Behavioral Modeling and Linearization of Crosstalk and Memory Effects in RF MIMO Transmitters
Artikel i vetenskaplig tidskrift, 2014

This paper proposes three novel models for behavioral modeling and digital pre-distortion (DPD) of nonlinear 2 x 2 multiple-input multiple-output (MIMO) transmitters in the presence of crosstalk. The proposed models are extensions of the single-input single-output generalized memory polynomial model. Three types of crosstalk effects were studied and characterized as linear, nonlinear, and nonlinear & linear crosstalk. A comparative study was performed with previously published models for the linearization of crosstalk in a nonlinear 2 x 2 MIMO transmitter. The experiments indicate that, depending on the type of crosstalk, the selection of the correct model in the transmitter is necessary for behavioral modeling and sufficient DPD performance. The effects of coherent and partially noncoherent signal generation on the performance of DPD were also studied. For crosstalk levels of 30 dB, the difference in the normalized mean square error and adjacent channel power ratio was found to be 3-4 dB between coherent and partially noncoherent signal generation.

Behavioral modeling

V83

NONLINEAR-SYSTEMS

POWER-AMPLIFIERS

multiple-input multiple-output (MIMO)

POLYNOMIALS

MODEL

VOLTERRA

DIGITAL PREDISTORTION

ARCHITECTURE

nonlinear and linear crosstalk

PROCEEDINGS OF THE IEEE

EN HW

digital pre-distortion (DPD)

P39

COMPENSATION

RF

power amplifiers (PAs)

1995

Författare

S. Amin

Kungliga Tekniska Högskolan (KTH)

Hogskolan i Gavle

Per Landin

Chalmers, Signaler och system, Kommunikationssystem, informationsteori och antenner, Kommunikationssystem

GigaHertz Centrum

P. Handel

Kungliga Tekniska Högskolan (KTH)

Hogskolan i Gavle

D. Ronnow

Hogskolan i Gavle

IEEE Transactions on Microwave Theory and Techniques

0018-9480 (ISSN)

Vol. 62 4 810-823

Ämneskategorier

Elektroteknik och elektronik

DOI

10.1109/tmtt.2014.2309932