An RF Carrier Bursting System using Partial Quantization Noise Cancellation
Journal article, 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.
Author
Ulf Gustavsson
Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics
GigaHertz Centre
Thomas Eriksson
Chalmers, Signals and Systems, Kommunikationssystem, informationsteori och antenner
GigaHertz Centre
Hossein Mashad Nemati
Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics
GigaHertz Centre
Paul Saad
GigaHertz Centre
Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics
Peter Singerl
Infineon Technologies AG, Austria
Christian Fager
Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics
GigaHertz Centre
IEEE Transactions on Circuits and Systems I: Regular Papers
1549-8328 (ISSN)
Vol. 59 3 515-528 2167271Areas of Advance
Information and Communication Technology
Subject Categories (SSIF 2011)
Communication Systems
Signal Processing
DOI
10.1109/TCSI.2011.2167271