| 摘要 |
PROBLEM TO BE SOLVED: To provide digital radio equipment which can correct required frame timing even in the case of using an antenna switch and in which the timing is not greatly shifted even when long-time transmission such as data transmission is performed. SOLUTION: This equipment has a receiver provided with a timing reproducing means for reproducing a reproduction symbol clock signal, a frame reproducing means reproducing a received frame signal, a reference oscillating means for generating a reference symbol clock signal and a reference clock signal, and a timing error detecting/correcting means for generating a transmission frame signal with corrected timing with a received signal from the reproduction symbol clock signal, the reference symbol clock signal, the reference clock signal and the received frame signal, a transmitter provided with a modulating means that constructs the transmission data frame of an information signal on the basis of the transmission frame signal and outputs a transmission signal obtained by modulating a carrier signal, and the antenna switch switching the received signal and the transmission signal. The equipment detects the error of the reference symbol clock signal when the received signal is received and corrects the timing of the transmission frame signal when the transmission signal is transmitted. |
