Results 31 to 40 of about 2,958,782 (230)
IEEE Access, 2022 Beamforming is the fundamental concept of wireless communications to serve several users through multiple-antenna transceivers. The advent of massive multiple-input multiple-output (MIMO) systems leads to an investigation into beamforming to reach ...
Jamal Beiranvand +3 more
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Synthesis of efficient digital beamformers [PDF]
The Journal of the Acoustical Society of America, 1981 Digital interpolation beamforming [R. Pridham and R. Mucci, J. Acoust. Soc. Am. 63, 425–433 (1978)] permits a reduction in A/D conversion rate, telemetry bandwidth, and memory throughput, relative to nearest-sample-selection beamforming, at the expense of an increase in arithmetic operations.
Robert A. Gabel, Richard R. Kurth
openaire +1 more source
IEEE Journal on Selected Areas in Communications, 2020 Due to the severe pathloss experienced by electromagnetic waves in the millimeter wave (mmWave) band, a substantial challenge in their design is to have an adequate coverage area.
Yunlong Cai +5 more
semanticscholar +1 more source
A Case for Digital Beamforming at mmWave [PDF]
IEEE Transactions on Wireless Communications, 2019 Due to the heavy reliance of millimeter-wave (mmWave) wireless systems on directional links, beamforming (BF) with high-dimensional arrays is essential for cellular systems in these frequencies.
S. Dutta +5 more
semanticscholar +1 more source
Low Complexity and Robust Codebook-Based Analog Beamforming for Millimeter Wave MIMO Systems
IEEE Access, 2017 Millimeter-wave (mm-Wave) MIMO systems have been proposed to achieve higher spectral efficiency via the hybrid beamforming structure, which consists of analog beamforming and digital beamforming.
Yong Niu +5 more
doaj +1 more source
Transceiver Design in Millimeter Wave Full-Duplex Multi-User Massive MIMO Communication Systems
IEEE Access, 2021 We consider hybrid transmit precoding and receive combining in a millimeter wave (mmWave) multiple-input multiple-output (MIMO) multi-user cellular system, where a full-duplex (FD) base station (BS) serves multiple half-duplex (HD) uplink and downlink ...
Mostafa Darabi +2 more
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Fast Radix-32 Approximate DFTs for 1024-Beam Digital RF Beamforming [PDF]
IEEE Access, 2022 The discrete Fourier transform (DFT) is widely employed for multi-beam digital beamforming. The DFT can be efficiently implemented through the use of fast Fourier transform (FFT) algorithms, thus reducing chip area, power consumption, processing time ...
A. Madanayake +8 more
semanticscholar +1 more source
Alternating minimum mean square error hybrid beamforming algorithm in mmWave MIMO system
Dianxin kexue, 2017 The two-stage hybrid beamforming architecture can solve the problem of limited number of RF chains effectively.However,it is still difficult to design a hybrid beamforming algorithm with better performance.In order to achieve higher spectral efficiency ...
Min SHEN, Hao XU, Yun HE, Pengguang ZHOU
doaj +2 more sources
IEEE Access, 2019 Medium-scale or large-scale receive antenna array with digital beamforming can be employed at receiver to make a significant interference reduction but leads to expensive cost and high complexity of the RF-chain circuit.
Linlin Sun +7 more
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Adaptive Beamforming With Software-Defined-Radio Arrays
IEEE Access, 2022 Digital beamforming is the holy grail of antenna array technologies, however implementing digital beamforming into practical antenna arrays has been slow due to hardware complexity and cost.
Daniel Christopher Gaydos +2 more
doaj +1 more source