Ultra-wideband orthogonal pulse shape set design by using Hermite-Gaussian functions

Date
2012
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Source Title
2012 20th Signal Processing and Communications Applications Conference (SIU)
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Publisher
IEEE
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Language
Turkish
Type
Conference Paper
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Abstract

Ultra-Wideband (UWB) communication systems have been developed for short distance, high data rate communications. To avoid interfering with the existing systems in the same environment, very short duration pulses used by these systems should satisfy a predefined spectral mask. Data rate of UWB systems can be increased by using multiple pulse shapes simultaneously. Orthogonality of the simultaneously used pulse shapes simplifies the receiver design. In this work, design of orthogonal pulse shapes which satisfy the spectral mask is modelled as an optimization problem. First, it is converted to a convex optimization problem by constraining the pulse shapes to lie in a subspace spanned by the Hermite-Gaussian (HG) functions. Then the optimal solution is obtained. It is shown that a larger pulse shape set can be designed compared to the existing approaches, and hence, a higher data rate can be achieved. © 2012 IEEE.

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Keywords
Convex optimization problems, Data rates, Existing systems, Hermite-Gaussian function, High data rate communications, Multiple pulse, Optimal solutions, Optimization problems, Orthogonal pulse, Orthogonality, Pulse shapes, Receiver design, Short distances, Short duration pulse, Spectral masks, Ultra wideband communication systems, UWB system, Broadband networks, Convex optimization, Design, Signal processing, Telecommunication systems, Ultra-wideband (UWB)
Citation
Published Version (Please cite this version)