SIGNALLING BY SHIFTING THE MODULATION INDEX IN CONTINUOUS PHASE MODULATION

摘要

A transmitting device (20) overlays control information onto information bit stream intended for a receiving device(40)by varying or shifting the modulation index in continuous phase modulation (CPM) waveform. The receiving device (40) detects the modulation index used at the transmitting device (20) to modulate the data burst. The receiving device (40) then determines the control information based on the detected modulation index.