KEYWORDS: Telecommunications, Satellite communications, Satellites, Systems modeling, Energy efficiency, Signal to noise ratio, Doppler effect, Data communications, Computer simulations, Antennas
Aiming at the limited energy load of LEO satellites, this paper researches on the digital precoding design of LEO satellite communication system based on energy efficiency (EE) maximization, combining with massive multiple-input multiple-output (Multiple-Input Multiple-Output, MIMO) precoding technology. At the same time ,we consider the joint constraints of quality of service (QoS) and total transmission power. First, the system model and channel model are analyzed. Then, for the fractional programming problem of EE maximization modeling, the Dinkelbach algorithm and the zero forcing (ZF ) precoding algorithm are combined to complete the precoding design. The simulation results show that the algorithm design can show good performance while ensuring QoS.
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