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Type: Artigo de evento
Title: Power Reduction On Qpsk Modulation Codings For Geopositioning Application Using Leo Satellites
Author: Marins C.N.M.
Kaufmann P.
Ferreira Jr. A.A.
De Paiva M.C.
Swart J.W.
Da Silveira A.C.
Abstract: Minimum transmission power using transponders in low earth orbit satellite is a major requirement for the new geo-positioning system, known as Geolocal. It utilises a repeater in space and ground-based precise geodetic reference bases. We discuss and compare two digital codings on the QPSK (quadrature phase shift keying) modulation: concatenated Reed-Solomon/Convolutional Coding and concatenated BCH (Bose-Chaudhuri-Hocquenghem) with LDPC (Low Density Parity Code). We show that the latter brings 8 dB power gain on the whole two-way ground to satellite link allowing a reduction in the power requirements on the small platforms carrying the ttransponders. ©2009IEEE.
Citation: Sbmo/ieee Mtt-s International Microwave And Optoelectronics Conference Proceedings. , v. , n. , p. 282 - 285, 2009.
Rights: fechado
Identifier DOI: 10.1109/IMOC.2009.5427582
Date Issue: 2009
Appears in Collections:Unicamp - Artigos e Outros Documentos

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