COMMUNICATION_SYSTEMS

作品数：170被引量：195H指数：6
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Channel estimation in integrated radar and communication systems with power amplifier distortion
《Journal of Systems Engineering and Electronics》2024年第5期1098-1108,共11页LIU Yan YI Jianxin WAN Xianrong RAO Yunhua HAO Caiyong 
supported by the National Natural Science Foundation of China(61931015,62071335,62250024);the Natural Science Foundation of Hubei Province of China(2021CFA002);the Fundamental Research Funds for the Central Universities of China(2042022dx0001);the Science and Technology Program of Shenzhen(JCYJ20170818112037398).
To reduce the negative impact of the power amplifier(PA)nonlinear distortion caused by the orthogonal frequency division multiplexing(OFDM)waveform with high peak-to-average power ratio(PAPR)in integrated radar and co...
关键词：channel estimation integrated radar and communication(RadCom) passive sensing nonlinear distortion power amplifier(PA) pilot pattern 
Broadband beam steering for misaligned multi-mode OAM communication systems被引量：1
《Journal of Systems Engineering and Electronics》2021年第4期779-788,共10页TIAN Zhengjuan CHEN Rui LONG Wenxuan ZHOU Hong MORETTI Marco 
supported by the Natural Science Basic Research Program of Shaanxi(2021JZ-18);the Natural Science Foundation of Guangdong Province of China(2021A1515010812);the Open Research Fund of National Mobile Communications Research Laboratory,Southeast University(2021D04);the Fundamental Research Funds for Central Universities,and the Innovation Fund of Xidian University。
Orbital angular momentum(OAM)at radio frequency(RF)has attracted more and more attention as a novel approach of multiplexing a set of orthogonal OAM modes on the same frequency channel to achieve high spectral efficie...
关键词：orbital angular momentum(OAM) uniform circular array(UCA) broadband wireless communication MISALIGNMENT beam steering 
Pseudo-noise preamble based joint frame and frequency synchronization algorithm in OFDM communication systems被引量：4
《Journal of Systems Engineering and Electronics》2014年第1期1-9,共9页Qingfeng Jing Ming Cheng Yuping Lu Weizhi Zhong Hongwei Yao 
supported by the National Natural Science Foundation of China(61301105;61102069);the China Postdoctoral Science Foundation Funded Project(2013M531351);the Nanjing University of Aeronautics and Astronautics Founding(NN2012022);the Open Fund of Graduate Innovated Base(Laboratory)for the Nanjing University of Aeronautics and Astronautics(KFJJ120219)
Frame and frequency synchronization are essential for orthogonal frequency division multiplexing （OFDM） systems. The frame offset owing to incorrect start point position of the fast Fourier transform （FFT） window,...
关键词：orthogonal frequency division multiplexing （OFDM） frame synchronization carrier frequency offset （CFO） estimation preamble pseudo-noise sequence. 
Construction of time-frequency codes based on protograph LDPC codes in OFDM communication systems被引量：2
《Journal of Systems Engineering and Electronics》2012年第3期335-341,共7页Kaiyao Wang Yang Xiao Kiseon Kim 
supported by the Beijing Natural Science Foundation of China (4102050);the National Natural Science of Foundation of China (NSFC)-Korea Science and Engineering Foundation (KOSF) Joint Research Project of China and Korea (60811140343)
This paper proposes a scheme to construct time- frequency codes based on protograph low density parity check （LDPC） codes in orthogonal frequency division multiplexing （OFDM） communication systems. This approach s...
关键词：time-frequency code protograph low density parity check （LDPC） code orthogonal frequency division multiplexing （OFDM） fast encoding algorithm. 
Low complexity method for spreading sequence estimation of DSSS signal in non-cooperative communication systems被引量：10
《Journal of Systems Engineering and Electronics》2009年第1期41-49,共9页Chang Liang Wang Fuping Wang Zanji 
supported by the Specialized Research Fund for the Doctoral Program of Higher Education (20060003032)
It is a necessary step to estimate the spreading sequence of direct sequence spread spectrum （DSSS） signal for blind despreading and demodulation in non-cooperative communications. Two innovative and effective detec...
关键词：direct sequence spread spectrum detection statistic low complexity. 
Key issues of multiple access technique for LEO satellite communication systems
《Journal of Systems Engineering and Electronics》2004年第2期120-125,共6页WenPingping GuXuemai 
This project was supported by National "863" High Technology Research and Development Program of China (863-2-5-2.1).
The large carrier frequency shift caused by the high-speed movement of satellite (Doppler effects) and the propagation delay on the up-down link are very critical issues in an LEO satellite communication system, which...
关键词：LEO satellites multiple-access protocols flow control Doppler estimation. 
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