Open AccessEvaluation of error vector magnitude due to combined IQ imbalances and phase noise
Author(s) -
Georgiadis Apostolos,
Kalialakis Christos
Publication year - 2014
Publication title -
iet circuits, devices and systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.251
H-Index - 49
eISSN - 1751-8598
pISSN - 1751-858X
DOI - 10.1049/iet-cds.2013.0338
Subject(s) - magnitude (astronomy) , noise (video) , phase (matter) , physics , computer science , artificial intelligence , astrophysics , quantum mechanics , image (mathematics)
Novel closed form expressions for the error vector magnitude (EVM) are presented. The expressions combine the in‐phase quadrature (IQ) amplitude and phase imbalances and the DC offsets along with the phase noise. Both the Gaussian and the Tikhonov probability density functions are utilised for the oscillator phase noise distribution. The explicit conditions when the EVM computations based on the Tikhonov distribution converge to a Gaussian based are investigated. Furthermore, the application of the proposed EVM expressions is demonstrated by including phase noise masks, providing a direct means to the phase locked loop/voltage controlled oscillator design parameters. The measurements are used to validate the proposed expressions.