Results 31 to 40 of about 7,874 (186)
IET Networks, EarlyView., 2023 We utilise a metaheuristic optimisation method, inspired by nature, called the Lévy‐flight firefly algorithm (LFA), to tackle the power regulation and user grouping in the NOMA systems. Abstract The non‐orthogonal multiple access strategies have shown promise to boost fifth generation and sixth generation wireless networks' spectral efficiency and ...
Zaid Albataineh +4 more
wiley +1 more source
Weighted target detector via estimated SNR in a multipath environment
The Journal of Engineering, 2019 Multipath effect cause serious performance degradation in low-altitude target detection. To overcome the negative multipath effect in a low-altitude environment, a novel weighted detector based on the estimated signal-to-noise ratio (ESNR) is proposed ...
Hao Zhou +3 more
doaj +1 more source
EURASIP Journal on Wireless Communications and Networking, 2011 A relatively recent idea of extending the benefits of MIMO systems to multiuser scenarios seems promising in the context of achieving high data rates envisioned for future cellular standards after 3G (3rd Generation). Although substantial research has been done on the theoretical front, recent focus is on making Multiuser Multiple-Input Multiple-Output
Deepaknath Tandur +10 more
openaire +2 more sources
Algerian Journal of Signals and Systems, 2020 MIMO systems constitute a backbone of the fourth and fifth generations of wireless communication systems. The purpose of this paper is to introduce the involvement of conformal antenna arrays into MIMO systems.
Abdelmadjid RECIOUI
doaj +1 more source
Results in Physics, 2023 In order to understand the signal detection design of large-scale MIMO physical layer spatial optical communication systems, the author proposes a research on signal detection of large-scale MIMO physical layer spatial optical communication systems based
Min Ma
doaj +1 more source
MIMO Systems With Adaptive Modulation
IEEE Transactions on Vehicular Technology, 2005 Adaptive modulation (AM) schemes in multiple input multiple output (MIMO) systems with a perfect or imperfect channel state information (CSI) at both the transmitter and receiver were investigated. Under an average transmit power and instantaneous bit error rate (BER) constraint, the transmit parameters including the subchannel transmit power and/or ...
Zhendong Zhou +3 more
openaire +2 more sources
Controllability of networked MIMO systems [PDF]
Automatica, 2016 15 pages, 4 ...
Lin Wang 0022 +3 more
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Joint interference alignment and power allocation for NOMA-based multi-user MIMO systems
EURASIP Journal on Wireless Communications and Networking, 2018 Interference alignment (IA) and non-orthogonal multiple access (NOMA) are key technologies for achieving the capacity scaling required by next generation networks to overcome the unprecedented growth of data network traffic.
Mohamed Rihan, Lei Huang, Peichang Zhang
doaj +1 more source
EURASIP Journal on Advances in Signal Processing, 2008 Antenna (subset) selection techniques are feasible to reduce the hardware complexity of multiple-input multiple-output (MIMO) systems, while keeping the benefits of higher-order MIMO systems.
T. Kaiser, A. Wilzeck
doaj +1 more source
On the Sum Rate of MIMO-NOMA and MIMO-OMA Systems
IEEE Wireless Communications Letters, 2017 In this letter, the performance of non-orthogonal multiple access (NOMA) is compared with conventional orthogonal multiple access (OMA) over multiple-input multiple-output (MIMO) channels. It is proved analytically that for a simple scenario of two users, MIMO-NOMA dominates MIMO-OMA in terms of both sum rate and ergodic sum rate.
Ming Zeng 0002 +4 more
openaire +1 more source