Doppler Analysis and Compensation for Distributed LEO-MIMO Satellite Communications

Abstract

In this paper, we propose a Doppler compensation method in LEO-MIMO communication, where two LEO satellites are used as amplify-and-forward (AF) relays, and line-of-sight (LOS) propagation dominates the communication channel. We first analyze Doppler effects in uplink and downlink, and propose a dual-hop AF relay channel model including Doppler effects. Also we show that Doppler effects in our scenario can be easily compensated at the LEO satellites, without the need of intersatellite link (ISL) communication.