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Alexey Lyubushin
Statistical properties of Earth surface tremors measured by means of GPS were investigated. This article considers measurements of the Earth?s surface displacements in three orthogonal directions relayed by a network of GPS sensors with about 1200 points...
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Zhe Zhang, Xin Bian and Mingqi Li
Channel estimation is an important component of orthogonal frequency division multiplexing (OFDM) systems. The existence of virtual subcarriers leads to energy spreading in the time-domain when using Inverse Fast Fourier Transform (IFFT), resulting in po...
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Chaoli Tang, Dewei Hao, Yuanyuan Wei, Fangzheng Zhu, Xin Wu and Xiaomin Tian
To comprehensively explore the characteristics of global SST anomalies, a novel time?frequency combination method, based on the COBE data and NCEP/NCAR reanalysis products in the past 100 years, was developed. From the view of the time domain, the global...
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Junfang Li, Mingqian Liu, Ningjie Tang and Bodong Shang
Signal-to-noise ratio (SNR) estimation is essential in the unmanned aerial vehicle (UAV) orthogonal frequency division multiplexing (OFDM) system for getting accurate channel estimation. In this paper, we propose a novel non-data-aided (NDA) SNR estimati...
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Omar Daoud,Qadri Hamarsheh,Saleh Saraireh
Pág. pp. 14 - 19
This work proposes a solution to overcome the effect for one of the main drawbacks of these days? wireless systems, where Multiple-Input Multiple-Output (MIMO)-Orthogonal Frequency Division Multiplexing (OFDM) combinations has been used. High peak-to-ave...
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