Results 171 to 180 of about 4,370 (213)

Quantum-inspired adaptive simulated annealing for antenna selection and joint optimization in RIS-assisted MIMO-NOMA systems. [PDF]

Sci Rep
Farghaly SI, Dawood HS, Fouda HS.
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A Broader Survey on 6G Radio Resource Management. [PDF]

Sensors (Basel)
de Faria AJ, Brito JMC, Spadoti DH, Borges RM.   +3 more
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A Novel Starfish Optimization Algorithm for Secure STAR-RIS Communications. [PDF]

Biomimetics (Basel)
Gafar M, Sarhan S, Shaheen AM, Alwakeel AS.   +3 more
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Cyber metasurface system for electromagnetic field closed-loop sensing and manipulation. [PDF]

Commun Eng
Xuan X, Wu B, Chen Y, Cen W, Zhou Y, Zheng S, Hui X, Zhang X.   +7 more
europepmc   +1 more source

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MIMO Hybrid Beamforming

2023
In mmWave massive MIMO, the required number of radio frequency (RF) chains becomes impractical due to the expensive and power-hungry components such as variable gain power amplifiers, filters, mixers, and analog-to-digital/digital-to-analog converters (ADCs/DACs). A promising solution to this problem is reducing the number of radiofrequency (RF) chains
Mostafa Hefnawi, Jamal Zbitou
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Analysis of diversity, beamforming and hybrid diversity-beamforming systems

2003 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2003. Proceedings. (ICASSP '03)., 2004
In this paper we compare Shannon capacities of diversity, beamforming, and hybrid diversity-beamforming systems for reverse and forward links. Our results show that the reverse link capacity of a diversity system is higher than that of a beamforming system, while the beamforming system can provide higher capacity than the diversity system in the ...
Mahdi Nezafat, Mostafa Kaveh
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Deep Learning for SVD and Hybrid Beamforming

IEEE Transactions on Wireless Communications, 2020
Hybrid beamforming (BF), which divides BF operation into radio frequency (RF) and baseband (BB) domains, will play a critical role in MIMO communication at millimeter-wave (mmW) frequencies. In principle, we can obtain unconstrained (optimum) beamformers of a transceiver, which approach the maximum achievable data rates, through its singular value ...
Ture Peken, Sudarshan Adiga, Ravi Tandon, Tamal Bose   +3 more
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Robust beamforming method for SDMA with interleaved subarray hybrid beamforming

2016 IEEE 27th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC), 2016
This paper considers millimeter-wave access network systems with space division multiple access using an interleaved subarray hybrid beamforming structure, where antenna elements in each subarray scatter uniformly over the whole antenna array. The structure can provide high system capacity by multiplexing users in the space domain with narrow beams ...
Shunsuke Fujio, Chikara Kojima, Toshihiro Shimura, Ken-ichi Nishikawa, Kazuyuki Ozaki, Zhengyi Li 0001, Atsushi Honda, Shohei Ishikawa, Takenori Ohshima, Hiroshi Ashida, Masahiko Shimizu, Yoji Ohashi   +11 more
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Millimeter-Wave NOMA with Hybrid Beamforming

2019 IEEE International Conference on Communications Workshops (ICC Workshops), 2019
This paper investigates the application of nonorthogonal multiple access in millimeter-Wave communications (mmWave-NOMA) with hybrid beamforming. A user grouping algorithm is first proposed according to channel gains and channel correlations. Whereafter, a joint hybrid beamforming and power allocation problem is formulated to maximize the achievable ...
Lipeng Zhu 0001, Jun Zhang 0007, Zhenyu Xiao, Xianbin Cao 0001   +3 more
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