Patent ID: 8494094
Filing Date: 2013-07-23
Classification: G01S

Abstract:
1. A method of extracting data bits from a wireless signal, the method comprising: retrieving a plurality of results of correlating a baseband version of the wireless signal with a locally-generated reference signal; repeating over a time period: integrating the plurality of results of correlating, independent of a location of an edge of a data bit in the wireless signal relative to a local clock, to produce a plurality of sums; and storing the plurality of sums obtained by said integrating; using at least the plurality of results of correlating, to determine the location of the edge of the data bit relative to the local clock; demodulating the plurality of sums stored by said storing, based on the location of the edge of the data bit, to generate at least the data bit; storing said at least the data bit obtained by said demodulating; and wherein at least the demodulating is performed by a processor and the generated data bit is stored in a memory coupled to the processor, and wherein in performing the demodulating the processor uses the location of the edge of the data bit to identify from within the plurality of sums stored by said storing, a group of sums corresponding to a duration of the data bit in the wireless signal and integrates the sums in the group of sums to generate an additional data bit.