Patent ID: 7317753

Claim:
A system for detecting, tracking and combining a multipath fading signal, wherein said multipath fading signal has a plurality of significant “multipath components spanned over a plurality of symbol periods, said system comprising: a signal register consisting of a plurality of shift registers, coupled to receive said multipath fading signal for capturing a moving section of said multipath fading signal and for providing a plurality of tapped output signals with each tapped output signal taken from a corresponding shift register of said plurality of shift registers, wherein said plurality of shift registers are driven by a sampling clock; a reference signal generator for producing a plurality of sections of a local reference signal with each section corresponding to one symbol period and held for one symbol period before being updated and with any two adjacent sections of said local reference signal being offset by one symbol period in phase and being different; a plurality of correlation devices for generating a plurality of correlation signals with each correlation device coupled to receive said plurality of tapped output signals simultaneously and a corresponding section of said plurality of sections of said local reference signal simultaneously for generating a corresponding correlation signal indicating a plurality of similarities between said multipath fading signal and said corresponding section of said plurality of sections of said local reference signal over a symbol period at a plurality of moments determined by said sampling clock; a signal combiner coupled to receive said plurality of correlation signals for combining said plurality of correlation signals to produce a combined signal according to a multipath profile, wherein said signal combiner combines three or more said correlated signals; wherein said signal combiners is under the control of a control device and said control device coupled to receive said plurality of correlation signals and said combined signal from out of said signal combiner for identifying and updating said multipath profile and generating a control signal to align up said plurality of correlation signals to produce said combined signal.