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Nonlinear distortion noise and linear attenuation in MIMO systems - theory and application to multiband transmitters
Högskolan i Gävle, Akademin för teknik och miljö, Avdelningen för elektroteknik, matematik och naturvetenskap, Elektronik.ORCID-id: 0000-0003-2887-049x
Signal Processing, Royal Institute of Technology, Stockholm, Sweden.
2019 (engelsk)Inngår i: IEEE Transactions on Signal Processing, ISSN 1053-587X, E-ISSN 1941-0476, Vol. 67, nr 20, s. 5203-5212Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Nonlinear static multiple-input multiple-output (MIMO) systems are analyzed. The matrix formulation of Bussgang's theorem for complex Gaussian signals is rederived and put in the context of the multivariate cumulant series expansion. The attenuation matrix is a function of the input signals' covariance and the covariance of the input and output signals. The covariance of the distortion noise is in addition a function of the output signal's covariance. The effect of the observation bandwidth is discussed. Models of concurrent multiband transmitters are analyzed. For a transmitter with dual non-contiguous bands expressions for the normalized mean square error (NMSE) vs input signal power are derived for uncorrelated, partially correlated, and correlated input signals. A transmitter with arbitrary number of non-contiguous bands is analysed for correlated and uncorrelated signals. In an example, the NMSE is higher when the input signals are correlated than when they are uncorrelated for the same input signal power and it increases with the number of frequency bands. A concurrent dual band amplifier with contiguous bands is analyzed; in this case the NMSE depends on the bandwidth of the aggregated signal.

sted, utgiver, år, opplag, sider
IEEE, 2019. Vol. 67, nr 20, s. 5203-5212
Emneord [en]
Bussgang theory, carrier aggregation, concurrent dual band, MIMO, multiband transmitter, nonlinear distortion
HSV kategori
Identifikatorer
URN: urn:nbn:se:hig:diva-30580DOI: 10.1109/TSP.2019.2935896ISI: 000485741500001OAI: oai:DiVA.org:hig-30580DiVA, id: diva2:1345533
Merknad

Funding: European Commission within the European Regional Development Fund;   Swedish Agency for Economic and Regional Growth; Region Gavleborg

Tilgjengelig fra: 2019-08-26 Laget: 2019-08-26 Sist oppdatert: 2019-10-14bibliografisk kontrollert

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