Time based signal detector for operating in a presence search mode and absence search mode during peak times and off peak times

摘要

A receiver capable of receiving a plurality of signals, wherein more of the signals are received at a peak time than at an off peak time, comprises the method of a first step for determining if the signals are being received by searching in a first search mode and a second step for determining if the signals are not being received by searching in a second search mode. Selection circuitry activates the first step during the peak time and activates the second step during the off peak time. The first and second search modes comprise searching for the signal and searching for noise, respectively.