Results 51 to 60 of about 100,223 (210)
Optimal Large-MIMO Data Detection with Transmit Impairments
, 2015 Real-world transceiver designs for multiple-input multiple-output (MIMO) wireless communication systems are affected by a number of hardware impairments that already appear at the transmit side, such as amplifier non-linearities, quantization artifacts ...
Ghods, Ramina +3 more
core +1 more source
Scaling up MIMO: Opportunities and Challenges with Very Large Arrays [PDF]
, 2012 This paper surveys recent advances in the area of very large MIMO systems. With very large MIMO, we think of systems that use antenna arrays with an order of magnitude more elements than in systems being built today, say a hundred antennas or more ...
Buon Kiong Lau +19 more
core +2 more sources
Review of millimeter‐wave and terahertz near‐field synthetic aperture radar imaging technology
InfoScience, EarlyView.Abstract This paper comprehensively reviews the development of millimeter‐wave (MMW) and terahertz (THz) near‐field imaging technologies, with an emphasis on the state of synthetic aperture radar (SAR)‐based imaging technologies. Near‐field imaging technologies are categorized into passive and active imaging modes, among which active imaging is favored
Qi Yang +3 more
wiley +1 more source
General space-time clutter model for multi-channel airborne radar
The Journal of Engineering, 2019 Ground clutter of looking-down airborne radar is spread in Doppler because of the platform motion, and thus the interested moving targets may be masked by the ground clutter.
Li Xinzhe +3 more
doaj +1 more source
Frozen Differential Scattering in Reconfigurable Complex Media
Laser &Photonics Reviews, EarlyView.A localized perturbation universally results in a rank‐one update of the scattering matrix of any complex medium. The resulting differential output wavefront is “frozen”: its spatial pattern is fixed (agnostic to the input wavefront). Experiments with a programmable‐metasurface‐parametrized wireless link validate frozen differential scattering and ...
Philipp del Hougne
wiley +1 more source
IEEE Photonics JournalAs a wireless communication which combines illumination and communication, visible light communication (VLC) has attracted great attention. In indoor VLC systems, multiple illumination devices are commonly employed, forming a natural multi-input multi ...
Jia-Ning Guo, Jian Zhang
doaj +1 more source
Simplified LLR algorithm for m-QAM demodulation
The Journal of Engineering, 2019 Here, a simplified algorithm to calculate log-likelihood ratio (LLR) for m-QAM demodulation is proposed. Traditional method calculating LLR for m-QAM demodulation is supposed to do distance computing between any two constellation points so that the high ...
Xianle Cao, Yi Liu, Dongfang Hu
doaj +1 more source
MIMO Radars and Massive MIMO Communication Systems Can Coexist
IEEE Transactions on Vehicular TechnologyIn this paper, we investigate the coexistence of a single cell massive MIMO communication system with a MIMO radar. We consider the case where the massive MIMO BS is aware of the radar's existence and treats it as a non-serviced user, but the radar is unaware of the communication system's existence and treats the signals transmitted by both the BS and ...
Aparna Mishra, Ribhu Chopra
openaire +2 more sources
Cell-Free Massive MIMO for UAV Communications [PDF]
2019 IEEE International Conference on Communications Workshops (ICC Workshops), 2019 Submitted to 2019 ICC Workshop on "Integrating UAVs into 5G and Beyond"
D'Andrea C. +4 more
openaire +2 more sources
International Journal of Robust and Nonlinear Control, EarlyView.ABSTRACT In privacy protection of control systems, a trade‐off between control performance and privacy level is often pointed out. Our goal in this paper is to improve this trade‐off by shaping the frequency of noise added for privacy protection when the control objective is to track a reference signal, which is taken as a piece of information whose ...
Rintaro Watanabe +3 more
wiley +1 more source