| 摘要 |
A multi-clock matched filter for receiving signals with multipath. The signals may be modulated with a spread-spectrum spreading sequence, or other analog or digital signal. A number of signal registers (11, 21, 31, 41) store digital samples of the received signal. The gating of digital samples into each of the signal registers is controlled through a plurality of gates (12, 22, 32, 42) by a separate clock timing. The timing sequence may be derived from a common clock (68). A multiplexer (18) sequentially selects each of the signal registers (11, 21, 31, 41), and passes the respective content of each signal register to a matched filter (150). A number of signal path-tracking circuits (17, 27, 37, 47) track each of the multipath signals, and generate the timing sequence for gating signal registers (12, 22, 32, 42).
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