Zobrazeno 1 - 10
of 1 074
pro vyhledávání: '"Quadrature Amplitude Modulation (QAM)"'
Publikováno v:
IEEE Access, Vol 12, Pp 182872-182882 (2024)
Odd-bit quadrature amplitude modulations (QAMs) can achieve higher data rates than even-bit QAMs in some signal-to-noise (SNR) regions but they have not been used in wireless communication standards due to its high demapping complexity. In this paper
Externí odkaz:
https://doaj.org/article/1d38108e338a45ea9d14ae87e030ecaf
Publikováno v:
IEEE Open Journal of Circuits and Systems, Vol 5, Pp 314-327 (2024)
This paper describes an analog multi-tone receiver capable of processing three data streams running at 15 Gb/s, one in baseband and two in quadrature over carriers at 15GHz, achieving an aggregate rate of 45Gb/s over a single physical channel. The re
Externí odkaz:
https://doaj.org/article/99562290ceea43bd861c9aaf7f52e319
Autor:
Jiexin Chen, Qi Zhang, Qihan Zhao, Xiangjun Xin, Ran Gao, Haipeng Yao, Feng Tian, Yongjun Wang, Qinghua Tian, Leijing Yang, Lan Rao, Fu Wang, Sitong Zhou
Publikováno v:
Photonics, Vol 11, Iss 7, p 584 (2024)
In this paper, a subset-optimized eight-dimensional trellis-coded quadrature amplitude modulation (SO-8DTCM-16QAM) format for higher-order constellations in high-speed optical communications is proposed. This scheme increases the number of subsets of
Externí odkaz:
https://doaj.org/article/45fa9fa1f32c459890858ef1a0b6e545
Publikováno v:
Zanco Journal of Pure and Applied Sciences, Vol 35, Iss SpB (2023)
In the setting of 5th generation, where the amount of information transferred has drastically expanded along with the skills of communication system attackers, the necessity for a strong security system has garnered crucial relevance. This work propo
Externí odkaz:
https://doaj.org/article/7fb566f5b8864dddb6b807b0e6b270bc
Autor:
Joydev Ghosh, Cesar Vargas-Rosales, Luciano Leonel Mendes, In-Ho Ra, Van Nhan Vo, Phet Aimtongkham, Chakchai So-In
Publikováno v:
IEEE Access, Vol 11, Pp 135609-135625 (2023)
Multiuser gigantic-multiple-input multiple-output (MU-gMIMO) and nonorthogonal multiple access (NOMA) are jointly seen as important enabling technologies for sixth generation (6G) networks. They have many benefits, such as spatial multiplexing, spati
Externí odkaz:
https://doaj.org/article/978353a7d31f49ccbfbf8c57298dcbf0
Akademický článek
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Akademický článek
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Publikováno v:
IEEE Open Journal of Circuits and Systems, Vol 2, Pp 65-77 (2021)
Limits of data rate over a wireline channel depend on the channel characteristics, the signaling or modulation scheme, and the complexity one can afford for its implementation. This article compares two signaling schemes, namely baseband and discrete
Externí odkaz:
https://doaj.org/article/bbf6d30847784ebc9313bd4d53ca70a9
Publikováno v:
IEEE Open Journal of the Communications Society, Vol 2, Pp 602-616 (2021)
Ultraviolet communication (UVC) is emerging as an attractive alternative to the existing optical wireless communication (OWC) technologies. UVC experiences negligible noise on the earth’s surface, and also has the ability to operate in non-line-of-
Externí odkaz:
https://doaj.org/article/c9a9c8efbff349a69c8b91201e803931
Autor:
Wei-Lun Lin, Fan-Shuo Tseng
Publikováno v:
IEEE Access, Vol 9, Pp 93111-93118 (2021)
Active constellation extension (ACE) was originally developed to reduce the peak-to-average-power ratio (PAPR) in orthogonal frequency division multiplexing (OFDM) systems with quadrature amplitude modulation (QAM). Alternatively, ACE can be a promis
Externí odkaz:
https://doaj.org/article/2a9464423e9d44ef90e41b21796b15c3