Results 51 to 60 of about 23,913 (207)

Overlapped-MIMO Radar Waveform Design for Coexistence With Communication Systems

, 2015
This paper explores an overlapped-multiple-input multiple-output (MIMO) antenna architecture and a spectrum sharing algorithm via null space projection (NSP) for radar-communications coexistence. In the overlapped-MIMO architecture, the transmit array of
Abdelhadi, Ahmed, Clancy, T. Charles, Shahriar, Chowdhury   +2 more
core   +1 more source

Terahertz Channel Modeling, Estimation and Localization in RIS‐Assisted Systems

Advanced Electronic Materials, EarlyView.
Reconfigurable intelligent surfaces have become a recent intensive research focus. Based on practical applications, channel strategies for RIS‐assisted terahertz wireless communication systems are categorized into three different types: channel modeling, channel estimation, and channel localization.
Hongjing Wang, Weipeng Wang, Xuan Cong, Shiyu Wang, Gao Li, Sen Gong, Lin Huang, Hongxin Zeng, Yaxin Zhang, Ziqiang Yang   +9 more
wiley   +1 more source

Super-Resolution Angle Estimation Algorithm using Low Complexity MUSIC-Based RELAX for MIMO FMCW Radar [PDF]

Journal of Electromagnetic Engineering and Science
A novel super-resolution angle estimation algorithm using low complexity-multiple signal classification (LC-MUSIC)-based relaxation (RELAX) for multiple-input multiple-output (MIMO) frequency-modulated continuous-wave (FMCW) radar is proposed in this ...
Bong-Seok Kim, Youngseok Jin, Jonghun Lee, Sangdong Kim, Ram M. Narayanan   +4 more
doaj   +1 more source

Fundamental Challenges, Physical Implementations, and Integration Strategies for Ising Machines in Large‐Scale Optimization Tasks

Advanced Electronic Materials, EarlyView.
Ising machines are emerging as specialized hardware solvers for computationally hard optimization problems. This review examines five major platforms—digital CMOS, analog CMOS, emerging devices, coherent optics, and quantum systems—highlighting physics‐rooted advantages and shared bottlenecks in scalability and connectivity.
Hyunjun Lee, Joon Pyo Kim, Sanghyeon Kim
wiley   +1 more source

MIMO radar signals modulation recognition based on partial instantaneous autocorrelation spectrum

The Journal of Engineering, 2019
Aiming at the problem of large amount of calculation and long recognition time of traditional method of modulation identification of centralised multiple-input multiple-output (MIMO) radar signal, partial zero-delay instantaneous autocorrelation spectrum
Xian Rao, Xuezhi Zhao, Ling Zhang
doaj   +1 more source

Direction of arrival estimation of airborne multiple‐input multiple‐output radar in multipath environment

IET Radar, Sonar & Navigation, 2021
Airborne multiple‐input multiple‐output (MIMO) radar can transmit orthogonal waveforms to increase the range of the detection target. However, in a multipath environment, airborne MIMO radar also has energy radiated to the target through multipath ...
Yili Hu, Yongbo Zhao, Sheng Chen, Xiaojiao Pang   +3 more
doaj   +1 more source

Cognitive Sub-Nyquist Hardware Prototype of a Collocated MIMO Radar

, 2016
We present the design and hardware implementation of a radar prototype that demonstrates the principle of a sub-Nyquist collocated multiple-input multiple-output (MIMO) radar.
Cohen, David, Dror, Shahar, Eldar, Yonina C., Ifraimov, Robert, Madmoni, Ron, Meltsin, Maxim, Mishra, Kumar Vijay, Namer, Moshe, Shoshan, Eli   +8 more
core   +1 more source

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, Hongqiang Wang, Xu Chen, Xin Peng   +3 more
wiley   +1 more source

Research on the Compound Jamming Method against FDA-MIMO Beamforming

Applied Sciences, 2022
Frequency diverse array multiple-input multiple-output (FDA-MIMO) radar solves the problem of angle pointing and range pointing during beam transmission due to its unique range-angle dimension dependent, which gives it good characteristics against main ...
Yang Chen, Bo Tian, Chunyang Wang, Jian Gong, Yingjian Zhao   +4 more
doaj   +1 more source

Minimum redundancy MIMO radars [PDF]

2008 IEEE International Symposium on Circuits and Systems (ISCAS), 2008
The multiple-input multiple-output (MIMO) radar concept has drawn considerable attention recently. In the traditional single-input multiple-output (SIMO) radar system, the transmitter emits scaled versions of a single waveform. However, in the MIMO radar system, the transmitter transmits independent waveforms.
Chen, Chun-Yang, Vaidyanathan, P. P.
openaire   +2 more sources