Rate-splitting multiple access(RSMA)can cope with a wide range of propagation conditions in multigroup multicast communications through rate splitting *** breakthrough the grouprate limited bottleneck,reconfigurable i...
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Rate-splitting multiple access(RSMA)can cope with a wide range of propagation conditions in multigroup multicast communications through rate splitting *** breakthrough the grouprate limited bottleneck,reconfigurable intelligent surface(RIS)technique can be introduced to assist wireless communications through enhancing the channel *** RIS-aided RSMA multigroup multicasting,how to provide fair and high-quality multiuser service under power and spectrum constraints is *** this paper,we propose a max-min fair RIS-aided rate-splitting multiple access(MMF-RISRSMA)scheme for multigroup multicast communications,where the rate fairness is obtained by maximizing the minimum *** doing so,we jointly optimize the beamformers,the rate splitting vector at the transmitter,as well as the phase shifts at *** solve it,we divide the original optimization problem into two subproblems and alternately optimize the *** beamforming and rate splitting optimization subproblem is solved by using the successive convex approximation *** phase shift optimization subproblem is solved through the penalty function method to achieve a rank-one locally optimal *** demonstrate that the proposed MMF-RIS-RSMA scheme can obtain significant performance gain in terms of the minimum group-rate.
We propose a demand-sensitive hierarchical task offloading (DS-HTO) method to optimize the latency, spectrum occupation ratio, and resource utilization ratio in collaborative cloud-edge elastic optical networks (CCE-E...
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The traditional Beetle Antennae Search (BAS) algorithm exhibits strong randomness in intelligent agent path planning, resulting in issues such as low search efficiency and poor path practicability. To address these is...
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A reconfigurable feed network for multi-polar antennas is proposed in this article. It uses PIN diodes to make reconfigurable structure and change the output. The network can produce four kinds of output signal with o...
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An efficient and real-time simulation method is proposed for the dynamic electromagnetic characteristics of cluster targets to meet the requirements of engineering practical ***,the coordinate transformation method is...
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An efficient and real-time simulation method is proposed for the dynamic electromagnetic characteristics of cluster targets to meet the requirements of engineering practical ***,the coordinate transformation method is used to establish a geometric model of the observation scene,which is described by the azimuth angles and elevation angles of the radar in the target reference frame and the attitude angles of the target in the radar reference ***,an approach for dynamic electromagnetic scattering simulation is ***,a fast-computing method based on sparsity in the time domain,space domain,and frequency domain is *** method analyzes the sparsity-based dynamic scattering characteristic of the typical cluster *** error between the sparsity-based method and the benchmark is small,proving the effectiveness of the proposed method.
Along with the development of intelligent transportation system (ITS), artificial intelligence (AI)-based machine learning technologies have been widely utilized in Internet of Vehicles (IoV). Neural network (NN)-base...
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An ultra-wideband transmitarray antenna operating at 17-30 GHz is proposed based on the polarization conversion approach. The designed element has a simple three-layer conductive structure, consisting of a C-shaped sp...
Existing stochastic configuration network (SCN)-based modeling methods are underperformed in handling multitarget regression problems. An important reason is that they ignore the intertarget correlations, which have a...
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A simple chessboard metasurface consisting of only one type of cell is proposed. The unit of metasurface can achieve a phase difference of 180°±37° at 9.3-30.6 GHz. The metasurface can achieve more than...
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Blockchain, as an emerging technology, has been widely studied by the researchers from academia and industry. Alliance chain, as an important form of blockchain, is often applied to smart grids, smart city and the Int...
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