Design of ODMA Digital Waveforms Using Non-Convex Optimization Methods

Zhuquan Zang () and Sven Nordholm

Annals of Operations Research, 2005, vol. 133, issue 1, 319-330

Abstract: This paper presents a new approach for the design of a set of orthogonal digital filters which can be used as message-carrying waveforms in orthogonality division multiple access (ODMA) communication systems. The filter set design problem is formulated as a constrained L 2 space optimization problem. For bandwidth efficiency, all the digital filters in the set are constrained to have approximately the same desired spectral shapes in a prescribed passband; To minimize intersymbol interference and co-channel interference, all the digital filters in the set are constrained to have low values of auto-correlation at nonzero translates of multiple symbol interval and low values of cross-correlation at all translates of multiple symbol interval. Methods for solving the proposed non-convex optimization problem are outlined. Numerical results are presented to illustrate the usefulness of the proposed method. Copyright Springer Science + Business Media, Inc. 2005

Keywords: non-convex optimization; max-min type constraints; correlation constraints; spectral shaping; co-channel interference; intersymbol interference; multiple access communications (search for similar items in EconPapers)
Date: 2005
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DOI: 10.1007/s10479-004-5041-y

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