Orthogonal waveform design for UWB radios

Xianren Wu, Zhi Tian, T. N. Davidson, Georgios B. Giannakis

Research output: Contribution to conferencePaperpeer-review

25 Scopus citations

Abstract

Pulse waveforms with overlapping yet orthogonal spectra are desired in high-rate multidimensional modulation and (carrier-free) orthogonal frequency division multiple access. To this end, we propose a digital filter solution to orthogonal pulse design for UWB impulse radios. A sequential design strategy is used in which the filter tap coefficients generating a new pulse are imposed with linear constraints to guarantee (spectral) orthogonality to all previously designed pulses. By formulating the overall pulse design problem as a set of convex sub-problems, a sequence of orthogonal waveforms can be efficiently obtained using convex optimization methods. Complying with a prescribed (FCC) spectral mask, our orthogonal waveforms enjoy high power utilization efficiency compared with other orthogonal waveform alternatives.

Original languageEnglish (US)
Pages150-154
Number of pages5
StatePublished - Dec 1 2004
Event2004 IEEE 5th Workshop on Signal Processing Advances in Wireless Communications, SPAWC - Lisbon, Portugal
Duration: Jul 11 2004Jul 14 2004

Other

Other2004 IEEE 5th Workshop on Signal Processing Advances in Wireless Communications, SPAWC
Country/TerritoryPortugal
CityLisbon
Period7/11/047/14/04

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