An RF Carrier Bursting System using Partial Quantization Noise Cancellation
Artikel i vetenskaplig tidskrift, 2012
This paper introduces a novel method for bandpass cancellation of the quantization noise occurring in high efficiency, envelope pulsed transmitter architectures - or carrier bursting. An equivalent complex baseband model of the proposed system, including the Sigma Delta-modulator and cancellation signal generation, is developed. Analysis of the baseband model is performed, leading to analytical expressions of the power amplifier drain efficiency, assuming the use of an ideal class B power amplifier. These expressions are further used to study the impact of key system parameters, i.e. the compensation signal variance and clipping probability, on the class~B power amplifier drain efficiency and signal-to-noise ratio.
The paper concludes with simulations followed by practical measurements in order to validate the functionality of the method and to evaluate the performance-trend predictions made by the theoretical framework in terms of efficiency and spectral purity.
Författare
Ulf Gustavsson
Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik
GigaHertz Centrum
Thomas Eriksson
Chalmers, Signaler och system, Kommunikationssystem, informationsteori och antenner
GigaHertz Centrum
Hossein Mashad Nemati
Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik
GigaHertz Centrum
Paul Saad
GigaHertz Centrum
Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik
Peter Singerl
Infineon Technologies AG, Austria
Christian Fager
Chalmers, Mikroteknologi och nanovetenskap (MC2), Mikrovågselektronik
GigaHertz Centrum
IEEE Transactions on Circuits and Systems I: Regular Papers
1549-8328 (ISSN)
Vol. 59 3 515-528 2167271Styrkeområden
Informations- och kommunikationsteknik
Ämneskategorier (SSIF 2011)
Kommunikationssystem
Signalbehandling
DOI
10.1109/TCSI.2011.2167271