Results 71 to 80 of about 1,839 (179)
Robust Spectral and Energy Efficiency Tradeoff for RIS‐Aided Multi‐User Communication
IET Communications, Volume 20, Issue 1, January/December 2026.In this work, an RIS‐aided multi‐user network with imperfect CSI is investigated. Correspondingly, we focus on balancing SE and EE through the collaborative design of the base station (BS)'s precoding matrix and the RIS's phase shifts, which consider the transmit power budget and the channel uncertainties constraints.
Xiandeng He, Yilin Wang, Shun Zhang
wiley +1 more source
IEEE Access, 2019 In millimeter-wave (mmWave)-based massive multiple-input-multiple-output (MIMO) systems, hybrid precoding is considered one of the indispensable techniques in the next generation wireless communication systems (5G) to reduce the number of radio-frequency
Mengqian Tian +5 more
doaj +1 more source
IET Communications, Volume 20, Issue 1, January/December 2026.This paper investgates a unmanned aerial vehicle‐assisted non‐orthogonal multiple access‐integrated sensing and communication system, which fuses the UAV's echo signal and target position by employing the extended Kalman filter algorithum to achieve high‐precision prediction of the target trajectory.
Dongsheng Han, Zian Wang, Yan Wang
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IET Communications, Volume 20, Issue 1, January/December 2026.Within the framework of integrated space‐air‐ground edge computing networks, this paper investigates the joint optimization of task allocation, user‐UAV association, UAV deployment, and computation resource allocation between UAVs and the LEO satellite.
Tengda Huang, Tao Hu, Di Wu, Wenzhi Zhao
wiley +1 more source
Hybrid Precoding Design for Wireless Fading Channels
Applied SciencesPrecoding techniques are widely used to eliminate interference between multiple user signals in a wireless fading channel environment. The linear MMSE precoding technique, one of the most widely used techniques so far, has low computational complexity ...
Bangwon Seo
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On equalization of channels with ZP precoders [PDF]
2007 IEEE International Symposium on Circuits and Systems (ISCAS), 2007 In communication systems which used filter bank precoders with zero padding (ZP) at the transmitter, the effect of an FIR channel can be equalized without the use of IIR equalizers. In this paper a number of observations are made with regard to the noise gain created by the equalizer at the receiver. If the number of received samples per block actually
openaire +2 more sources
Dianxin kexue, 2021 In order to improve the performance of hybrid precoding scheme based on fully connected structure in millimeter-wave massive MIMO system, a hybrid precoding scheme based on an equivalent channel with two-step design method was proposed.Firstly, the ...
Haiyan CAO +5 more
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Nonlinear robust precoding for coordinated multipoint transmission
Tongxin xuebao, 2015 A nonlinear robust precoding algorithm was proposed,which redesigned the feedback matrix，the forward matrix and the scaling matrix of the traditional tomlinson-harashima precoding algorithm based on the statistical characteristics of the downlink channel
Zhe-qi GU, Zhong-pei ZHANG
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Multi-Layer Downlink Precoding for Cloud-RAN Systems Using Full-Dimensional Massive MIMO
IEEE Access, 2018 Full-dimensional (FD) massive multiple-input multiple-output (MIMO) has recently emerged as one of the physical layer enablers of 5G systems. Grounded on prior work on layered precoding, a novel framework for low-complexity multi-layer downlink precoding
Guillem Femenias, Felip Riera-Palou
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A TDD-MIMO Transmission Scheme with Hybrid Precoding
工程科学与技术, 2015 :In TDD-MIMO systems, the antenna correlation has a great impact on the system performance. In order to overcome this problem, a hybrid precoding scheme was proposed.
刘帅, 孙德春, 易克初, 杨宏
doaj