Beam Size Design for LEO Satellite Networks with Doppler Shift Characteristics

Citation: International Conference on ICT Convergence, Vol.2022-October, pp.924-926

Keyword: bBeam size Doppler shift Low Earth Orbit (LEO) satellite networks OFDM numerology pre-compensation

Mesh Keyword: Bbeam size Beam size High mobility Low earth orbit satellite network Low earth orbit satellites Network design OFDM numerology Pre-compensation Satellite network Terrestrial networks

All Science Classification Codes (ASJC): Information Systems Computer Networks and Communications

Abstract: Low Earth Orbit (LEO) satellite networks need to consider the high mobility of LEO satellites. The high Doppler shift due to the mobility of LEO satellites occurs essentially and its scale is not considered in the terrestrial network. Therefore, it is difficult to overcome the Doppler shift in LEO satellite networks with the existing terrestrial network design. In this paper, we propose a LEO sate0llite beam design considering Doppler shift. After calculating Doppler shift and compensation, we analyze the characteristics of Doppler shift in LEO satellite networks. Given OFDM numerology technology of 5G NR (New Radio) and carrier frequency, the LEO satellite beam size is determined differently.

URI: https://aurora.ajou.ac.kr/handle/2018.oak/36818
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85143256373&origin=inward

Funding: VI. ACKNOWLEDGMENT This research was supported by the MSIT(Ministry of Science and ICT), Korea, under the ITRC(Information Technology Research Center) support program(IITP-2022-2018-0-01424) supervised by the IITP(Institute for Information communications Technology Promotion) and by the National Research Foundation of Korea(NRF) grant funded by the Korea government(MSIT) (No. 2021R1A4A1030775).

qrcode