The Effect on Error Performance of Angle Diversity in A High Capacity Digital Microwave Radio System
01 January 1987
The error performance of high capacity digital microwave radios has been dominated by the dispersive channel which exists during periods of multipath propagation. We have demonstrated that by using a single angle diversity antenna the effects of multipath propagation can be eliminated from consideration in digital microwave radio systems. An experiment which we have conducted using 135 Mb/s, 64 QAM digital radio on one of AT&T's most dispersive paths, has shown a reduction in errored seconds by a factor of 100 and severely errored seconds by a factor of 250 when comparing the performance of the existing horn antenna to that of a single angle diversity antenna.