Patent ID: 8781039

Claim:
A receiver for receiving a composite signal, the receiver comprising: a receiver front-end for down-converting a received composite signal; an analog-to-digital converter for converting the downconverted signal to a received digital composite signal; a first signal generator for generating a first signal; a data storage device for providing a null code; a multiplexer for multiplexing the first signal and the null code consistent with a predetermined time sequence for expression of the null code in a produced precursor signal; a ranging code generator for generating a ranging code; a mixer accepting the ranging code and the precursor signal and outputting a locally generated reference signal; a code correlator for correlating the digital received composite signal to the locally generated reference signal to decode at least a first portion of the received composite signal, while leaving a second portion of the received composite signal undecoded; and a tracking loop signal processor to process the received digital composite signal via a time delay module to maximize correlation of the digital received composite signal to the locally generated reference signal.