DocumentCode :
3607017
Title :
Equivalent Complex Baseband Model for Digital Transmitters Based on 1-bit Quadrature Pulse Encoding
Author :
Ruotsalainen, Henri ; Leder, Norbert ; Pichler, Bernhard ; Arthaber, Holger ; Magerl, Gottfried
Author_Institution :
Inst. of Electrodynamics, Vienna Univ. of Technol., Vienna, Austria
Volume :
62
Issue :
11
fYear :
2015
Firstpage :
2739
Lastpage :
2747
Abstract :
In this paper an equivalent complex baseband representation of the analog component related non-linearity of digital transmitters relying on 1-bit complex baseband encoding is derived. By exploiting the properties of the pulsed RF encoding the novel behavioral modeling technique is able to represent accurately the non-linear memory effects of the power amplification stage. Furthermore, a band-limited kernel technique leads to more efficient modeling of the complete digital transmitter, and to relaxed sampling rate. For the parameter estimation the linear regression, common to Volterra model identification, can be employed. According to the simulation and measurement based verification results, the novel modeling technique excels the state-of-the-art in terms of modeling accuracy. It can be assumed that the given methodology serves both as a basis for future behavioral models and for the development of advanced encoding techniques for linearization purposes.
Keywords :
linear codes; modulation coding; nonlinear codes; parameter estimation; pulse code modulation; radio transmitters; regression analysis; Volterra model identification; analog component equivalent complex baseband representation model; band-limited kernel technique; complex baseband encoding; digital transmitter nonlinearity; linear regression; linearization purpose; nonlinear memory effects; parameter estimation; power amplification stage; pulsed RF encoding; quadrature pulse encoding; storage capacity 1 bit; Baseband; Computational modeling; Encoding; Nickel alloys; Radio frequency; Silicides; Transmitters; Behavioral modeling; radio frequency power amplifiers; sigma delta modulation; software defined radio;
fLanguage :
English
Journal_Title :
Circuits and Systems I: Regular Papers, IEEE Transactions on
Publisher :
ieee
ISSN :
1549-8328
Type :
jour
DOI :
10.1109/TCSI.2015.2476395
Filename :
7276956
Link To Document :
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