| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a radio receiver capable of preventing generation of a reception error with low power consumption. <P>SOLUTION: An A/D converter changes a sampling timing of a reception signal x(i) in a synchronization capturing mode and a synchronization followup mode. The A/D converter generates an internal clock having a sampling frequency of eight times symbol rate by control of a clock control unit in the synchronization capturing mode. The A/D converter generates an internal clock using a symbol point and points before or after the symbol point as a sampling timing by the control of the clock control unit in the synchronization followup mode. Further, the A/D converter corrects the sample timing of the symbol point on the basis of the maximum value of a correlation value between the reception signal x(i) and a reference signal r(i), and a square of the size of correlation values before and after the maximum value in the synchronization followup mode. <P>COPYRIGHT: (C)2007,JPO&INPIT |
