| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a radio receiver capable of performing AGC control with a simple configuration and by simple control without the need of a circuit for power calculation that is a problem in a conventional method and without the need of execution of calculation processings. <P>SOLUTION: In this radio receiver, a complex correlation between a signal received by correlating part 2 and a known signal is calculated and a correlation value is outputted. An AGC control part 3 calculates the maximum value of the correlation value, a correlation maximum value calculated beforehand from a desired signal level is defined as a reference value, and a ratio of the reference value to the maximum value calculated from a reception signal to output a ratio value as a control signal. A level correcting part 4 performs gain amplification (level correction) of a signal received with a variable gain that follows a control signal outputted from the AGC control part 3. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
