Analysis and Simulation of Adaptive Coding and Modulation for Remote Sensing Satellite

摘要

In order to meet the high-speed downlink data transmission requirements of medium and low-orbit remote sensing satellites, higher spectrum efficiency is achieved under limited frequency band resources. This paper proposes an adaptive coding and modulation technique aiming at the problem of waste of link margin in the traditional data transmission mode. It can realize full utilization of link margin and improve spectrum efficiency under the premise of reliable transmission. Through link calculation and simulation verification, the spectrum utilization rate of the remote sensing data transmission under adaptive mode is 1.8 times that of the traditional constant coding and modulation mode.