Some Properties of Orthogonal Galois-Field Spreading Sequences

João Paulo Cruz Lopes Miranda, Hélio Magalhães De Oliveira

DOI: 10.14209/sbrt.2001.07900113

Evento: XIX Simpósio Brasileiro de Telecomunicações (SBrT2001)

Keywords: Spread Spectrum Finite Transforms Galois-Division Multiple Access.

Abstract

"Orthogonal Galois-field spreading sequences are a new tool to perform multilevel direct sequence spread spectrum communication (DS-SS). By defining a generalised finite field correlation, main properties of these digital sequences are derived. Besides, it is shown that good correlation properties of these “carriers” allow anti-jamming and multiple access capabilities. Systems which employ Galois-field spreading sequences are the so-called Galois-Division Multiple Access (GDMA). An attempt to classify GDMA signals as spread spectrum signals, by means of a more elegant treatment, is also supplied."

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