Zobrazeno 1 - 10
of 179
pro vyhledávání: '"modulation OFDM"'
Publikováno v:
IEEE Access, Vol 12, Pp 44013-44022 (2024)
In this paper, we first propose a novel code rate optimized orthogonal frequency division multiplexing with index modulation (OFDM-IM) transceiver architecture based on new radio low-density parity-check (NR-LDPC) coding, referred to as Rate Optimiza
Externí odkaz:
https://doaj.org/article/392c5ff1e2304cdea86c3938e2024f40
Autor:
Junghyun Kim, Hosung Park
Publikováno v:
IEEE Access, Vol 11, Pp 130358-130367 (2023)
Every existing deep learning (DL)-based detector for orthogonal frequency division multiplexing with index modulation (OFDM-IM) is optimized for one instance for modulation parameters (MPs) such as the modulation orders and the number of active subca
Externí odkaz:
https://doaj.org/article/0ee37459215b4af5938e28008150b2fe
Autor:
Hany S. Hussein, Turki M. Alanazi, Mohammed Zubair Shamim, Mohammed Sayeeduddin Habeeb, Mohammed Usman, Mohammed Farrag
Publikováno v:
IEEE Access, Vol 9, Pp 46975-46984 (2021)
A novel fully quadrature subcarrier-index shift keying orthogonal frequency division multiplexing (FQSISK-OFDM) modulation scheme for underwater acoustic communications (UWAC) is proposed in this paper. In the FQSISK, the data is conveyed by active a
Externí odkaz:
https://doaj.org/article/81c9253e44c24ff1911e74173206c6c9
Publikováno v:
IEEE Access, Vol 8, Pp 103073-103087 (2020)
In this work, a collaborative blind equalization method for the orthogonal frequency division multiplexing (OFDM) signals in time-varying channels is presented. Equalizers are eliminated the inter-symbol interference (ISI) in the received signals cau
Externí odkaz:
https://doaj.org/article/b1c952038f61433f8adb7addc371b297
Publikováno v:
IEEE Access, Vol 8, Pp 205657-205668 (2020)
Optical orthogonal frequency-division multiplexing offset quadrature amplitude modulation (O-OFDM/OQAM) system relaxes the orthogonal condition of the sub-carriers from the complex domain to the real field. Inter-symbol-interference (ISI) and inter-c
Externí odkaz:
https://doaj.org/article/5a4ed9a3babc4d9cb1fa53c6a9cc0eb8
Publikováno v:
IEEE Access, Vol 8, Pp 170044-170056 (2020)
One of the greatest challenges facing the physical layer design of the internet of things (IoT) resides in the imposed constraint of very low power consumption. Recently, new modulation scheme termed OFDM with sparse index modulation (OFDM-SIM) has b
Externí odkaz:
https://doaj.org/article/d20f113070d049d086bf106ae8e31005
Publikováno v:
IEEE Access, Vol 8, Pp 204931-204940 (2020)
Recently, dynamic optical network has attracted wide concern for its high efficiency and flexible configurations. Known for high spectral efficiency and flexible allocations of frequency resources orthogonal frequency-division multiplexing offset-qua
Externí odkaz:
https://doaj.org/article/a6f6adfbc10a41dba5b62dba8be13fdf
Akademický článek
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Publikováno v:
IEEE Access, Vol 7, Pp 23930-23939 (2019)
Recently, orthogonal frequency division multiplexing (OFDM) with index modulation has emerged as promising technologies with the improvement of spectral efficiency and energy efficiency, which carries additional index bits through the index domain. I
Externí odkaz:
https://doaj.org/article/a960ec2d252248238ed3baf0d46e5bd7
Autor:
Samah A. Mustafa
Publikováno v:
ARO-The Scientific Journal of Koya University, Vol 6, Iss 2, Pp 49-55 (2018)
This work is looking for a new physical layer of a multi-carrier wireless communication system to be implemented in low complexity way, resorting to suitable fast transform. The work presents and assesses a scheme based on Discrete Trigonometric Tran
Externí odkaz:
https://doaj.org/article/581b180d9fff43a0beb2f70f2ce807d0