For B5G/6G, non-terrestrial networks (NTNs) using geostationary orbit (GEO) satellites, low earth orbit (LEO) satellites, and high-altitude platforms are attracting attention as a means of super coverage extension. The LEO satellite constellation is one of the most attractive NTN systems. It directly accommodates mobile terminals with a high data rate. In this system, the service and feeder links must have a larger capacity than conventional satellite-dedicated communication systems because they accommodate a more significant number of terminals. This paper proposes an ultra-long-range wide-area Massive MIMO system to increase the capacity of feeder links in satellite communications. In the proposed system, the gateway antennas are composed of many small antennas deployed over a wide area that cooperate with them to increase the number of spatial multiplexes and the antenna gain. Simulation results show that the channel capacity can be increased by approximately 4.8 by using 200 small antennas with ground antennas having a constant total gain, compared with the case of a single antenna.
Proposal of ultra long-range wide-area massive MIMO for high-capacity feeder links in satellite communications
01.01.2023
498405 byte
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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