Results 101 to 110 of about 152,630 (212)

Location‐Assisted Graph‐Based User Scheduling in Multi‐User MIMO LEO NTN Systems

International Journal of Satellite Communications and Networking, Volume 44, Issue 3, Page 275-287, May/June 2026.
ABSTRACT This paper addresses user clustering and scheduling for multi‐user MIMO low Earth orbit nonterrestrial network systems in full frequency reuse. Since the number of on‐ground user terminals is usually much higher than the number of on‐board LEO satellite antennas, user scheduling becomes a fundamental task.
Bilal Ahmad, Daniel Gaetano Riviello, Bruno De Filippo, Alessandro Guidotti, Alessandro Vanelli‐Coralli   +4 more
wiley   +1 more source

Multi-Satellite MIMO Communications at Ku-Band and Above: Investigations on Spatial Multiplexing for Capacity Improvement and Selection Diversity for Interference Mitigation

EURASIP Journal on Wireless Communications and Networking, 2007
This paper investigates the applicability of multiple-input multiple-output (MIMO) technology to satellite communications at the Ku-band and above. After introducing the possible diversity sources to form a MIMO matrix channel in a satellite environment,
Konstantinos P. Liolis, Athanasios D. Panagopoulos, Panayotis G. Cottis   +2 more
doaj   +1 more source

Millimeter‐Wave Antennas: A Comprehensive State‐of‐the‐Art Review of Design Approaches, Operating Bands, Challenges, and Applications in Body‐Centric and Emerging Systems

Radio Science, Volume 61, Issue 5, May 2026.
Abstract This paper reviews and classifies more than 120 recent contributions on millimeter‐wave (mm‐wave) antennas, with emphasis on their operating bands, design methods, and application domains. It surveys the main mm‐wave frequency ranges and their use in 5G/6G communications, radar and sensing, biomedical and body‐centric systems, imaging, and ...
Sarra Khacha, Chemseddine Zebiri, Mohammad Alibakhshikenari, Djamel Sayad, Issa Elfergani, Muhammad Akmal Chaudhary, Nisar Ahmad Abbasi, Arpan Desai, Jonathan Rodriguez, Takfarinas Saber, Ernesto Limiti   +10 more
wiley   +1 more source

Modeling and Performance Analysis of Energy Efficiency Binary Power Control in MIMO-OFDM Wireless Communication Systems

International Journal of Distributed Sensor Networks, 2011
The energy efficiency optimization of the binary power control scheme for MIMO-OFDM wireless communication systems is formulated, and then a global optimization solution of power allocation is derived.
Yuming Wang, Xiaohu Ge, Chengqian Cao, Xi Huang, Frank Y. Li   +4 more
doaj   +1 more source

Iterative Power Control for Maximizing Spectral Efficiency in Cell-Free Massive MIMO Systems

IEEE Access
This study investigates power control algorithms for cell-free massive MIMO (CF-M-MIMO) systems, with the aim of enhancing spectral efficiency (SE) and overall system capacity.
Osman Dikmen
doaj   +1 more source

CSI Feedback Based on Deep Learning for Massive MIMO Systems

IEEE Access, 2019
Aiming at the problem of high complexity and low feedback accuracy of existing channel state information (CSI) feedback algorithms for frequency-division duplexing (FDD) massive multiple-input multiple-output (MIMO) systems, this paper proposes a CSI ...
Yong Liao, Haimei Yao, Yuanxiao Hua, Chunguo Li   +3 more
doaj   +1 more source

LMI-based Controller Design for Leaky-integrator MIMO Systems

Applications of Modelling and Simulation
Leaky-integrator systems have attracted attention due to their capability of capturing the gradual loss of the system states. Thanks to the advantages of taking into consideration the leaky effect on gradual loss of systems states, leaky-integrator ...
Hao Deng, Cristina Stoica, Mohammed Chadli, Daniel Ossmann   +3 more
doaj  

A Switched Diversity Scheme for Massive MIMO Systems

International Journal of Antennas and Propagation, 2014
With the constraint of antenna space, spatial correlation and mutual coupling must be considered to accurately predict the system performance for massive MIMO systems.
Qianya Wang, Hongwen Yang
doaj   +1 more source

Semi-blind adaptive spatial equalisation for MIMO systems with high-order QAM signalling

, 2008
This contribution investigates semi-blind adaptive spatial filtering or equalisation for multiple-input multiple-output (MIMO) systems that employ high-throughput quadrature amplitude modulation (QAM) signalling.
Chen, Sheng, Hanzo, Lajos, Yao, Wang
core  

Reconfigurable intelligent surface-empowered MIMO systems. [PDF]

Natl Sci Rev, 2023
Basar E.
europepmc   +1 more source