Harmonic retrieval of CFO and frame misalignment for OFDM-based inter-satellite links
Küçük Resim Yok
Tarih
2021
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
IEEE
Erişim Hakkı
Attribution-NonCommercial-ShareAlike 3.0 United States
info:eu-repo/semantics/openAccess
info:eu-repo/semantics/openAccess
Özet
As dense low Earth orbit (LEO) constellations are being planned, the need for accurate synchronization schemes in high-speed environments remains a challenging problem to tackle. To further improve synchronization accuracy in channeling environments, which can also be applied in the LEO networks, we present a new method for estimating the carrier frequency offset (CFO) and frame misalignment in orthogonal frequency division multiplexing (OFDM) based inter-satellite links. The proposed method requires the transmission of pilot symbols to exploit 2-D estimation of signal parameters via rotational invariance techniques (ESPRIT) and estimate the CFO and the frame misalignment. The Cramer-Rao lower bounds (CRLB) of the joint estimation of the CFO and frame misalignment are also derived. Numerical results show that the difference between the proposed method and the state-of-art method is less than 5dB at its worse.
Açıklama
Anahtar Kelimeler
Frequency synchronization, Timing synchronization, Doppler shift, Harmonic retrieval, Inter-satellite links
Kaynak
17th International Symposium on Wireless Communication Systems
WoS Q Değeri
Scopus Q Değeri
N/A
Cilt
Sayı
Künye
Şenyuva, R.V. ve Kurt, G. K. (2021). Harmonic retrieval of CFO and frame misalignment for OFDM-based inter-satellite links. IEEE, 2021 17th International Symposium on Wireless Communication Systems (ISWCS). s.1-5.
