| 摘要 |
PURPOSE:To prevent deterioration in a code error rate characteristic even during the period without any burst signal by providing a scramble circuit to an input of a transmitter of a relay station directed to a master station and providing a de-scramble circuit to an output of a receiver of a master station. CONSTITUTION:A self-scramble circuit 27 is provided to an input of a transmitter 24 of the relay station 2 directed to the master station, and the de-scramble circuit 14 corresponding to the output of a receiver 13 is provided to the master station 1. A burst signal transmitted in a time slot assigned from slave stations 3A-3N is demodulated and reproduced, and the reproduced time division multiplex signal TDM is transmitted to the master station 1 through the self-scramble circuit 27. The master station 1 demodulates and reproduces the signal and uses the de-scramble circuit 14 operated reversely as the circuit 27 so as to restore the said signal into a base band signal, which is decoded by a code processing circuit 15 and the signal from the slave stations 3A-3N is restored separately. |
