METHOD FOR AVOIDING INTERFERENCE IN A DIGITAL COMMUNICATION SYSTEM

摘要

A technique for time domain avoidance of communications link interferen ce sources characterized by intermittent, periodic short bursts of energy. A transmitting source can be assigned two time slots within a time domain multiple access data frame over which each data packet can be transmitted. The time slots are separated by a duration greater than that of an interference burst, such that an interferen ce burst does not affect both time slots in any given frame. Therefore, the data packet ca n be received on at least one of the two assigned time slots. Transmitter power consumption can be reduced by calculating the timing of the periodic interference bursts , and only transmitting a data packet on one of the two assigned time slots that will n ot coincide with an interference burst in each frame. Communications link capacity can b e improved during the presence of interference by synchronizing the data frame to the timing of the interference bursts. The bursts then occupy fixed time slots i n each data frame, enabling standard single time slot transmissions for the remaining communications channels in the data frame.