Results 41 to 50 of about 5,733 (189)
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
Detection of stationary humans using time-division UWB MIMO through-wall radar
The Journal of Engineering, 2019 Existing radars for stationary human detection need to process echo data from all channels simultaneously, which requires the radar system with high performance.
Sun Xinxin, Jin Liangnian, Liu Qinghua
doaj +1 more source
International Journal of Satellite Communications and Networking, EarlyView.ABSTRACT The integration of low Earth orbit (LEO) satellite constellations with commercial aircraft communication systems presents critical challenges in maintaining continuous connectivity during dynamic flight conditions. Current geostationary satellite systems suffer from high round‐trip latency (>$$ > $$ 500 ms) and inadequate coverage at high ...
Raúl Parada +4 more
wiley +1 more source
Improved high-precision approach based on deconvolution in MIMO sonar imagery
The Journal of Engineering, 2019 Multiple-input multiple-output (MIMO) sonar enables high-resolution imaging, which is extremely useful in underwater acoustic high-precision imagery.
Lu Yan, Shengchun Piao, Feng Xu
doaj +1 more source
International Journal of Satellite Communications and Networking, EarlyView.ABSTRACT Low Earth Orbit (LEO) satellite constellations offer unprecedented opportunities for global broadband connectivity but pose significant beamforming challenges due to rapid platform motion and stringent onboard hardware constraints. Fully digital architectures, while optimal in theory, remain impractical for satellite payloads, motivating ...
Mohammad Momani +2 more
wiley +1 more source
Transceiver Design for an FDA-MIMO Radar and MIMO Communication Spectral Coexistence System
Leida xuebaoWhen radar and communication systems share the same frequency spectrum on the same platform, mutual interference may occur. In addition, mainlobe deceptive interferences pose a serious threat to radar target detection.
Qihang XU +4 more
doaj +1 more source
One microwave imaging system based on automotive radar chip
The Journal of Engineering, 2019 The interest in microwave imaging system is increasing because it can serve as a useful tool for concealed threat detecting. The current imaging systems have two major challenges: (i) multi-static arrays suffer from complex hardware design and ...
Fuwei Wu +4 more
doaj +1 more source
International Journal of Satellite Communications and Networking, EarlyView.ABSTRACT In this paper, the correlation learning estimation and adaptive reduction (CLEAR) of interference, an adaptive, blind and transparent interference compensation method applied in a wideband dual‐channel receiver, is studied for a pair of independent satellite multi‐connectivity links, using the same carrier frequency and signal bandwidth in use
Svilen Dimitrov
wiley +1 more source
EMD-based adaptive stationary human imaging for TD-MIMO through-wall radar
The Journal of Engineering, 2019 This study develop an adaptive stationary target imaging technique based on the empirical mode decomposition (EMD) method for the time-division multiple-input multiple-output through-wall radar.
Cao Lingxiao +5 more
doaj +1 more source
Broadband MIMO-OFDM wireless communications [PDF]
Proceedings of the IEEE, 2004 Orthogonal frequency division multiplexing (OFDM) is a popular method for high data rate wireless transmission. OFDM may be combined with antenna arrays at the transmitter and receiver to increase the diversity gain and/or to enhance the system capacity on time-varying and frequency-selective channels, resulting in a multiple-input multiple-output ...
Gordon L. Stüber +5 more
openaire +1 more source