Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Afshin Haghighat"'
Publikováno v:
IEEE Access, Vol 10, Pp 72348-72362 (2022)
Hybrid analog-digital signal processing (HSP) is an enabling technology to harvest the potential of millimeter-wave (mmWave) massive-MIMO communications. In this paper, we present a general deep learning (DL) framework for efficient design and implem
Externí odkaz:
https://doaj.org/article/2214eddc66c548b188b0ddc790ca8297
Publikováno v:
IEEE Access, Vol 8, Pp 100262-100279 (2020)
The conventional fully-digital implementation of massive-MIMO systems is not efficient due to the large required number of radio-frequency (RF) chains. To address this issue, hybrid analog/digital (A/D) beamforming was proposed and to date remains a
Externí odkaz:
https://doaj.org/article/027842351b8d43779703e93114ad7f8e
Autor:
M. Reza Soleymani, Afshin Haghighat
Publikováno v:
EURASIP Journal on Advances in Signal Processing, Vol 2005, Iss 5, Pp 649-657 (2005)
A blind scheme based on multiple-signal classification (MUSIC) algorithm for user identification in a synchronous multiuser code-division multiple-access (CDMA) system is suggested. The scheme is blind in the sense that it does not require prior know
Externí odkaz:
https://doaj.org/article/031db67402f04617aa5c3ef51611c063
Publikováno v:
IEEE Access, Vol 8, Pp 100262-100279 (2020)
The conventional fully-digital implementation of massive-MIMO systems is not efficient due to the large required number of radio-frequency (RF) chains. To address this issue, hybrid analog/digital (A/D) beamforming was proposed and to date remains a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c5765ee5fc5816e5501c292e8672041c
https://ieeexplore.ieee.org/document/9102249/
https://ieeexplore.ieee.org/document/9102249/
Autor:
Arman Shojaeifard, Kai-Kit Wong, Kin-Fai Tong, Zhiyuan Chu, Alain Mourad, Afshin Haghighat, Ibrahim Hemadeh, Nhan Thanh Nguyen, Visa Tapio, Markku Juntti
With massive deployment, multiple-input–multiple-output (MIMO) systems continue to take mobile communications to new heights, but the ever-increasing demands mean that there is a need to look beyond MIMO and pursue the next disruptive wireless tech
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d0c5df242946f8a284ab1559dba3e20f
http://urn.fi/urn:nbn:fi-fe2022100661285
http://urn.fi/urn:nbn:fi-fe2022100661285
Autor:
Zeeshan Sattar, Afshin Haghighat
Publikováno v:
PIMRC
This paper introduces the concept of a nearly passive reconfigurable intelligent surface where each unit cell can only provide an invariable constant phase-shift. A simple unit cell selection method is also proposed to engineer the incident wave's pr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d1396c42d6c003b7eb7b9f15d90c10c6
https://doi.org/10.1109/pimrc50174.2021.9569529
https://doi.org/10.1109/pimrc50174.2021.9569529
Publikováno v:
2021 IEEE 94th Vehicular Technology Conference (VTC2021-Fall).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2f4d6df037694620b7bc35eb81c712a1
https://doi.org/10.1109/vtc2021-fall52928.2021.9625296
https://doi.org/10.1109/vtc2021-fall52928.2021.9625296
Publikováno v:
VTC Spring
Non-orthogonal multiple access (NOMA) has been studied during the standardization of the new radio (NR), fifth generation (5G) of mobile communications systems. It has been shown that NOMA could potentially offer a robust performance in highly interf
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c7f4939724e98b0d5732b1642a09769a
https://doi.org/10.1109/vtc2020-spring48590.2020.9129031
https://doi.org/10.1109/vtc2020-spring48590.2020.9129031
Publikováno v:
CCNC
In this paper, a new metric for design of spreading sequences in non-orthogonal multiple access (NOMA) systems is introduced. We show that while achieving Welch bound equality (WBE) in designing spreading sequences is important, the kurtosis of the c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7a15982d3c1ec039c684f54b7d496f81
https://doi.org/10.1109/ccnc46108.2020.9045320
https://doi.org/10.1109/ccnc46108.2020.9045320
Publikováno v:
IEEE Communications Letters. 21:2310-2313
In this letter, the minimum number of required radio frequency (RF) chains for realizing any MIMO fully digital precoder (FDP) with the hybrid analog/digital precoder (HADP) architecture is investigated from a new perspective. First, in order to take
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a98b0822a4f5b56f5e1b58fb111f2ea0
https://doi.org/10.1109/lcomm.2017.2717824
https://doi.org/10.1109/lcomm.2017.2717824