| 摘要 |
<p>The present invention provides a method and device for searching and tracking multi-path, by using matching filter for demodulating spread spectrum received signals; when local codes in matching filter align with a certain path signals, correlative peak value is outputted from matching filter; power of different delay signal is gained after the signals of the two branches I, Q are squared and added, wherein the maximum is selected as strongest path signal, and the strongest path signal is subtracted from the output of matching filter, then the maximum power is selected from the rest signals as another path signal ; the position information is sent to RAKE receiving unit. It provides for searching the strongest power signal in the downlink synchronous channel signals.</p> |
