Title :
Traceable measurement of Error Vector Magnitude (EVM) in WCDMA signals
Author :
Humphreys, David A. ; Dickerson, Robert T.
Author_Institution :
Nat. Phys. Lab., Teddington
Abstract :
This 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 %.
Keywords :
calibration; code division multiple access; measurement errors; measurement uncertainty; oscilloscopes; spectral analysers; National Standards traceability; WCDMA RF sources; WCDMA signals; error vector magnitude; real-time digital oscilloscopes; rms uncertainty; sampling oscilloscopes; traceable measurement; waveform metrology; Electric variables measurement; Metrology; Multiaccess communication; Optical pulses; Oscilloscopes; Pulse generation; Pulse measurements; Radio frequency; Sampling methods; Semiconductor device measurement;
Conference_Titel :
Waveform Diversity and Design Conference, 2007. International
Conference_Location :
Pisa
Print_ISBN :
978-1-4244-1276-1
Electronic_ISBN :
978-1-4244-1276-1
DOI :
10.1109/WDDC.2007.4339424
