Original title: Optimalizace odhadu vzdálenosti v bezdrátové ad-hoc síti
Translated title: Distance Estimation in Wireless Ad-hoc Network
Authors: Botta, Miroslav ; Mráz, Ľubomír (referee) ; Šimek, Milan (advisor)
Document type: Master’s theses
Year: 2011
Language: slo
Publisher: Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií
Abstract: [slo] [eng]
Práca sa zaoberá spracovávaním prijímanej výkonovej úrovne rádiového signálu štandardu IEEE 802.15.4 komunikujúceho v ISM pásme 2,4GHz. Signál je spracovávaný pomocou troch aproximačných metód. Testuje sa ich efektivita pre meranie v rôznych rádiových prostrediach. Ďalej sa práca zaoberá výpočtom najefektívnejších koeficientov pre výpočet vzdialenosti pomocou logaritmického útlmového modelu. Definuje problematiku takéhoto riešenia na praktických ukážkach. Práca sa ďalej zaoberá experimentálnym algoritmom pre implementovanie dynamickej kalibrácie koeficientov. Je prevedený návrh, spracovanie a overenie tohoto systému v praxi. The work deals with processing of radio received signal strength in IEEE 802.15.4 which communicates in 2.4 GHz ISM band. The signal is processed by the three approximation methods. They are tested for their effectiveness for measuring in different radio environments. Furthermore, the work deals with calculation of the most efficient coefficients for distance calculating by radio transmission fucntions. It defines the issues of such solutions on practical examples. The work also deals with the experimental algorithm for implementing dynamic calibration of the coefficients. It describes the design, processing and verification of this system in practice.
Keywords: approximation algorithms; CTP; distance measurement; dynamic calibration; IEEE 802.15.4; RSSI; static; TinyOS; Wireless sensor networks

Institution: Brno University of Technology (web)
Document availability information: Fulltext is available in the Brno University of Technology Digital Library.
Original record: http://hdl.handle.net/11012/3814

Permalink: http://www.nusl.cz/ntk/nusl-611015


The record appears in these collections:
Universities and colleges > Public universities > Brno University of Technology
Academic theses (ETDs) > Master’s theses