| 摘要 |
PROBLEM TO BE SOLVED: To provide a receiver capable of obtaining accurate reception signal data even when received signal fluctuates fast outside the range and even when the received signal includes modulation of an amplitude component. SOLUTION: Respective systems for reception signal processing hold amplifiers 11, 21, AGC (automatic gain control) circuits 12 and 22 for performing automatic gain control with mutually different response speeds and AD converters 13 and 23, respectively, and a digital signal processor 30 which receives signals that pass through the systems selects digital data with the lowest error rate between the systems. Then, the reception signal data which has the lowest error rate can be obtained. For example, when the received signal is disturbed by fast level fluctuations such as fading, the output of a system comprising an AGC circuit with a fast response speed is selected, and when the received signal takes a modulation system with an amplitude component, it is enough that the output of a system comprising an AGC circuit with a slow response speed is selected. COPYRIGHT: (C)2004,JPO&NCIPI
|
