Zobrazeno 1 - 10
of 156
pro vyhledávání: '"achievable sum rate"'
Akademický článek
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Autor:
Hye Yeong Lee, Soo Young Shin
Publikováno v:
IEEE Access, Vol 10, Pp 27211-27222 (2022)
Non-orthogonal multiple access (NOMA) is a promising candidate beyond 5G and 6G to improve spectral efficiency by sharing the same resource block with other users. However, as the number of users increases in a single NOMA cluster, not only the spect
Externí odkaz:
https://doaj.org/article/ab80a8de0f5943df944a478e21f6b9ed
Akademický článek
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K zobrazení výsledku je třeba se přihlásit.
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Autor:
Muntadher Alsabah, Marwah Abdulrazzaq Naser, Basheera M. Mahmmod, Nor K. Noordin, Sadiq H. Abdulhussain
Publikováno v:
IEEE Access, Vol 9, Pp 108793-108808 (2021)
The increasing demand for higher data rates motivates the exploration of advanced techniques for future wireless networks. To this end, massive multiple-input multiple-output (mMIMO) is envisioned as the most essential technique to meet this demand.
Externí odkaz:
https://doaj.org/article/ffbf175eec2c4e02a7476ff2213fec5c
Autor:
Kapila W. S. Palitharathna, Himal A. Suraweera, Roshan I. Godaliyadda, Vijitha R. Herath, John S. Thompson
Publikováno v:
IEEE Open Journal of the Communications Society, Vol 2, Pp 2292-2310 (2021)
In this paper, we consider a cooperative non-orthogonal multiple access (NOMA) aided underwater optical wireless system in which the source transmits to two users where the near user serves as a relay node to the far user. Our proposed system consist
Externí odkaz:
https://doaj.org/article/c9dc56b0ea6f43eeb7a08c8e799b42c4
Publikováno v:
IEEE Access, Vol 8, Pp 108731-108747 (2020)
This paper considers the problem of downlink (DL) training sequence design with limited coherence time for frequency division duplex (FDD) massive MIMO systems in a general scenario of single-stage precoding and distinct spatial correlations between
Externí odkaz:
https://doaj.org/article/f928947e3e434b2db549f07d238ea6c9
Publikováno v:
IEEE Access, Vol 8, Pp 149412-149434 (2020)
Developing high data rate systems to meet the requirements of fifth generation mobile systems has become crucial. Hybrid radio frequency/visible light communication (RF/VLC) has appeared as a promising mechanism for achieving this objective. In hybri
Externí odkaz:
https://doaj.org/article/3c75a1ae12424a09afa336401d0e3b03
Publikováno v:
IEEE Access, Vol 8, Pp 194912-194924 (2020)
The use of MIMO networks in wireless communication results in increased data rate but leads to severe interference issues and power losses. Promising beamforming (BF) architecture with Conditional Time split-Energy Extraction (CT-EE) is proposed to m
Externí odkaz:
https://doaj.org/article/159b943c4fbb4106a06a4deb8ae2483e
Publikováno v:
IEEE Access, Vol 8, Pp 170769-170778 (2020)
A novel downlink transmission selection scheme based on the locations of users for network coded cache-enabled, Multiple-Input Multiple-Output (MIMO) systems is proposed in this paper. Caches are available at both base stations (BSs) and mobile termi
Externí odkaz:
https://doaj.org/article/cdaa84fb566842af860339512de734a2
Publikováno v:
Dianxin kexue, Vol 35, Pp 92-99 (2019)
Aiming at the problem of pilot contamination in massive MIMO systems,a pilot allocation scheme based on users’ location and user classification was proposed.The scheme designed the objective function and reasonable threshold based on path loss and
Externí odkaz:
https://doaj.org/article/2a0d37cb89e847e6b66611f5014d55b7