<XML><RECORDS><RECORD><REFERENCE_TYPE>0</REFERENCE_TYPE><REFNUM>7144</REFNUM><AUTHORS><AUTHOR>Irvine,G.B.</AUTHOR><AUTHOR>Wang,L.</AUTHOR><AUTHOR>Dickman,P.</AUTHOR><AUTHOR>Cumming,D.R.S.</AUTHOR></AUTHORS><YEAR>2003</YEAR><TITLE>Variable-Rate Data Sampling for Low-Power Microsystems Using Modified Adams Methods</TITLE><PLACE_PUBLISHED>IEEE Transactions on Signal Processing, Volume 51, #12, December 2003</PLACE_PUBLISHED><PUBLISHER>IEEE</PUBLISHER><PAGES>3182--3190</PAGES><ISBN>1053-5888</ISBN><LABEL>Irvine:2003:7144</LABEL><KEYWORDS><KEYWORD>Adams methods</KEYWORD></KEYWORDS<ABSTRACT>A method for variable-rate data sampling is proposed for the purpose of low-power data acquisition in a small footprint microsystem. The procedure enables energy saving by utilizing dynamic power management techniques and is based on the Adams-Bashforth and Adams-Moulton multistep predictor-corrector methods for ordinary differential equations. Netwon-Gregory backward difference interpolation formulae and past value substitution are used to facilitate sample rate changes. It is necessary to store only 2m+1 equispaced past values of t and the corresponding values of y, where y = g(t), and m is the number of steps in the Adams methods. For the purposes of demonstrating the technique, fourth-order methods are used, but it is possible to use higher orders to improve accuracy if required.</ABSTRACT><NOTES>Digital Object Identifier: 10.1109/TSP.2003.819004</NOTES></RECORD></RECORDS></XML>