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Facta universitatis - series: Electronics and Energetics
2010, vol. 23, br. 3, str. 319-332
jezik rada: engleski
vrsta rada: neklasifikovan
objavljeno: 28/12/2010
doi: 10.2298/FUEE1003319T
Analysis and optimization of direct sequence spread spectrum scheme for an unmanned aerial vehicle PPM control signal
(naslov ne postoji na srpskom)
aRT-RK d.o.o., R&D Center for Computer Based Systems, Novi Sad
bInstitut za mikrotalasnu tehniku i elektroniku - IMTEL, Beograd

e-adresa: branislav.todorovic@rt-rk.com, cheggy@insimtel.com

Projekat

Projekat Ministarstva nauke Republike Srbije, br. ET-11037

Sažetak

(ne postoji na srpskom)
Binary pulse-position modulated (PPM) control signal is widely used in remotely controlled unmanned aerial vehicles. It consists of data frames, which contain a synchronizing pulse followed by a number of shorter pulses equal to the number of channels N. In this paper we present analysis and optimization of direct sequence spread spectrum (DS-SS) scheme for PPM control signal protection. That scheme uses (N+1) pseudonoise (PN) sequences: one of them (PN0) is assigned to the synchronizing pulse while the each of the remaining N sequences (PN1,PN2, . . . ,PNN) corresponds to the appropriate channel. At the receiving side, the set of (N+1) passive correlators is used to detect respective PN sequences and to reconstruct data. Onelevel and two-level detection are considered. Threshold settings optimization is based on the Neyman-Pearson procedure. As an additional performance measure we introduce probability of corruptive false alarms. Numerical results are presented.

Ključne reči

spread spectrum communication; unmanned aerial vehicle; pulse position modulation

Reference

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