METHOD AND APPARATUS FOR TIME TRACKING A SIGNAL

摘要

A method of providing time tracking between a first signal and a second signal in a communication device. In one embodiment, a first signal is generated by the communication device and a second signal is received from an outside source. Then correlation data between a first signal, at a plurality of timing conditions (211-213), and a second signal is generated by hardware (209a). Next, the correlation data is filtered by software (209b) or firmware at a plurality of timing conditions. Afterward, the correlation data is compared to a threshold (212c) value to evaluate accuracy of a system timing for the first signal to obtain a result. Finally, the system timing for the first signal is corrected based upon said result of the comparing step (230).