Design of a New High-Order QAM FM Communication Transceiver and Verification of mmWave Software Radio Platform

Today's low Earth orbit (LEO) satellite communication is an important research direction of the future sixth generation of mobile communication (6G). This research plan is to explore the new high-order quadrature amplitude modulation (QAM) signal transceiver design technology through frequency modulation (FM), and hope to propose a feasible solution for long-distance power amplifier (PA) efficiency improvement, anti-high-speed Doppler movement, anti-multipath interference and other factors of transceiver technology. This study features high-level QAM transmission and coherent FM transceiver design, integrating FM coherent demodulator and synchronous demodulation technology to achieve system-wide demodulation capabilities. Finally, this program has the simulation analysis performance of the algorithm and the verification of the Zedboard and AD9361 software-defined radio (SDR) platform with millimeter wave (mmWave) 28GHz up/down converter (UDC), measuring the practicality of the proposed method of this topic.