抄録
We developed space diversity communication control unit, which has non-cutoff function for QPSK digital radio receiver(SHF band). This system has good stability, high-speed detection, and switch-over with low level of receive signal and degradation of BER(Bit Error Rate). It is found to be useful for oversea propagation and frequent heavy fading of microwave digital communications line. Also, this system design realizable low transmission power and low cost.
