FBMC-based Random Access Signal Design and Detection for LEO Base Stations
| Autor: | Caus M., Perez-Neira A.I. |
|---|---|
| Rok vydání: | 2022 |
| Předmět: |
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 |
| Zdroj: | IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS r-CTTC. Repositorio Institucional Producción Científica del Centre Tecnològic de Telecomunicacions de Catalunya (CTTC) Universitat Oberta de Catalunya (UOC) |
| ISSN: | 1536-1276 |
| DOI: | 10.1109/TWC.2022.3209898&partnerID=40&md5=269fd538c9d014db862388c846b8a358 |
| Popis: | 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 |
| Databáze: | OpenAIRE |
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