TECHNIQUE FOR IMPROVING RADIO SYSTEM PERFORMANCE DURING FADING

摘要

- 11 -A TECHNIQUE FOR IMPROVING RADIO SYSTEMPERFORMANCE DURING FADINGAbstractA technique for reducing the average fadeduration of signals in a radio system by simulating motionof a plurality of transmitting antennas is disclosed. Thissimulation is accomplished by slowly and continuouslyvarying a characteristic of the modulated carrier signalsupplied to the antennas. The altered characteristic caneither be the power of the modulated carrier signalsupplied to each of the antennas or the phase betweenmodulated carrier signals coupled to the antennas. Thistechnique can also be applied at a receiver to reduce theaverage fade duration of signals arriving thereat bysimulating motion of a plurality of receiving antennas.