Patent ID: 6879627

Claim:
A receiver baseband apparatus, comprising: an input unit adapted to receive an I and Q signal; a first matched filter adapted to receive said I signal and generate an I filtered output therefrom; a second matched filter adapted to receive said Q signal and generate a Q filtered output therefrom; a processor programmed to perform the steps of; detecting the presence of signal activity as input to said receiver baseband apparatus; acquiring said signal activity by performing coarse phase acquisition on said signal activity once it is detected, wherein said performing coarse phase acquisition comprises: rotating vectors z n representing said signal activity into a single quadrant by an angle Θk; wiping off said z n (Θk) modulation; summing the wiped off vectors z n (Θk); determining the energy contained within a plurality of hypotheses; and selecting a single hypothesis from said plurality of hypotheses having the maximum energy; pre-tracking said signal activity once it is detected; and tracking said signal activity once it is detected; a decoder adapted to receive said I filtered output signal and said Q filtered output signal from said processor and to generate a decoded output therefrom; a deinterleaver adapted to generate a deinterleaved output in accordance with said decoded output signal input thereto; a forward error correction decoder adapted to generate output receive data in accordance with said deinterleaved output signal input thereto; and a controller adapted to manage and control said input unit, first matched filter, second matched filter, said processor, said decoder, said deinterleaver and said forward error correction decoder.