Showing 161 - 180 results of 521 for search '"transmitter"', query time: 0.05s Refine Results
  1. 161

    Study on the Detectability of the Sky-Surface Wave Hybrid Radar by Hou Chengyu, Ke Guo, Shi Tiange, Wang Yuxin

    Published 2014-01-01
    “…Working in the HF (high-frequency) band and the transmitter and receiver locating separately, the sky-surface wave hybrid radar both has the capabilities of the OTHR (over-the-horizon radar) and the advantage of the bistatic radar. …”
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  2. 162

    Exploring volatility transmission in Capesize freight contracts: Insights from energy and commodity markets. by Jackson Jinhong Mi, Shek Ahmed, Yanhui Chen

    Published 2025-01-01
    “…The analysis reveals that short-term spillovers dominate the system, with crude oil serving as a consistent shock transmitter within the time charter network. The China-Brazil route drives spillovers across all periods, while the Australia-China route transitions from absorbing short-term volatility to transmitting long-term shocks. …”
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  3. 163

    Double-component combined generalized weighted fractional Fourier transform based waveform design for massive MIMO by Xingjian LI, Zhiqun SONG, Yong LI, Lizhe LIU, Bin WANG, Chang WANG

    Published 2023-12-01
    “…In order to overcome the drawback of conventional diversity technologies that sacrificing valuable communication resources such as data rate or bandwidth in massive multiple input multiple output (MIMO) systems, a double-component combined generalized weighted fractional Fourier transform (DCGWFRFT) based waveform design method was proposed.The concept of computational diversity was introduced, and the diversity performance was improved via moderate computational resources without requiring channel state information at the transmitter.The principle of computational diversity of DCGWFRFT based waveform was firstly analyzed, and a DCGWFRFT based waveform design and transform process, which could be adopted combined with existing diversity methods, was then proposed according to the principle.Theoretical analysis proves that the proposed waveform design and transform process can perfectly recover the original transmitted signal in noise-free case, and the power of error of proposed waveform is distributed more evenly than that of untransformed waveform in noisy case.Simulation results show that the performance of DCGWFRFT based waveform has an advantage of at least 1.7 dB in bit signal-to-noise ratio compared with untransformed waveform when bit error rate is 10<sup>-3</sup>.…”
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  4. 164

    Extraction of Weak Scatterer Features Based on Multipath Exploitation in Radar Imagery by Muhannad Almutiry, Lorenzo Lo Monte, Michael C. Wicks

    Published 2017-01-01
    “…The proposed solution is to suppress the dominant scatterer by modeling its electromagnetic effects as a secondary source or “extra dependent transmitter” in the measurement domain. The suppression of the domain scatterer reveals the presence of the weak scatterer based on exploitation of multipath effects. …”
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  5. 165

    Quantum illumination networks by Xiaobin Zhao, Zheshen Zhang, Quntao Zhuang

    Published 2025-02-01
    “…Here, we address these challenges by introducing a quantum illumination network that leverages a transmitter array and a single receiver antenna. Thanks to multiple transmitters, quantum advantage is achieved with a high total transmitted power. …”
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  6. 166

    Energy Transfer Using Gradient Index Metamaterial by Boopalan Ganapathy, Subramaniam Chittur Krishnaswamy

    Published 2018-01-01
    “…The structure nearly doubles the wireless power transfer quantum between the transmitter and the receiver when placed at both ends. …”
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  7. 167

    Improved transmit beamforming design based on ADMM for low probability of intercept of FDA-MIMO radar by Pengcheng GONG, Yuntao WU

    Published 2022-04-01
    “…Considering the low probability of intercept problem that the signal-dependent interference and the target were located in the same angle, an improved transmit beamforming design based on the alternating direction method of multipliers (ADMM) was proposed for multiple-input multiple-output with frequency diverse array radar.The transmit energy was minimized at the target under constraints of the energy at each transmitter and signal clutter-plus-noise ratio requirement.Subsequently, a cyclic algorithm was developed to tackle the non-convex design problem.Firstly, the optimal receive filter was obtained by generalized Rayleigh quotient.And then the transmit beamforming was optimized by employing auxiliary variables and ADMM to solve quadratic programming problem with fractional inequality constraint.Moreover, both the convergence and computational complexity of the proposed algorithm were discussed.Simulation results show that, compared with the semi-denite programming method, the proposed method not only attains the given antenna power, but also achieves the better mainlobe focusing performance at the target.Furthermore, the null levels at the clutter locations and the jamming directions obtained by the proposed method are -50 dB above.…”
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  8. 168

    Optimal Packet Length for Free-Space Optical Communications with Average SNR Feedback Channel by Ghassan Alnwaimi, Hatem Boujemaa, Kamran Arshad

    Published 2019-01-01
    “…The average signal-to-noise ratio (ASNR) is measured at the receiver and sent back to the transmitter to optimize packet length. In addition, the length of packet is optimized to enhance the average throughput. …”
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  9. 169

    Time-Frequency Connectedness between Green Bonds and Conventional Financial Markets: Evidence from China by Yingliang Chen, Guifen Shi, Guanchong Hou

    Published 2024-01-01
    “…Secondly, the green bond market primarily acts as a net risk spillover transmitter in most periods. Thirdly, compared to the stock, foreign exchange, and commodity markets, the green bond market has a more significant spillover effect on the traditional fixed-income market. …”
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  10. 170

    Efficient Bistatic SAR Raw Signal Simulator of Extended Scenes by Liang Yang, Weidong Yu, Shichao Zheng, Lei Zhang

    Published 2014-01-01
    “…Bistatic SAR system is a new mode that allocates the radar transmitter and receiver on different platforms and has more advantages compared to the monostatic case. …”
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  11. 171

