Wireless communications and applications above 100 GHz: Opportunities and challenges for 6G and beyond

TS Rappaport, Y Xing, O Kanhere, S Ju… - IEEE …, 2019 - ieeexplore.ieee.org
Frequencies from 100 GHz to 3 THz are promising bands for the next generation of wireless
communication systems because of the wide swaths of unused and unexplored spectrum …

A survey of millimeter-wave communication: Physical-layer technology specifications and enabling transmission technologies

S He, Y Zhang, J Wang, J Zhang, J Ren… - Proceedings of the …, 2021 - ieeexplore.ieee.org
Millimeter-wave (mmWave) frequency bands, which offer abundant underutilized spectral
resources, have been explored and exploited in the past several years to meet the …

Hybrid multibeamforming receiver with high-precision beam steering for low Earth orbit satellite communication

YE Chi, J Park, SO Park - IEEE Transactions on Antennas and …, 2023 - ieeexplore.ieee.org
A hybrid multibeamforming receiver for low Earth orbit (LEO) satellite communication in the
Ku-band is designed and tested. The proposed receiver is implemented with eight channels …

A low-SWaP 16-beam 2.4 GHz digital phased array receiver using DFT approximation

VA Coutinho, V Ariyarathna… - … on Aerospace and …, 2020 - ieeexplore.ieee.org
A low-complexity approximation for the 16-point DFT and its respective multiplierless fast
algorithm is proposed. A receive mode multibeam phased-array experiment was realized at …

Fast radix-32 approximate DFTs for 1024-beam digital RF beamforming

A Madanayake, RJ Cintra, N Akram… - IEEE …, 2020 - ieeexplore.ieee.org
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) …

A novel area-power efficient design for approximated small-point FFT architecture

X Han, J Chen, B Qin… - IEEE Transactions on …, 2020 - ieeexplore.ieee.org
Fast Fourier transform (FFT) is an essential algorithm in digital signal processing and
advanced mobile communications. With the continuous development of modern technology …

Towards a low-SWaP 1024-beam digital array: A 32-beam subsystem at 5.8 GHz

A Madanayake, V Ariyarathna… - … on Antennas and …, 2019 - ieeexplore.ieee.org
Millimeter-wave communications require multibeam beamforming to utilize wireless
channels that suffer from obstructions, path loss, and multipath effects. Digital multibeam …

Frequency-multiplexed array digitization for MIMO receivers: 4-Antennas/ADC at 28 GHz on xilinx ZCU-1285 RF SoC

N Akram, A Madanayake, S Pulipati… - IEEE …, 2021 - ieeexplore.ieee.org
Communications at mm-wave frequencies and above rely heavily on beamforming antenna
arrays. Typically, hundreds, if not thousands, of independent antenna channels are used to …

Circular Array N-Beam Digital Beamformer having Low Arithmetic Complexity: 16 Simultaneous 100 MHz Beams at 2.4 GHz

V Ariyarathna, A Madanayake - IEEE Transactions on Radar …, 2023 - ieeexplore.ieee.org
This paper proposes a-element uniform circular array (UCA)-beam multibeam beamformer
having arithmetic complexity. The architecture achieves a reduction of the arithmetic …

Design of Optimal Multiplierless FRM-Based Wideband Channelizer With STB

W Zhang, K Luo, Z Zhao, X Zhao… - IEEE Transactions on …, 2024 - ieeexplore.ieee.org
In this brief we optimally solve the problem of multiplierless design of wideband
channelizers with sharp transition bandwidth (STB). We adopt frequency response masking …