DIGITAL KOMMUNIKATIONSSYSTEM.

摘要

The present invention provides a communication system which employs a signal whose carrier phase is shifted by a constant amount DELTA theta per time slot in correspondence to each symbol (1 or 0) transmitted, and the phase shift is performed by DELTA theta /2 (or - DELTA theta /2) in the first, 1/2 time slot and further by DELTA theta /2 (or - DELTA theta /2) in the second 1/2 time slot, to be combined with a half-bit differential detector, thereby to improve the bit error rate in multipath propagation.