| 摘要 |
PURPOSE:To transmit digital codes of high quality to a mobile station over a wide range, by simultaneously transmitting signals of divisionally assigned channels from respective transmitting centers by correcting transmission distortion in each leased circuir from a central control station. CONSTITUTION:Transmitting centers TX1-TX3 are arranged at distances d11- d13 in a wide region and central control station C controlling respective transmitting centers TX1-TX3 is also arranged. Those transmitting centers 2-3 (TX1- TX3) are connected to control station 1(C) via leased transmitting circuits d1- d3 and to antennas and receiver 5 of mobile stations, data of digital codes obtained by modulating (n) channel information in the transmission band in FSK (frequency shift) mode are transmitted. Then, signals of channels divisionally allotted among (n) channels are sent out of transmitting centers 1-3 via transmitting antennas by correcting delay distortion in transmitting circuits d1-d3 from control station 1 to enable each device 5 moving in a broad region to receive selectively the channel of the same information among (n) channels. |
