Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Alireza Haqiqatnejad"'
Publikováno v:
IEEE Open Journal of the Communications Society, Vol 5, Pp 3468-3483 (2024)
An important part of designing non-geostationary satellite orbit (NGSO) constellations is to ensure that they can co-exist with the legacy geostationary satellite orbit (GSO) systems in terms of interference levels. According to the current radio reg
Externí odkaz:
https://doaj.org/article/22e058f6da3443ddb0962c6adbdf7ab3
Autor:
Liz Martinez Marrero, Alireza Haqiqatnejad, Juan C. Merlano Duncan, Symeon Chatzinotas, Bjorn Ottersten
Publikováno v:
IEEE Open Journal of Vehicular Technology, Vol 4, Pp 127-148 (2023)
Linear and symbol-level precoding in satellite communications have received increasing research attention thanks to their ability to tackle inter-beam interference, allowing the use of spectral resources more efficiently. However, there are still cha
Externí odkaz:
https://doaj.org/article/a979fee07d4b4c22a27cb849137b764f
Autor:
Alireza Haqiqatnejad, Jevgenij Krivochiza, Juan Carlos Merlano Duncan, Symeon Chatzinotas, Bjorn Ottersten
Publikováno v:
IEEE Access, Vol 9, Pp 30698-30711 (2021)
This paper proposes and validates a low-complexity FPGA design for symbol-level precoding (SLP) in multiuser multiple-input single-output (MISO) downlink communication systems. In the optimal case, the symbol-level precoded transmit signal is obtaine
Externí odkaz:
https://doaj.org/article/f5d88227cf4943e5963e89a1b1e9f6f5
Autor:
M. Mahdi Azari, Sourabh Solanki, Symeon Chatzinotas, Oltjon Kodheli, Hazem Sallouha, Achiel Colpaert, Jesus Fabian Mendoza Montoya, Sofie Pollin, Alireza Haqiqatnejad, Arsham Mostaani, Eva Lagunas, Bjorn Ottersten
Publikováno v:
IEEE Communications Surveys & Tutorials. 24:2633-2672
Non-terrestrial networks (NTNs) traditionally have certain limited applications. However, the recent technological advancements and manufacturing cost reduction opened up myriad applications of NTNs for 5G and beyond networks, especially when integra
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e36dfd1801519a8262718fe83b868748
https://doi.org/10.1109/comst.2022.3199901
https://doi.org/10.1109/comst.2022.3199901
Publikováno v:
IEEE Transactions on Communications. 69:3119-3134
We address the symbol-level precoding design problem for the downlink of a multiuser millimeter wave (mmWave) multiple-input multiple-output (MIMO) wireless system where the transmitter is equipped with a large-scale antenna array. The high cost and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d5e98fbc971fd9357bafd3efaa98c468
https://doi.org/10.1109/tcomm.2021.3058967
https://doi.org/10.1109/tcomm.2021.3058967
Publikováno v:
IEEE Transactions on Signal Processing. 69:5595-5610
We propose a finite-alphabet symbol-level precoding technique for massive multiuser multiple-input multiple-output (MU-MIMO) downlink systems which are equipped with finite-resolution digital-to-analog converters (DACs) of any precision. Using the id
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4e7aed6249225d41380955d1548cab2d
https://doi.org/10.1109/tsp.2021.3113803
https://doi.org/10.1109/tsp.2021.3113803
Autor:
Symeon Chatzinotas, Bjorn Ottersten, Alireza Haqiqatnejad, Jevgenij Krivochiza, Juan Carlos Merlano Duncan
Publikováno v:
IEEE Access, Vol 9, Pp 30698-30711 (2021)
This paper proposes and validates a low-complexity FPGA design for symbol-level precoding (SLP) in multiuser multiple-input single-output (MISO) downlink communication systems. In the optimal case, the symbol-level precoded transmit signal is obtaine
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad57bd4729f8a4c36ef69fa3835f0b11
https://ieeexplore.ieee.org/document/9355138/
https://ieeexplore.ieee.org/document/9355138/
Energy-Efficient Hybrid Symbol-Level Precoding via Phase Shifter Selection in mmWave MU-MIMO Systems
Publikováno v:
GLOBECOM
We address the symbol-level precoding design problem for the downlink of a multiuser millimeter wave (mmWave) multiple-input multiple-output wireless system. We consider a hybrid analog-digital architecture with phase shifter selection where a small-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d629b58f1bd3fc7184ab161995c26f4b
https://doi.org/10.1109/globecom42002.2020.9322573
https://doi.org/10.1109/globecom42002.2020.9322573
Publikováno v:
ICC
We propose a one-bit symbol-level precoding method for massive multiuser multiple-input multiple-output (MU-MIMO) downlink systems using the idea of constructive interference (CI). In particular, we adopt a max-min fair design criterion which aims to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d90e45cb37900e7e9458503db590c9c4
https://doi.org/10.1109/icc40277.2020.9148679
https://doi.org/10.1109/icc40277.2020.9148679
Publikováno v:
SPAWC
In this paper, we investigate a simultaneous wireless information and power transmission (SWIPT) system, wherein a single multi-antenna transmitter serves multiple single-antenna users which employ the power-splitting (PS) receiver architecture. We f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2b6cd157cc86202dd4bfa1d7699ab0bd
http://orbilu.uni.lu/handle/10993/43218
http://orbilu.uni.lu/handle/10993/43218
