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Reducing error vector magnitude of OFDM signals using threshold vector circle method
SPIE Proceedings, 2016The main disadvantage of Orthogonal Frequency Division Multiplexing (OFDM) signal is the high peak-to-average power ratio (PAPR) which influences the system power efficiency and system performance in the presence of nonlinearities within the high power amplifier (HPA). The error vector magnitude (EVM) is one of the performance metrics by communications
Jingqi Wang +4 more
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Study of Digital Modulation Signal Error Vector Magnitude Based on Vector Signal Analyzer
2015 8th International Symposium on Computational Intelligence and Design (ISCID), 2015In this article, based on the working principle of vector signal analyzer and theories of error vector magnitude (EVM), Combined signal demodulation experiment of vector signal analyzer, converting some types of digital modulation signal EVM into root mean square of error vector magnitude(EVMRMS).
Huan Li, Wenhua Ye
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Effective evaluation of link quality using error vector magnitude techniques
Proceedings of 1997 Wireless Communications Conference, 2002Bit error rate (BER) is an accepted figure of merit in the industry for the characterization of transmission link quality and communications systems in general. While useful as a conceptual figure of merit, it suffers from a number of practical drawbacks that compromise its value as a standard test in manufacturing or maintenance.
R. Hassun +3 more
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Traceable measurement of Error Vector Magnitude (EVM) in WCDMA signals
2007 International Waveform Diversity and Design Conference, 2007This is the first report of a methodology to provide national standards traceability for EVM measurement of WCDMA RF sources using waveform metrology techniques. The method uses sampling oscilloscopes or real-time digital oscilloscopes. Preliminary results indicate that the rms uncertainty of the modulation waveform, at 95% confidence, is less than 0.3
David A. Humphreys, Robert T. Dickerson
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Test setup for error vector magnitude measurement on WLAN transceivers
2012 19th IEEE International Conference on Electronics, Circuits, and Systems (ICECS 2012), 2012This paper presents a measurement system and experimental examples of error vector magnitude measurements on a wireless local area network receiver under several radio frequency impairments, with emphasis to local oscillator phase noise. An algorithm that cancels the phase and frequency carrier synchronization error is presented.
Vitor Fialho +2 more
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Replacing Error Vector Magnitude Test with RF and Analog BISTs
IEEE Design & Test of Computers, 2011RF and analog BIST techniques are capable of replacing the traditional error vector magnitude (EVM) test used in production. In a case study, four BISTs detected actual production faults in a commercial, highly integrated WLAN device. In combination with traditional digital testing, the BISTs caught an impressive 100% of EVM failures during production ...
Dallas Webster, Rick Hudgens, Donald Lie
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V-band six-port quadrature demodulator : Error Vector Magnitude analysis
Global Symposium on Millimeter-Waves (GSMM), 2015Direct conversion quadrature demodulator analysis based on recently fabricated V-band six-port circuit operating over 60 GHz band is presented in this paper. In order to obtain realistic system simulation results, the computer model of the six-port demodulator is implemented using Advanced Design System (ADS) software and S-parameter measurements of ...
C. Hannachi +3 more
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Error vector magnitude to SNR conversion for nondata-aided receivers
IEEE Transactions on Wireless Communications, 2009Error vector magnitude (EVM) is one of the widely accepted figure of merits used to evaluate the quality of communication systems. In the literature, EVM has been related to signal-to-noise ratio (SNR) for data-aided receivers, where preamble sequences or pilots are used to measure the EVM, or under the assumption of high SNR values.
H.A. Mahmoud, H. Arslan
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On full-duplex link performance under consideration of error vector magnitude
2014 IEEE Wireless Communications and Networking Conference (WCNC), 2014The effect of Error Vector Magnitude (EVM) to the performance of a full-duplex bi-directional link is studied. EVM is modelled as independent Gaussian noise, which is sent together with the original signal by the transmitter. A simplified self-interference cancellation model at the full-duplex receiver is considered. It suppresses the self-interference
Wei Li, Jorma Lilleberg
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Millimeter-Wave Modulated-Signal and Error-Vector-Magnitude Measurement With Uncertainty
IEEE Transactions on Microwave Theory and Techniques, 2015We provide techniques to generate and characterize precision wideband millimeter-wave modulated signals. We use predistortion to obtain a significant improvement in signal quality and an associated reduction in the error vector magnitude (EVM) of the signals generated by an arbitrary-waveform-generator-based source.
Kate A. Remley +5 more
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