| 摘要 |
PURPOSE:To utilize a radio wave effectively and to improve the reception sensitivity by employing an optical fiber for a feeding system between a main base station and a slave base station so as to avoid interference between feeding systems and setting a radio frequency used for each slave base station optionally. CONSTITUTION:Each input signal is converted into plural optical waves with a different wavelength in a main base station 50 and the optical wave is subjected to wavelength multiplex and the result is propagated through an optical fiber 60. The optical wave on the optical fiber is demultiplexed for each wavelength by a wavelength selection means, the demultiplexed optical wave is converted into a radio frequency signal at each of slave base stations 150-152 and sent to a terminal equipment 96. On the other hand, the radio frequency signal sent from the terminal equipment is received by a slave base station, where the signal is converted into the optical wave having a wavelength specific to the base station and propagated through the optical fiber 60. The optical wave is demultiplexed for each wavelength at the main base station and then converted into an electric signal to detect a signal from each terminal equipment. |
