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Laboratory system for a traceable measurement of error vector magnitude
Laboratory system for a treceable measurment of error vector magnitude, proceedings of the 39th European Microwave Confrence, Rome, Italy......
JB - Senzory, čidla, měření a regulace
- 2009 •
- D
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D - Stať ve sborníku
Error Vector Magnitude Used with Low-Complex Bit Loading in Orthogonal Frequency Division Multiplexing
This paper describes the adaptive bit loading of Orthogonal Frequency Division Multiplexing. The use of Error Vector Magnitude in greedy algorithm as well as in the particle swarm optimization is discussed. The results are ...
JA - Elektronika a optoelektronika, elektrotechnika
- 2011 •
- D
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D - Stať ve sborníku
Waveform metrology for error vector magnitude measurements in a 300 GHz transmission system
The paper presents results of error vector magnitude (EVM) measurements in a 300 GHz transmission system. The EVM was determined using real-time oscilloscope and consecutive mathematical processing in a computer instead of ...
JB - Senzory, čidla, měření a regulace
- 2012 •
- D •
- Link
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Use of The Error Vector Magnitude for low-complex bit loading in Orthogonal Frequency Division Multiplexing
This paper deals with the adaptive bit loading of Orthogonal Frequency Division Multiplexing. The use of Error Vector Magnitude in greedy algorithm as well as in the particle swarm optimization is discussed. The results are...
JA - Elektronika a optoelektronika, elektrotechnika
- 2011 •
- D
Rok uplatnění
D - Stať ve sborníku
Analysis of high-speed optical data transmission using advanced modulation formats
The paper introduces recent advances in optical communications, in particular coherent transmission systems with multilevel modulation schemes (QPSK, 16QAM). Currently metrological traceability is missing for quality metrics of the signal, which is t...
JB - Senzory, čidla, měření a regulace
- 2014 •
- D •
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Analytical EVM calculation for OFDM systems with nonlinear power amplifiers
This paper presents a theoretical calculation of the Error Vector Magnitude (EVM) on the decision variables for an OFDM system with a memoryless nonlinear power amplifier. The analytical expression of the EVM is given in th...
JA - Elektronika a optoelektronika, elektrotechnika
- 2003 •
- D
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D - Stať ve sborníku
BER Estimation from EVM for QPSK and 16-QAM Coherent Optical Systems
BER estimation from measured EVM values is shown experimentally for QPSK and 16QAM optical signals with 28 GBd. Various impairments, such as gain imbalance, quadrature error and timing skew, are introduced into the transmitted signal in orde...
JA - Elektronika a optoelektronika, elektrotechnika
- 2016 •
- D •
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Accuracy of Multilayer Equivalent Models For Composite Laminated Materials
within range of frequencies 100 MHz to 20000 MHz. Magnitude errors of coefficients. These models are based on scalar or incomplete vector measurements of coefficients S11, S22 and S21. Agreement between simulated values of...
JA - Elektronika a optoelektronika, elektrotechnika
- 2009 •
- D
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D - Stať ve sborníku
Optical and RF metrology for 5G
Specification standards will soon be available for 5G mobile RF communications. What optical and electrical metrology is needed or available to support the development of the supporting optical communication systems? Device measurement, digital oscil...
Communication engineering and systems
- 2017 •
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The effect of matched filtering with programmable root raised cosine filter on error vector magnitude of m-qam broadband over visible light
This paper investigates the Error Vector Magnitude (EVM) obtained using different parameters of Root Raised Cosine Filter (RRCF) for Visible Light Communication. This sophisticated measuring system is built by vector
Electrical and electronic engineering
- 2017 •
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