Blind Identification and Digital Calibration of Volterra Model Based on Least Mean Square Method

DOI

10.2991/3ca-13.2013.1How to use a DOI?

Keywords

Volterra model; Least Mean Square (LMS); memory nonlinearity; blind sysmtem identification

Abstract

Nonlinear distortions and memory effect of broadband receiver’s front-end are canceled out simultaneously using a digital post-calibration technique based on Volterra model. This paper develops a least mean squared blind identification criterion for the measurement of the model parameters without prior knowledge of the received signals, and the optimization goal could be described as for the minimizing of total energy of the calibrated outputs that located in the first Nyquist band other than strong signals. Frequency locations of the distortions are availably determined by the comparison between the input and output spectrums of a digital nonlinear polynomial with fixed coefficients. Experimental results on the actual nonlinear circuit show that with the proposed technique, 15 dB improvement in Spurs-Free-Dynamic-Range with multi-tone excitation signal is achieved. High-speed, high-precision Software Defined Radio systems would benefit much from the novel technical solution presented in the paper.

Copyright

© 2013, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Peng Liang
AU  - Haihua Deng
AU  - Ming Chen
PY  - 2013/04
DA  - 2013/04
TI  - Blind Identification and Digital Calibration of Volterra Model Based on Least Mean Square Method
BT  - Proceedings of the 2nd International Symposium on Computer, Communication, Control and Automation
PB  - Atlantis Press
SP  - 1
EP  - 5
SN  - 1951-6851
UR  - https://doi.org/10.2991/3ca-13.2013.1
DO  - 10.2991/3ca-13.2013.1
ID  - Liang2013/04
ER  -