| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a radio receiver capable of constituting an MB-OFDM receiver circuit without using a high speed analog switch. <P>SOLUTION: Three base band demodulators DEMO1-3 in a BB 2 are provided corresponding to local frequencies f1, f2, f3 suited to a frequency hopping pattern for demodulating signals received by an RF unit 1 using corresponding local frequencies. A selector SEL1 switches over outputs I of the base band demodulators DEMO1-3 to output through AD converters ADI1-3 according to the timing of the frequency hopping of the received signals. A selector SEL2 switches over outputs Q of the base band demodulators DEMO1-3 to output through AD converters ADQ1-3 according to the switching timing by the selector SEL1. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
