| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce the power consumption and circuit scale of a matched filter and to further set path detection without useless processing with a flexible detection width regarding a CDMA (code division multiple access) receiver for improving reception characteristics by performing RAKE synthesis by integrating signal power delayed and distributed on a transmission line into one and a method for detecting correlation values. SOLUTION: Time-series received signals of delayed arriving waves are held in a delay element part 1-11. When the correlation values between the held time-series received signals and estimated code strings are calculated, code strings for detection width of the delayed arriving waves are divided into two or more and the correlation values with the time-series received signals are calculated respectively with correlation value calculation parts 1-12, 1-22 of the respective matched filters 1-10, 1-20 storing the divided codes respectively. The correlation values outputted from the respective correlation value calculation parts 1-12, 1-22 are integrated by every correlation value calculation part by using an integration part having memories 1-13, 1-23 corresponding to the respective correlation value calculation parts. In addition, the division number is defined as a measure of a symbol pattern cycle.</p> |
