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This paper proposes an algorithm to design band-limited Orthogonal Frequency Division Multiplexing (OFDM) pulses for accurate time-of-flight ranging in acoustic-based localization systems. The proposed algorithm is capable to generate OFDM pulses with higher energy when compared with other common pulse design approaches with similar characteristics. The results attained have shown that it is possible...
In wireless sensor networks (WSNs) the position information of individual nodes is a matter of vital importance because allows the implementation of necessary network functions such as routing, querying and other applications. The objective of this paper is to propose an algorithm of three-dimensional distributed range-free localization for WSNs, using an unmanned aerial vehicle (UAV) equipped with...
In this paper, a concurrent design methodology to formulate the mechatronic design problem of the planar five revolute two degrees of freedom (5R 2DoF) parallel robot and its PID controller is presented. This methodology involves a synergetic design of the mechanical structure and the control system. A nonlinear dynamic optimization problem is stated for this approach and two optimization techniques,...
Multilevel converters can meet the increasing demand of power ratings and power quality associated with reduced harmonic distortion and lower electromagnetic interference. When the number of levels increases, it is necessary to control more and more switches in parallel. Field programmable gate arrays (FPGAs), with their concurrent processing capability, are suitable for the implementation of multilevel...
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