| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide radio equipment of an ROF system capable of reducing the influence of attenuation in an optical fiber cable and transmitting and receiving the radio waves of high signal quality. <P>SOLUTION: For reference signals for local oscillation transmitted from a relay processing part 1 connected to a base station via the optical fiber cable 4, in an RF processing part 2, the reference signals satisfying a required C/N which are reproduced and output by using a PLL 25 exclusive for reproduction and output, are output to a PLL Lo to a converter 26 for performing the frequency conversion of the signals of forward and reverse links transmitted and received between the relay processing part 1 and an antenna unit 3. <P>COPYRIGHT: (C)2007,JPO&INPIT |