    Time-varying interlinkages between digitalization, globalization, and carbon emission in Vietnam by Pham Hong Chuong, To Trung Thanh, Le Thanh Ha

    Published 2025-02-01
    “…The role of mobile cellular subscription, FDI, and CO2 is interchangeable between shock transmitter and shock receiver, depending on considered periods. …”
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  12. 172

    Resource scheduling strategy based on simulated annealing algorithm in hybrid D2D cellular networks by Xiang YU, Haibo ZHANG, Lu YANG

    Published 2017-04-01
    “…D2D communication is a short distance communication mode in the future 5G network.In the process of communication,the information is transmitted from the sender to the receiver directly,without the need to transmit through the base station.The introduction of D2D communication in the traditional cellular network can greatly improve the total throughput of the system,increase the utilization of spectrum resources and reduce the power consumption of the transmitter.A resource allocation method which was used in hybrid D2D cellular network was mainly introduced,spectrum resources was distributed by Lagrange multiplier method combined with simulated annealing algorithm,a consideration of channel capacity and energy consumption of the resource scheduling strategy based on simulated annealing algorithm was put forward.This algorithm was simulated by the simulation platform in Vienna,compared to the traditional greedy optimization algorithm,it can significantly increase the total system throughput and bandwidth utilization and reduce the power consumption.In addition,the distributed algorithm was adopted,that D2D users searched for a suitable target channel and calculated their transmit power according to the algorithm steps,which reduced the signaling overhead of the base station.…”
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  13. 173

    Dual functional radar communication based on serial time division CC-CDMA by Yubo LI, Jian CUI, Junchao FENG, Xiaoyu CHEN

    Published 2023-09-01
    “…In order to improve the performance of target detection and solve the problem of self-interference and mutual interference between multiple targets and multiple users, a radar communication integration system based on serial time division CC-CDMA was proposed.Firstly, the code division multiplexing mechanism was used to adjust the spread spectrum sequence of different subcodes in the complementary code to the signals on different time slices at the transmitter through the generalized PTM sequence to generate the integrated signal of radar communication.Secondly, the receiving end of the radar processed the data twice, and the point-by-point minimization method was used to fuse the processing results to improve the target detection capability of the radar subsystem.Lastly, at the receiving end of communication, the subcodes corresponding to the spread spectrum sequence at the transmitting end were used to de-amplify the received signals, and the bit error ratio was further reduced by interleaved coding and Hamming coding.Simulation results show that compared with other radar communication integration systems, the proposed system has lower bit error rate, higher Doppler resolution and better side lobe suppression performance.…”
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  14. 174

    Investigating the Effect of Winding Structures in Dynamic Wireless Power Transmission in Electric Vehicle Applications by M. Rafinejad, A. Ghayebloo

    Published 2025-07-01
    “…The purpose of this paper is to compare six different types of winding structures for choosing the best type of winding for the transmitter side in the application of dynamic charging of electric vehicles. …”
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  15. 175

    Design and Implementation of Radar Cross-Section Models on a Virtex-6 FPGA by B. U. V. Prashanth

    Published 2014-01-01
    “…This method can be generalized to apply to objects of arbitrary geometry for the two configurations of transmitter and receiver in the same as well as different locations.…”
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  16. 176

    SVD-Aided Power Allocation and Iterative Detection Scheme for Turbo-BLAST System with Imperfect Channel State Information by Xiaomin Chen, Xiangbin Yu, Dazhuan Xu

    Published 2011-01-01
    “…A new technique that combines adaptive power allocation and iterative detection based on singular value decomposition (SVD) is introduced for the modified Turbo-BLAST system with imperfect channel state information (I-CSI). At the transmitter, in order to maximize the capacity performance, the MIMO channel is decomposed into several parallel eigen subchannels by SVD, and then proper power based on the water-filling principle is allocated to every subchannel subject to the total transmit power constraint. …”
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  17. 177

    A Method to Improve the Performance of Arrays for Aperture-Level Simultaneous Transmit and Receive by Dujuan Hu, Xizhang Wei, Mingcong Xie, Yanqun Tang

    Published 2022-01-01
    “…The simultaneous transmit and receive (STAR) system needs to establish sufficiently high isolation between the transmitter and the receiver in order to play its role. …”
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  18. 178

    Maintaining Wireless Connectivity Constraints for Robot Swarms in the Presence of Obstacles by Joel M. Esposito

    Published 2011-01-01
    “…In all of these cases robust operation is best attained when the transmitter/receiver robot pair is (1) separated by less than some maximum distance (range constraint); and (2) not obstructed by large dense objects (line-of-sight constraint). …”
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  19. 179

    Natal Dispersal of Eastern Imperial Eagles: Preliminary Results For the Central European Population by Matthias Schmidt, Arvay Marton, Jozef Chavko, Tomáš Veselovský, David Horal, Rainer Raab, Milan Ruzic, Beate Wendelin, Marton Horvath

    Published 2023-10-01
    “…In frame of these activities imperial eagle were tagged by satellite transmitter since 2003 in several projects by different organisations of the region. …”
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  20. 180

    Analysis of Transmission Characteristics on an MSK-Based Rotating Magnet-Based Mechanical Antenna by Xie He, Qiang Zhou, Jianya Zhang

    Published 2022-01-01
    “…A rotating magnet-based mechanical antenna (RMBMA) is a new promising paradigm which can significantly reduce both the size and the power consumption of the super-low frequency electromagnetic transmitter. To further reveal the effects of the rotational motion on transmission, this paper investigates the performance analysis of MSK (Minimum Shift Keying)-based RMBMA for the first time. …”
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