delay line that delays each input sample by a plurality of sample periods corresponding to a length of a pilot sequence; producing a complex conjugate of each delayed sample from the delay line; multiplying each delayed sample with the complex conjugate; peak detecting an output of the multiplying to detect the TDM received pilot and to provide a sample index for a start of a first pilot sequence; and accumulating the output of the multiplying over the plurality of sample periods corresponding to the length of the pilot sequence to provide a correlation result for each pilot sequence based on the sample index provided by the peak detecting.