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Two-way 5G NR FSO-HCF-UWOC converged systems with R/G/B 3-wavelength and SLM-based beam-tracking scheme. [PDF]
Sci RepHayle ST +9 more
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Reconstruction of OFDM Signals Using a Dual Discriminator CGAN with BiLSTM and Transformer. [PDF]
Sensors (Basel)Li Y, Fan Y, Hou S, Niu Y, Fu Y, Li H.
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SLIC EVM — Error vector magnitude without demodulation
2017 89th ARFTG Microwave Measurement Conference (ARFTG), 2017We present a method for measuring a communication signal's inband error caused by a non-ideal device under test (DUT). In contrast to the established error vector magnitude (EVM), we do not demodulate the data symbols. Rather, we subtract linearly correlated (SLIC) parts from the DUT output and analyze the power spectral density of the remaining error ...
Karl Freiberger +2 more
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Enhanced error vector magnitude (EVM) measurements for testing WLAN transceivers
Proceedings of the 2006 IEEE/ACM international conference on Computer-aided design - ICCAD '06, 2006As wireless LAN devices become more prevalent in the consumer electronics market, there is an ever increasing pressure to reduce their overall cost. The test cost of such devices is an appreciable percentage of the overall cost, which typically results from the high number of specifications, the high number of distinct test set-ups and equipment pieces
Erkan Acar, Sule Ozev, Kevin Redmond
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The Error Vector Magnitude (EVM) performance in LTE Downlink
2019 Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC), 2019The Error Vector Magnitude (EVM) is a useful magnitude in the development and design process to indicate the entire signal quality. The post-equalized signal has better performance than pre-equalized signal due to its robustness against noise during channel equalization processing under ideal and interpolation channel estimation.
Hsuan-Fu Wang +2 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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Error Vector Magnitude (EVM)-Based Constellation Combiner for Cooperative Relay Network
IEEE Communications Letters, 2016This letter proposes a novel diversity combining technique based on error vector magnitude (EVM) for a cooperative relay network. EVM is the vector difference for a given time between the transmitted signal and the received signal. At the destination, the proposed combiner combines the minimum EVM constellations obtained from the received links ...
Mugelan Ramakrishnan Kuppusamy +2 more
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2005 IEEE International Symposium on Circuits and Systems, 2005
A main concern in the testing of systems fulfilling the enhanced general packet radio service (EGPRS) requirements is the proper measurement of the error vector magnitude (EVM) for the implemented 8PSK modulator. However, handsets supporting EGPRS also incorporate a GMSK modulator and hence, in order to reduce computing time on the production tester by
M. Helfenstein +3 more
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A main concern in the testing of systems fulfilling the enhanced general packet radio service (EGPRS) requirements is the proper measurement of the error vector magnitude (EVM) for the implemented 8PSK modulator. However, handsets supporting EGPRS also incorporate a GMSK modulator and hence, in order to reduce computing time on the production tester by
M. Helfenstein +3 more
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The Numerical Simulation and Experiment Research for Measurement of Error Vector Magnitude (EVM)
Applied Mechanics and Materials, 2011Wireless communications is one of the main industrial areas that require metrological support. However, Error Vector Magnitude (EVM), which is one of most important parameters used to define the performance of wireless communications equipment qualitatively, is facing some difficulties in making traceable measurement. In order to research the effect of
Hong Fang, Xin Bian, Xin Zhou, Ke Liu
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