Zobrazeno 1 - 10
of 73
pro vyhledávání: '"Toni Levanen"'
Publikováno v:
IEEE Open Journal of the Communications Society, Vol 3, Pp 282-300 (2022)
In this paper, a novel waveform with low peak-to-average power ratio (PAPR) and high robustness against phase noise (PN) is presented. It follows the discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-s-OFDM) signal mod
Externí odkaz:
https://doaj.org/article/470ddbf16830461f86e9cc20ff7da970
Autor:
Elena Peralta, Toni Levanen, Mikko Mäenpää, Youngsoo Yuk, Klaus Pedersen, Sari Nielsen, Mikko Valkama
Publikováno v:
EURASIP Journal on Wireless Communications and Networking, Vol 2021, Iss 1, Pp 1-22 (2021)
Abstract In time division duplexing based mobile networks, under certain atmospheric ducting conditions, the uplink reception may be interfered by the downlink transmissions of remote base-stations (gNBs) located hundreds of kilometers away. This pap
Externí odkaz:
https://doaj.org/article/57cd0bba00244f598aa8284b60fe54a5
Autor:
Selahattin Gokceli, Toni Levanen, Taneli Riihonen, Juha Yli-Kaakinen, Alberto Brihuega, Matias Turunen, Markku Renfors, Mikko Valkama
Publikováno v:
IEEE Open Journal of the Communications Society, Vol 2, Pp 48-66 (2021)
The physical-layer radio access of 5G New Radio (NR) and other modern wireless networks builds on the cyclic prefix (CP) orthogonal frequency-division multiplexing (OFDM), known to suffer from the high peak-to-average power ratio (PAPR) challenge. In
Externí odkaz:
https://doaj.org/article/f5e559013375463497f3e35c28f97d38
Publikováno v:
IEEE Open Journal of the Communications Society, Vol 2, Pp 1188-1204 (2021)
This paper describes and investigates a novel concept of frequency-domain spectral shaping (FDSS) with spectral extension for the uplink (UL) coverage enhancement in 5G New Radio (NR), building on discrete Fourier transform spread orthogonal frequenc
Externí odkaz:
https://doaj.org/article/19547dd9670d45fdab535ca75fc87c7a
Autor:
Selahattin Gokceli, Pablo Pascual Campo, Toni Levanen, Juha Yli-Kaakinen, Matias Turunen, Markus Allen, Taneli Riihonen, Arto Palin, Markku Renfors, Mikko Valkama
Publikováno v:
IEEE Access, Vol 8, Pp 89946-89963 (2020)
In wireless communications, higher transmission power enables higher coverage or higher data rate. However, due to hardware limitations, achieving high power efficiency becomes challenging. The main issue is that at high power region close to power a
Externí odkaz:
https://doaj.org/article/80bf71efcc3a48658320c17f24208f84
Publikováno v:
Journal of Electrical and Computer Engineering, Vol 2012 (2012)
In modern wideband communication receivers, the large input-signal dynamics is a fundamental problem. Unintentional signal clipping occurs, if the receiver front-end with the analog-to-digital interface cannot respond to rapidly varying conditions. T
Externí odkaz:
https://doaj.org/article/96f5938c589f4b8cb60dd9301765a4ba
Publikováno v:
IEEE Transactions on Vehicular Technology. 72:5378-5383
Frequency-selective peak-to-average power ratio (PAPR) reduction is essential in networks such as 5 G New Radio (NR) that support frequency-domain multiplexing of users and services. However, stemming from the frequency-selective shaping of the invol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::18be8d5e6ea2c23d2c90761a955169bc
https://doi.org/10.1109/tvt.2022.3223157
https://doi.org/10.1109/tvt.2022.3223157
Autor:
Toni Levanen, Arto Palin, Juha Yli-Kaakinen, Markku Renfors, Mikko Valkama, Kari Pajukoski, AlaaEddin Loulou
Publikováno v:
IEEE Transactions on Wireless Communications. 20:6867-6883
Orthogonal frequency-division multiplexing (OFDM) has been selected as the basis for the fifth-generation new radio (5G-NR) waveform developments. However, effective signal processing tools are needed for enhancing the OFDM spectrum in various advanc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::77e394f0d51395e67888a04905435d2f
https://doi.org/10.1109/twc.2021.3077762
https://doi.org/10.1109/twc.2021.3077762
Publikováno v:
IEEE Open Journal of the Communications Society, Vol 2, Pp 1188-1204 (2021)
This paper describes and investigates a novel concept of frequency-domain spectral shaping (FDSS) with spectral extension for the uplink (UL) coverage enhancement in 5G New Radio (NR), building on discrete Fourier transform spread orthogonal frequenc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a84e1551825c85710e955430810674e
https://ieeexplore.ieee.org/document/9438710/
https://ieeexplore.ieee.org/document/9438710/
Publikováno v:
IEEE Transactions on Signal Processing. 68:1213-1228
This paper proposes a generalized model and methods for fast-convolution (FC)-based waveform generation and processing with specific applications to fifth generation new radio (5G-NR). Following the progress of 5G-NR standardization in 3rd generation
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9504a7902dccdb3bf759c5295950878c
https://doi.org/10.1109/tsp.2020.2971949
https://doi.org/10.1109/tsp.2020.2971949