| 摘要 |
<p>A wireless communication device of a cellular telephone network including a searcher (10). Pilot signals from nearby base stations are correlated with a pseudonoise sequence inside a search window, using a bank of correlators (20). Each correlator (20) is assigned a different delay, from among a sequence of delays in the window (14). At each delay, correlation is performed initially for a first dwell time. If the resulting correlation value exceeds a threshold, the correlation is continued for a second dwell time. Otherwise, the correlator (20) is set to the next delay in the sequence. Only the outputs of second dwell correlations are used to identify the nearest base station. Some correlations may perform first dwell correlations at new delays in the same time that other correlators are still performing second dwell correlations at old delays in the window. <IMAGE></p> |
