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ROUND OFF ERROR PROPAGATION IN SIMULATION OF RC CIRCUIT SUBTITLE : SIMULATION OF RC CIRCUIT

Published In: INTERNATIONAL CONFERENCE ON ADVANCES IN COMPUTING AND INFORMATION TECHNOLOGY
Author(s): SHREYAS FADNAVIS

Abstract: Electrical devices often use RC, LC or RLC circuit to design power amplifiers, filters and mixers etc. Complex iterative algorithms are used for the simulation of these circuits. . This paper illustrates numerical experiments on growth of rounding off error in simulation of simple RC circuit using fourth order Runge-Kutta method (RK) and the Runge-Kutta-Fehlberg with adaptive step size control method (RKF). Our analysis indicates that in simulations with RK method, round off error grows ~ 80% with 10-15 iterations and ~96-98% within 100 iterations with different step sizes and double precision. In the simulations with RKF method round off error grows to 70% with 10-20 iterations and ~80% within 100 iterations. It does not exceed 80% for 1000 of iterations for single and double precision. This indicates that growth of round off error in RKF method is less and it should be used to minimize round off error.

  • Publication Date: 05-Jan-2014
  • DOI: 10.15224/978-981-07-8859-9-10
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SOFTWARE POWER ANALYSIS FOR EMBEDDED DSP SOFTWARE

Published In: INTERNATIONAL CONFERENCE ON ADVANCES IN COMPUTING AND INFORMATION TECHNOLOGY
Author(s): K.S.GURUMURTHY , K.S.GURUMURTHY

Abstract: Power is a major design constraint for low power applications. Its consumption during the execution of the software program is an important issue in designing low power embedded devices. This so called software power can be reduced in many ways. By manipulating the instructions in a code, software related power could be reduced. This work brings about the efficient scheme for instruction level software power analysis for TMS320C6713 DSP processor. This is achieved by measuring the average instantaneous current drawn and hence power dissipated by the processor as it repeatedly executes the set of instructions.

  • Publication Date: 05-Jan-2014
  • DOI: 10.15224/978-981-07-8859-9-11
  • Views: 0
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