نتایج جستجو برای: error vector magnitude

تعداد نتایج: 567707  

Journal: :Bulletin of Electrical Engineering and Informatics 2021

This paper presents the use of inverse confidential technique on bilateral function with territorial intensity-based optical flow to prove effectiveness in noise resistance environment. In general, image’s motion vector is coded by called where sequences image are used determine vector. But, accuracy rate reduced when source interfered noises. work proved that can increase percentage determinat...

2008

This paper presents a Kalman filter using a seven-component attitude state vector comprising the angular momentum components in a n inertial reference frame, the angular momentum components in the body frame, and a rotation angle. The relatively slow variation of these parameters makes this parameterization advantageous for spinning spacecraft attitude estimation. The filter accounts for the co...

Journal: :journal of agricultural science and technology 2015
a. shahabadi m. nemati h. samari

among the food products, grains play an important role in the consumption patterns of people, especially in the developing countries. since iran's main source of public dietary energy comes directly from grains, investigating and identifying the determinants of import of these products can be an important step towards food security. most experimental studies consider import of grains as only a ...

Journal: :iranian economic review 0
shailender singh associate professor, department of international finance, i-shou university, taiwan amar singh assistant professor, department of commerce, graphicera hill university, uttarakhand, india

this study aims to evaluate the link between economic growth and consumer price index (cpi) in japan for the period of 1980-2014. initial series were adjusted for stationarity using the augmented dickey- fuller (adf) test for unit root followed by the application of johansen co-integration test in order to examine the long-run relationship among the variables, while the causalities were evaluat...

Abstract In this study, wavelet support vector machine (WSWM) model is proposed for daily suspended sediment (SS) prediction. The WSVM model is achieved by combination of two methods; discrete wavelet analysis and support vector machine (SVM). The developed model was compared with single SVM. Daily discharge (Q) and SS data from Yadkin River at Yadkin College, NC station in the USA were used. I...

Journal: :Radiation Oncology (London, England) 2008
Judit Boda-Heggemann Frederick Marc Köhler Hansjörg Wertz Michael Ehmann Brigitte Hermann Nadja Riesenacker Beate Küpper Frank Lohr Frederik Wenz

BACKGROUND Image-guidance systems allow accurate interfractional repositioning of IMRT treatments, however, these may require up to 15 minutes. Therefore intrafraction motion might have an impact on treatment precision. 3D geometric data regarding intrafraction prostate motion are rare; we therefore assessed its magnitude with pre- and post-treatment fiducial-based imaging with cone-beam-CT (CB...

This paper presents an empirical mode decomposition (EMD) based adaptive filter (AF) for channel estimation in OFDM system.  In this method, length of channel impulse response (CIR) is first approximated using Akaike information criterion (AIC). Then, CIR is estimated using adaptive filter with EMD decomposed IMF of the received OFDM symbol. The correlation and kurtosis measures are used to sel...

Journal: :Optics letters 2016
Yinwen Cao Morteza Ziyadi Youichi Akasaka Amirhossein Mohajerin-Ariaei Jeng-Yuan Yang Ahmed Almaiman Peicheng Liao Fatemeh Alishahi Nisar Ahmed Asher J Willner Shigehiro Takasaka Ryuichi Sugizaki Joseph Touch Motoyoshi Sekiya Moshe Tur Alan E Willner

All optical signal level swapping and multilevel amplitude noise mitigation are experimentally demonstrated using the three gain regions of optical parametric amplification, i.e., linear, saturation, and inversion. The two-amplitude-shift-keying and eight-quadrature-amplitude-modulation optical communication systems with baud rates of both 10 and 20 Gbaud have been employed to demonstrate the p...

2003
Yasunori Miyahara John Moore Taichi Ikedo Lars Andersen

1. Abstract Current wireless RF Large Scale Integrated (RF LSI) circuit designs continue to become larger, more complex, and encompass more functionality. It is difficult to analyze a full RF LSI circuit’s functionality using a transistor-level representation with the modulation signal. Instead, current mobile systems are only specified by system-level specifications such as bit error rate or e...

Journal: :JCM 2015
Min Wang Bin Xiao

—High peak-to-average ratio power (PAPR) is a critical practical problem for an OFDM system. Many techniques, such as clipping and filtering (ICF), cognitive clipping, have been proposed to deal with the issue. However, it needs to determine the relationship between error vector magnitude (EVM) and clipping ratio (CR). In this paper, we formulate a universal PAPR optimization model with EVM co...

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