Results 11 to 20 of about 1,050,910 (295)
Error vector magnitude measurement and analysis in optical communication system
Dianxin kexue, 2016 Vector modulation format of high speed optical communication system calls for new measurement and analysis scheme.Error vector magnitude (EVM) is one of the most important parameters in vector modulation evaluation.The definition of EVM parameters,its ...
Junsen LAI +5 more
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Gain, Phase Imbalance, and Phase Noise Effects on Error Vector Magnitude
IEEE Transactions on Vehicular Technology, 2004 The error vector magnitude (EVM) is extensively applied as a measure of communication systems' performance. In this paper, the effects of gain, phase imbalance, and phase noise on EVM are examined. The work is focused on single-carrier, linear, and memoryless modulated signals, such as phase-shift keying and quadrature amplitude modulation (QAM).
Apostolos Georgiadis
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Evaluation of error vector magnitude due to combined IQ imbalances and phase noise [PDF]
IET Circuits, Devices & Systems, 2014 Novel closed form expressions for the error vector magnitude (EVM) are presented. The expressions combine the inâphase quadrature (IQ) amplitude and phase imbalances and the DC offsets along with the phase noise. Both the Gaussian and the Tikhonov probability density functions are utilised for the oscillator phase noise distribution.
Georgiadis, Apostolos +1 more
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On the error vector magnitude as a performance metric and comparative analysis
, 2006 In this paper, we present the error vector magnitude (EVM) as a a figure of merit for assessing the quality of digitally modulated telecommunication signals. We define EVM for a common industry standard and derive the relationships among EVM, signal to noise ratio (SNR) and bit error rate (BER).
Shafik, Rishad Ahmed +3 more
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Generalized Iterative Dichotomy PAPR Reduction Method for Multicarrier Waveforms
IEEE Access, 2021 5th generation systems (5G) will be based on Orthogonal Frequency Division Multiplexing (OFDM) multicarrier modulation technique. This modulation has a very high Peak to Average Power Ratio (PAPR).
Khaled Tahkoubit +4 more
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EVM Loss: A Loss Function for Training Neural Networks in Communication Systems
Sensors, 2021 Neural networks and their application in communication systems are receiving growing attention from both academia and industry. The authors note that there is a disconnect between the typical objective functions of these neural networks with regards to ...
Scott Stainton +3 more
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Power limits with adjustable 10G receiver parameters for A-RoF transmission
Elektronika ir Elektrotechnika, 2023 Current paper characterizes the performance of the three-radio-frequency-channels, orthogonal-frequency-division-multiplexed (OFDM) radio-over-fiber (RoF) transmission system in terms of error-vector-magnitude and received optical signal power for a ...
Inna Kurbatska +5 more
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Phase Noise Effect on Millimeter-Wave Pre-5G Systems
IEEE Access, 2020 The introduction of millimeter waves for 5G wireless communication systems enables the use of more bandwidth and higher carrier frequency, surpassing the capacity of current systems by more than one order of magnitude. The leap of millimeter band results
Jongho Oh, Tae-Kyoung Kim
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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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