Mode Switching-based STAR-RIS with Discrete Phase Shifters
A mixed-integer nonlinear optimization framework is formulated for joint optimization of the active beamforming matrix, user power allocation, and STAR-RIS phase shift vectors, including
Spectrum and Energy Efficiency of Massive MIMO for Hybrid
Abstract: Massive multiple-input–multiple-output (MIMO) systems provide efficient connectivity services for a large number of industrial Internet of Things (IoT) devices.
Phase Shifters vs Switches
Moreover, the combination of phase shifters and switches offers significantly higher EE against conventional PS-only architectures, while nearly preserving spectral efficiency.
Energy efficient phase interpolator based hybrid beamforming
Solving this problem, we have proposed a tabu search (TS) based algorithm, which uses a genetic algorithm crossover feature to search for the new neighbor. Simulation results show that
Energy-Efficient Hybrid Beamforming with Variable and Constant
In this paper, the authors propose a novel partially connected hybrid beamforming (PC-HBF) architecture, which employs variable phase shifters (VPSs) and constant phase shifters (CPSs) for
Hybrid Beamforming with Reduced Number of Phase Shifters for
In order to set the phase of the lth phase shifter on the mth RF chain, and the select network of the switches in Fig. 1d according to FSS, the following procedure can be applied:
Hybrid beamforming and phase shift optimization for energy efficiency
In this paper, we propose a novel Beamforming and Phase-shift Optimization Framework (BPOF) that jointly optimizes hybrid beamforming, RIS phase shift design, and the on-off control of
Phase-shift engineered triboelectric nanogenerators for constant
This Review summarizes the principles of phase shift engineered TENGs, and how it might further boost energy utilization efficiency and practicality.
RF-MEMS Monolithic K and Ka Band Multi-State Phase Shifters
In particular, satellite communication systems providing high-speed Internet connectivity utilize the K and Ka bands, which o er larger bandwidth compared to lower frequencies. This paper focuses on two
access-2796571-pp.pdf
Abstract—This paper investigates the downlink achievable spectral efficiency (SE) and energy efficiency (EE) of massive MIMO for hybrid architectures based on phase shifters, where the base...
Chapter 24 Array Phase Shifters: Theory and Technology
The most prevalent use for microwave phase shifters continues to be scanning directly- radiating or “reflectarray” phased-array antennas. That market continues to be dominated by military radar and
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