| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a matched filter whose power consumption is reduced substantially. SOLUTION: When a CW(continues wave) is received at a specific period and acquiring synchronization in a code division multiple(CDM) transmission system, the output of the matched filter has only to be monitored for a timing, when the CW is received after synchronization is once established. In this case, the operation of the matched filter is divided into a phase where an output of the matched filter is in use, and a phase where data are given to a shift register. Then the shift register of the matched filter is divided into a plurality of block, and one of the block divisions in activated in the phase where the data are inputted. Thus, power consumption is reduced.</p> |
