Abstract :
✓An experimental implementation of adaptive modulation technique for air-to-ground (A/G) communication systems using a software defined radio approach was presented. ✓The system implementation provides a transmission, of a real time captured video, equipped by an adaptive modulation technique. The system autonomously chooses the most suitable modulation among BPSK, QPSK, 8PSK, 16QAM based on the estimation of link quality measured by the signal to noise ratio (SNR) in real time. ■More investigations are currently done to improve 64QAM transmission quality in order to offer more bits per symbol. ■Adaptive coding is currently being implemented to have adaptive modulation and coding (AMC) for (A/G) communication systems.
