| 摘要 |
A transmission system, including a first modem at a first location including a first demodulator for receiving and demodulating RF mobile communications signals into digital signals and a first modulator for modulating digital signals into RF mobile communications signals, and a second modem at a second location including a second demodulator for receiving and demodulating RF mobile communications signals into digital signals and a second modulator for modulating digital signals into RF mobile communications signals, wherein the output of the first demodulator is connected to the second modulator, and the output of the second demodulator is connected to the first modulator, by digital signal transmission media. |
