By Topic

Fast adaptive wide-band power amplifier feed-forward linearizer

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
J. -T. Chen ; Inf. Syst. Lab., Stanford Univ., CA, USA ; H. -S. Tsai ; Y. -K. Chen

A new algorithm is proposed for a wide-band power amplifier (PA) feed-forward linearizer applying DSP techniques. Using a PA model with memory and the input signal statistics, we effectively predict the linearizer parameters. Unlike other methods, this algorithm does not suffer from the slow-convergence problem. Two major factors cause the control parameters to be time-varying: the input signal statistics and other time-dependent environment factors. The input signal statistics are the fast time-varying factors, while the time-dependent environment factors or equivalently the PA operating point are the slow time-varying ones. In the proposed algorithm, we try to separate the fast time-varying factors from the slow time-varying ones. The input signal statistics are difficult to track but are assumed to be known to the system. Therefore, we only need to track the slow-varying PA operating point, represented by the coefficients of a proposed PA model, to determine the control parameters of the PA linearizer

Published in:

Vehicular Technology Conference, 1998. VTC 98. 48th IEEE  (Volume:3 )

Date of Conference:

18-21 May 1998