| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an optical-wireless fusion communications system for incoming/outgoing bidirectional communication by a storage station and a wireless base station, using an inexpensive and simple configuration. <P>SOLUTION: An optical signal from a first single spectrum light source 102 is branched in two in the storage station 100, and one is modulated by a carrier wave restriction both-side wave band with the use of the carrier wave signal of half value of a frequency in an outgoing wireless signal, and modulated by outgoing transmission data so as to be multiplexed with the other and transmitted to the wireless base station. The optical signal received is branched in two in the wireless base station 300; the outgoing wireless signal obtained by receiving one signal is transmitted to a wireless terminal 400, and the other is modulated by an incoming wireless signal from the wireless terminal 400 and returned to the storage station 100. The storage station 100 multiplexes the received modulation optical signal with a signal which is obtained by combining the optical signals from second and third single spectrum light sources 103, 104 with orthogonal polarized wave, performs square-law detection, and then reproduces uplink transmission data. <P>COPYRIGHT: (C)2007,JPO&INPIT |
