Title :
Traceable measurement of source and receiver EVM using a Real-Time Oscilloscope
Author :
Humphreys, David ; Miall, James
Author_Institution :
Nat. Phys. Lab., Teddington, UK
Abstract :
A method to traceably calibrate Wideband Code Division Multiple Access (WCDMA) Error Vector Magnitude (EVM) contributions of a source or receiver is described using a Real-Time Digital Oscilloscope as the reference receiver. The results and uncertainties are presented for a receiver calibrated using four WCDMA sources from different manufacturers. The weighted mean EVM of the receiver at 900 MHz is 0.35 ±0.03 % at 95% confidence.
Keywords :
calibration; code division multiple access; measurement uncertainty; oscilloscopes; radio receivers; WCDMA; calibration; code division multiple access error vector magnitude contribution; frequency 900 MHz; real-time digital oscilloscope; receiver EVM; reference receiver; source traceable measurement; Calibration; Measurement uncertainty; Multiaccess communication; Oscilloscopes; Receivers; Spread spectrum communication; Vectors; Error vector Magnitude; measurement uncertainty; mobile communications; real-time digital oscilloscope;
Conference_Titel :
Precision Electromagnetic Measurements (CPEM), 2012 Conference on
Conference_Location :
Washington, DC
Print_ISBN :
978-1-4673-0439-9
DOI :
10.1109/CPEM.2012.6250685
