Receiver with adaptive detection threshold for tdma communications

摘要

A method of and a digital data recovery circuit ( 1 ) for extacting digital data from an analog data signal in a Time Division Multiple Access (TDMA) communications system, wherein the analog data signal of a communications link is exchanged in bursts or time slots. The circuit ( 1 ) comrises analog-to-digital (ADC) converter means ( 4 ), digital filter means ( 6 ) for providing a threshold or slice level, and digital comparator means ( 5 ) for comparing the digital data signal and the slice level for providing the recovered digital data. The digital filter means ( 6 ) comprise storage means ( 15 ) for digitally adjusting the filter time constants and slice level for each burst or time slot independently in accordance with specific settings applicable to a communications link associated with a burst or time slot.