Zobrazeno 1 - 10
of 166
pro vyhledávání: '"Osamu Muta"'
Autor:
Abdul-Baaki Yakubu, Ahmed H. Abd El-Malek, Mohammed Abo-Zahhad, Osamu Muta, Maha M. Elsabrouty
Publikováno v:
IEEE Access, Vol 12, Pp 124330-124348 (2024)
With the rise of intelligent transportation (ITS), autonomous cars, and on-the-road entertainment and computation, vehicular edge computing (VEC) has become a primary research topic in 6G and beyond communications. On the other hand, reconfigurable i
Externí odkaz:
https://doaj.org/article/be6dd49a745545ca856ba7e61bda1847
Autor:
Boniface Uwizeyimana, Mohammed Abo-Zahhad, Osamu Muta, Ahmed H. Abd El-Malek, Maha M. Elsabrouty
Publikováno v:
IEEE Access, Vol 12, Pp 87167-87180 (2024)
Unmanned aerial vehicles (UAVs) are expected to be integrated into future wireless networks to offer services, especially in unreachable or congested areas. To improve the spectral efficiency, non-orthogonal multiple access (NOMA) scheme can be utili
Externí odkaz:
https://doaj.org/article/e142a552a5b343c58ed8db0834059028
Publikováno v:
IEEE Access, Vol 9, Pp 136334-136345 (2021)
In this paper, the tradeoff between spectrum efficiency (SE) and energy efficiency (EE) is investigated in terms of interference management and power allocation for heterogeneous networks (HetNets) with non-orthogonal multiple access (NOMA). The EE a
Externí odkaz:
https://doaj.org/article/74ce275d360e47268e97775ef32aaef9
Autor:
Sherief Hashima, Osamu Muta
Publikováno v:
EURASIP Journal on Wireless Communications and Networking, Vol 2020, Iss 1, Pp 1-12 (2020)
Abstract In massive MIMO (mMIMO) systems, large matrix inversion is a challenging problem due to the huge volume of users and antennas. Neumann series (NS) and successive over relaxation (SOR) are two typical methods that solve such a problem in line
Externí odkaz:
https://doaj.org/article/ed344cd787da40faaf77fdcd944bb739
Publikováno v:
IEEE Access, Vol 8, Pp 73420-73431 (2020)
This paper presents an enhanced peak cancellation method with simplified in-band distortion compensation for massive multi-input multi-output (mMIMO) orthogonal frequency division multiplexing (OFDM). The method compensates an in-band distortion due
Externí odkaz:
https://doaj.org/article/07a0c954e97842f1a2f30372191dce6b
Publikováno v:
IEEE Access, Vol 7, Pp 76283-76294 (2019)
In this paper, a downlink cooperative channel estimation scheme is proposed for the three-dimensional massive multiple inputs multiple outputs (3D-mMIMO) system operating in the frequency division duplexing (FDD) mode. In the proposed cooperative sch
Externí odkaz:
https://doaj.org/article/a3a54ba739884a56bf508a1ccfc6fc02
Autor:
Mohamed S. Abdalzaher, Osamu Muta
Publikováno v:
IEEE Access, Vol 7, Pp 132923-132936 (2019)
The rapid development of wireless sensor networks (WSNs) is a significant incentive to contribute to vulnerable applications such as cognitive radio (CR). This paper proposes a Stackelberg game approach to enhance the WSN-based CR security against th
Externí odkaz:
https://doaj.org/article/80f80af76cef4ce1b844330eb4efc788
Publikováno v:
IEEE Access, Vol 7, Pp 98495-98506 (2019)
In this paper, a novel interference management technique based on compressive sensing (CS) theory is investigated for downlink non-orthogonal multiple access (NOMA) heterogeneous networks (HetNets). We mathematically formulate the interference manage
Externí odkaz:
https://doaj.org/article/0bb6a74495b24e689e6b09d5fd00da77
Publikováno v:
IEEE Access, Vol 6, Pp 11086-11100 (2018)
In this paper, we propose game-theoretic approaches to model the cooperative spectrum sensing in cognitive radio environment with cognitive secondary users (SU) capable of energy harvesting. An evolutionary game model is considered in the first scena
Externí odkaz:
https://doaj.org/article/8ef28e45f48b4b99b66de6a1af90f143
Publikováno v:
IEEE Access, Vol 6, Pp 50860-50874 (2018)
Recently, attention has been paid to the integration of opportunistic communications, whether based on opportunistic user selection (OUS) or opportunistic antenna selection, with interference alignment (IA) in order to improve the performance of wire
Externí odkaz:
https://doaj.org/article/d2a34118eca24f429888f3e4f88de237