Receiver for mobile communications systems with equalisation and differential detection

摘要

An equalizer block (2, 34, 52, 74) forming part of a receiver compensates transmission path characteristics of a baseband received signal to generate a prediction signal (10, 35, 53,75), and differential-logic-converts a demodulated signal generated by demodulating the prediction signal to generate a differential-logic-conversion demodulated signal (13a, 37a, 55a, 77a). A differential-detection demodulator block (9, 36, 54, 76) differential-detects the prediction signal from the equalizer block and subsequently demodulates the differential-detected prediction signal to generate a differential-detection demodulated signal (13b, 37b, 55b, 77b). A selector block (12, 27, 38, 38A, 59, 78) selects either the differential-logic-conversion demodulated signal from the equalizer block or the differential-detection demodulated signal from the difference-detection demodulator block.