Results 11 to 20 of about 125,865 (258)
All-Optical Double Spectral-Efficient RoF Link With Compensation of Dispersion-Induced Power Fading
IEEE Photonics Journal, 2021 An all-optical radio-over-fiber (RoF) link with double spectral-efficient transmission and compensation of chromatic dispersion-induced power fading is proposed and experimentally demonstrated.
Dongjuan Shan +3 more
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Phased array calibration system with high accuracy and low complexity
Alexandria Engineering Journal, 2023 This paper presents a highly efficient phased array calibration system for phase and magnitude error correction. The proposed calibration system is based on far-field scanning of the array antenna under test at factory level. Since the proposed structure
Sol Kim +3 more
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Error Vector Magnitude Analysis in Generalized Fading With Co-Channel Interference [PDF]
IEEE Transactions on Communications, 2018 In this paper, we derive the data-aided Error Vector Magnitude (EVM) in an interference limited system when both the desired signal and interferers experience independent and non identically distributed $ $-$ $ shadowed fading. Then it is analytically shown that the EVM is equal to the square root of number of interferers when the desired signal and ...
Sudharsan Parthasarathy +4 more
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IEEE Access, 2022 In this study, we perform an analytical investigation of the electro-optic (EO), Mach-Zehnder modulator (MZM) transmission boundary area with a nonlinear model.
Yus Natali +2 more
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Error vector magnitude relation to magnitude andphase distortionin 8-PSK systems
Electronics Letters, 2001 Distortion in 8-PSK systems is a consequence of magnitude and phase disturbances. This work investigates the effects of such distortions (either isolated or combined) due to Gaussian bandpass noise, through analytical and simulation studies. Analytical expressions are derived and analytical-based results, relating error vector magnitude to symbol error
J.L. Pinto, I. Darwazeh
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MATEC Web of Conferences, 2016 In digital modulation quality parameters traceability, the Error Vector Magnitude, Magnitude Error and Phase Error must be traced, and the measurement uncertainty of the above parameters needs to be assessed.
Zhan Zhiqiang +3 more
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Metrology of Optical Communication Systems Using Error Vector Magnitude
Journal of Applied Mathematics and Physics, 2021 Error vector magnitude (EVM) as a performance metric for M-ary quadrature amplitude modulation (QAM) formats in optical coherent systems is presented. It is shown that the calibrated BER, which would otherwise be under-estimated without the correction factor, can reliably monitor the performance of optical coherent systems near the target BER of 10?3 ...
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BMC Ophthalmology, 2018 Background To evaluate the refractive and visual outcomes of Transepithelial photorefractive keratectomy (TransPRK) in the treatment of low to moderate myopic astigmatism.
Lei Xi, Chen Zhang, Yanling He
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Concurrent Dual-Band Receiver Based on Novel Six-Port Correlator for Wireless Applications
IEEE Access, 2017 A concurrent dual-band six-port receiver based on real-valued time-delay neural network (RVTDNN) is proposed in this paper to retrieve two baseband signals from a dual-band radio frequency signal, concurrently.
Weiwei Zhang +5 more
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2020 IEEE/MTT-S International Microwave Symposium (IMS), 2020 This work investigates the impact of nonlinear dynamic effects due to charge trapping and other long-memory phenomena on the wideband linearity of power amplifiers (PAs) for 5G communications applications. The proposed method uses the well-known best linear approximation framework (BLA) to estimate the error vector magnitude (EVM) of the amplifier for ...
Angelotti A. M. +3 more
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