Results 61 to 70 of about 34,935 (182)

Terahertz Communication and Sensing Framework Based on Orthogonal Delay-Doppler Division Multiplexing Modulation

Leida xuebao
Because the Terahertz (THz) band is capable of achieving terabit-per-second communication rates and high-precision sensing, THz Integrated Sensing And Communication (ISAC) has become a key technology for future wireless systems.
Meilin LI, Chong HAN
doaj   +1 more source

Orthogonal double V‐linear frequency modulation waveform for simultaneous polarimetric measurement and its non‐linear processing

IET Radar, Sonar & Navigation
It has become an interesting topic for modern radar possessing capabilities of polarimetric measurement, high‐resolution imaging, and good delay‐Doppler resolution.
Biao Shen, Runzhe Zhang, Ziyuan Yang, Tao Liu   +3 more
doaj   +1 more source

The Incidence and Cross Methods for Efficient Radar Detection

, 2013
The designation of the radar system is to detect the position and velocity of targets around us. The radar transmits a waveform, which is reflected back from the targets, and echo waveform is received.
Fish, Alexander, Gurevich, Shamgar
core   +1 more source

Single-Carrier Delay-Doppler Domain Equalization

CoRR
12 pages, 10 figures, submitted to IEEE ...
Yuto Hama, Hideki Ochiai
openaire   +2 more sources

Extended GFDM Framework: OTFS and GFDM Comparison

, 2018
Orthogonal time frequency space modulation (OTFS) has been recently proposed to achieve time and frequency diversity, especially in linear time-variant (LTV) channels with large Doppler frequencies.
Chafii, Marwa, Fettweis, Gerhard, Matthe, Maximilian, Nimr, Ahmad   +3 more
core   +1 more source

Translational Motion Compensation for Ballistic Targets Based on Delayed Conjugated Multiplication

Leida xuebao, 2014
The micro-motion is combined with the high velocity of translation motion for ballistic targets. The translation motion should be compensated for micro-Doppler information extraction.
He Si-san, Zhao Hui-ning, Zhang Yong-shun   +2 more
doaj   +1 more source

Research on differential Pattern time delay shift coding underwater acoustic communication

Tongxin xuebao, 2012
A differential Pattern time delay shift coding(DPDS)method with a non-fixed code width based on the traditional Pattern time delay shift coding was proposed.The information is carried by the time delay between adjacent code element,the different linear ...
Jing-wei YIN, Xiao ZHANG, Xue-li SHENG, Chao SUN   +3 more
doaj   +2 more sources

Construction of Waveform Library in Cognitive Radar

Polish Maritime Research, 2017
Based on the thoughts of cognitive radar, Fractional Fourier Transform (FrFT) is used to generate a rotatable waveform libraries of Frank coded/Barker coded waveform in this paper.
Yongqiang Guo, Yumin Wu, Hui Liu
doaj   +1 more source

Spatial-Variant Delay-Doppler Imagery of Airborne Wide-Beam Radar Altimeter for Contour Extraction of Undulating Terrain

Remote Sensing
Synthetic aperture radar altimeter (SARAL) directs the radar beam toward the nadir point of the flight trajectory. It is capable of capturing elevation variations in the terrain of interest. To ensure that the nadir point remains within the beam coverage
Yanxi Lu, Shize Yu, Yao Wang, Fang Li, Longlong Tan, Bo Huang, Ge Jiang, Gaozheng Liu, Lei Yang   +8 more
doaj   +1 more source

Improving OFDM Using Delay-Doppler Channel Estimation

IEEE Open Journal of the Communications Society
In high-mobility environments, rapid channel variations and intercarrier interference (ICI) hinder the performance of orthogonal frequency division multiplexing (OFDM).
Hamish Peter Hayes Shaw, Mohammad Rowshan, Jinhong Yuan   +2 more
doaj   +1 more source