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FBMC-based Random Access Signal Design and Detection for LEO Base Stations
- Source :
- IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, r-CTTC. Repositorio Institucional Producción Científica del Centre Tecnològic de Telecomunicacions de Catalunya (CTTC), Universitat Oberta de Catalunya (UOC)
- Publication Year :
- 2022
- Publisher :
- Institute of Electrical and Electronics Engineers Inc., 2022.
-
Abstract
- The integration of non-terrestrial networks into the 5G ecosystem is mainly driven by the possibility of provisioning service in remote areas. In this context, the advent of flying base stations at the low Earth orbit (LEO) will enable anywhere and anytime connectivity. To materialize this vision, it is of utmost importance to improve radio protocols with the aim of allowing direct satellite access. Bearing this aspect in mind, we present a new random access signal, which is based on the filter bank multicarrier (FBMC) waveform, and a computationally efficient detection scheme. The proposed solution outperforms the standardized access scheme based on single-carrier frequency division multiplexing (SC-FDM), by reducing out-of-band (OOB) emissions and reducing the missed detection probability in presence of very high carrier frequency offset (CFO), which is inherent to LEO satellite systems. The improvement is related to the fine frequency resolution of the detector and the use of pulse shaping techniques. Interestingly, the FBMC-based random access signal achieves a high level of commonality with 5G new radio, as the preamble generation method and the time-frequency allocation pattern can be kept unchanged. Concerning the practical implementation aspects, the complexity of the detector is similar in both SC-FDM and FBMC. IEEE
- Subjects :
- Filter-bank multicarrier
Communication satellites
Complexity theory
Frequency allocation
Satellite communication systems
Complex networks
Mobile communications
Base stations
Orbits
Random access
Computational complexity
Low earth orbit satellites
5G mobile communication systems
Carrier frequency division multiplexing
Single carrier
Satellite broadcasting
Earth orbits
5g mobile communication
Subjects
Details
- ISSN :
- 15361276
- Database :
- OpenAIRE
- Journal :
- IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, r-CTTC. Repositorio Institucional Producción Científica del Centre Tecnològic de Telecomunicacions de Catalunya (CTTC), Universitat Oberta de Catalunya (UOC)
- Accession number :
- edsair.RECOLECTA.....6c168c1717c7720ec04f2017fded1694