TY - GEN
T1 - Estimation for amplify-and-forward transmissions with nonlinear amplifiers
AU - Santucci, Robert
AU - Banavar, Mahesh K.
AU - Spanias, Andreas
AU - Tepedelenlioglu, Cihan
PY - 2013/7/18
Y1 - 2013/7/18
N2 - This paper describes the development of a distributed estimation algorithm for amplify-and-forward sensor transmissions with realistic nonlinear amplifier models at the sensors. Specifically, an algorithm is developed that enables distributed estimation with amplifiers operating in the non-linear class AB region. In this system, a digital predistortion scheme is utilized to fit an amplifier to a mathematically tractable, known nonlinearity that is close to the compression characteristics of the amplifier. We show using this scheme has two benefits over linear amplifier operation: improved transmitter efficiency and reduced sensitivity to heavy-tailed distributions due to the soft saturation. The amplifier characteristics and predistortion methods are presented as part of the Java-DSP software package.
AB - This paper describes the development of a distributed estimation algorithm for amplify-and-forward sensor transmissions with realistic nonlinear amplifier models at the sensors. Specifically, an algorithm is developed that enables distributed estimation with amplifiers operating in the non-linear class AB region. In this system, a digital predistortion scheme is utilized to fit an amplifier to a mathematically tractable, known nonlinearity that is close to the compression characteristics of the amplifier. We show using this scheme has two benefits over linear amplifier operation: improved transmitter efficiency and reduced sensitivity to heavy-tailed distributions due to the soft saturation. The amplifier characteristics and predistortion methods are presented as part of the Java-DSP software package.
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U2 - 10.1049/ic.2013.0021
DO - 10.1049/ic.2013.0021
M3 - Conference contribution
AN - SCOPUS:84880086876
SN - 9781849197335
T3 - IET Seminar Digest
BT - Constantinides International Workshop on Signal Processing, CIWSP 2013
T2 - Constantinides International Workshop on Signal Processing, CIWSP 2013
Y2 - 25 January 2013 through 25 January 2013
ER -