Title :
Traceable Measurement of Source and Receiver EVM Using a Real-Time Oscilloscope
Author :
Humphreys, David A. ; Miall, J.
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 a 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. Measurement results at 1780 and 2510 MHz are also reported.
Keywords :
calibration; code division multiple access; digital storage oscilloscopes; measurement errors; measurement uncertainty; radio receivers; WCDMA; calibration; digital oscilloscope; error vector magnitude; frequency 900 MHz; measurement uncertainty; traceable receiver EVM measurement; traceable source EVM measurement; wideband code division multiple access; Instruments; Measurement uncertainty; Multiaccess communication; Radio frequency; Receivers; Spread spectrum communication; Uncertainty; Code-division multiaccess; communications equipment testing; measurement errors; oscilloscopes; test equipment; uncertainty;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.2013.2238458
