Responsive image
博碩士論文 etd-0825110-225737 詳細資訊
Title page for etd-0825110-225737
論文名稱
Title
結合渦輪碼之多跳躍式無線感測網路研究
A Study on Multi-Hop Wireless Sensor Networks with Turbo Code
系所名稱
Department
畢業學年期
Year, semester
語文別
Language
學位類別
Degree
頁數
Number of pages
79
研究生
Author
指導教授
Advisor
召集委員
Convenor
口試委員
Advisory Committee
口試日期
Date of Exam
2009-07-21
繳交日期
Date of Submission
2010-08-25
關鍵字
Keywords
無線感測網路、融合法則、多跳躍式
sensor network, multi-hop, fusion rule
統計
Statistics
本論文已被瀏覽 5636 次,被下載 0
The thesis/dissertation has been browsed 5636 times, has been downloaded 0 times.
中文摘要
無線感測網路利用許多個感測器散佈在環境中去收集資訊。每一個感測器會去處理其所接收到的資訊,並且每一個感測器是有能力透過無線通道與其他感測器及融合中心溝通。
近年來許多文獻針對無線感測網路所遭遇到的問題詳加討論,例如路由的協定、分散式資料的壓縮及傳輸及合作式的信號處理,我們主要探討融合中心的資料處理。
傳統的無線感測網路中,感測網路的決策是直接傳送給融合中心,由於傳送功率會跟傳送端與接收端的距離成指數關係,為了減少傳送功\率的消耗,本篇論文探討感測器會透過多個中繼器轉傳,並且在感測器與中繼器我們是利用解碼-轉傳的方式。我們探討了如何傳送感測器與中繼器的解碼可靠度,以及每一級的可靠度如何結合,並且我們提出了一個當觀測目標經過渦輪碼編後其融合中心的融合規則。
Abstract
Wireless sensor network(WSN) is made up of a large number which are deployed in the environment to collect observations. Each sensor node preprocesses and extracts information from the raw observations. Each sensor node also has the ability to communicate with other sensor nodes or a fusion center via wireless channels.
Many aspects of WSNs have been investigated recently, such as efficient routing protocols, distributed data compression and transmission, and collaborative signal processing. We investigate the information processing task at the fusion center.
Radio transmission is one of the major power consumer, and the required transmission power not linear in distance between the transmitter and the receiver. Hence in this thesis, we consider a decision made at local sensor may need to go through multi- hop for minimal energy consumption. Sensor and relay employed decode and forward protocol. We investigate how to transmission reliability and how to combine the reliability and we proposed a fusion rule when observations are encoded by Turbo code.
目次 Table of Contents
目錄
誌謝................................................................................................................................ i
摘要................................................................................................................................ ii
Abstract ........................................................................................................................ iii
圖索引........................................................................................................................... vi
表索引............................................................................................................................ x
第一章 簡介.................................................................................................................. 1
第二章 渦輪碼.............................................................................................................. 3
2.1渦輪碼編碼器...................................................................................................... 3
2.2交錯器.................................................................................................................. 6
2.3渦輪碼解碼器.................................................................................................... 10
第三章 傳統的無線感測網路.................................................................................... 16
3.1傳統的無線感測網路系統模型........................................................................ 16
3.2融合中心的融合規則........................................................................................ 17
3.2.1 最佳概似比融合法則.................................................................................... 18
3.2.2 Chair-Varshney融合法則 .............................................................................. 18
3.2.3 最大比值法則................................................................................................ 19
3.2.4等增益法則..................................................................................................... 21
第四章 結合渦輪碼的多跳躍式無線感測網路........................................................ 22
4.1系統模型............................................................................................................ 22
4.2 感測器與中繼器傳送的機制........................................................................... 24
4.2.1 量化可靠度.................................................................................................... 25
4.2.2 傳送可靠度.................................................................................................... 46
4.3融合規則推導.................................................................................................... 47
第五章 系統模擬........................................................................................................ 50
5.1 量化區間對系統性能的影響........................................................................... 50
5.1.1 在雷利衰退通道下,量化區間對系統性能的影響................................ 50
5.2感測器與中繼器對系統性能的影響................................................................ 53
5.2.1感測器對系統效能的影響......................................................................... 53
5.2.2中繼器器對系統效能的影響..................................................................... 57
5.3 與傳統多跳躍式感測網路比較....................................................................... 62
第六章 結論................................................................................................................ 66
參考文獻...................................................................................................................... 67
參考文獻 References
[1] P. K. Varsheny, Distributed Detection and Data Fusion, New York: Springer-verlag, 1997
[2] Biao Chen, Ruixiang Jiang, Teerasit Kasetkasem, and Pramod K. Varshney,“Channel aware decision fusion in wireless sensor networks,”IEEE Trans. Signal Process., vol. 52, no.12, pp. 3454-3458, Dec.2004.
[3] Ruixiang Jiang and Biao Chen,“Fusion of censored decision in wireless sensor networks,”IEEE Trans. Wireless Commun., vol. 4, no.6, pp.2668-2673, Nov.2005.
[4] Ruixin Niu, Biao Chen and Pramod K. Varshney, “Fusion of decisions transmitted over Rayleigh fading Channels in wireless sensor networks,”IEEE Trans. Signal Process., vol 54, no.3, pp.1018-1027, Mar.2006.
[5] Ying Lin, Biao Chen and Pramod K. Varshney, “Decision fusion rules in multi-hop wireless sensor networks,”IEEE Trans. Aerosp. Electron. Syst., vol.41, no. 2, pp.475-488, Apr.2005.
[6] Claude Berrou, Alain Glavieux and Punya Thitimajshima,“Near Shannon limit error-correcting coding and decoding:turbo code,”in Proc. ICC‘93, pp.1064-1070, May.1993.
[7] Claude Berrou and Alain Glavieux,“Near optimum error correcting coding and decoding:Turbo codes,”IEEE Trans. Commun., vol. 44, no.10, pp.1261-1271, Oct.1996.
[8] B. Vucetic, Turbo Code: principles and application. Boston: Kluwer Academic publishers, 2000.
[9] 3GPP TS 25.212 v7.4.0,“Multiplexing and channel coding(FDD),”March 2007.
68
[10] Z. Chair and P. K. Varshney.“Optimal data fusion in multiple sensor detection systems,”IEEE Trans. Aerosp. Electron. Syst., vol. AES-22, pp. 98-101, Jan.1986.
[11] G. L. Stuber, Principles of mobile communication, 2nd ed., Boston:Kluwer, 2001
電子全文 Fulltext
本電子全文僅授權使用者為學術研究之目的,進行個人非營利性質之檢索、閱讀、列印。請遵守中華民國著作權法之相關規定,切勿任意重製、散佈、改作、轉貼、播送,以免觸法。
論文使用權限 Thesis access permission:校內校外均不公開 not available
開放時間 Available:
校內 Campus:永不公開 not available
校外 Off-campus:永不公開 not available

您的 IP(校外) 位址是 52.91.84.219
論文開放下載的時間是 校外不公開

Your IP address is 52.91.84.219
This thesis will be available to you on Indicate off-campus access is not available.

紙本論文 Printed copies
紙本論文的公開資訊在102學年度以後相對較為完整。如果需要查詢101學年度以前的紙本論文公開資訊,請聯繫圖資處紙本論文服務櫃台。如有不便之處敬請見諒。
開放時間 available 已公開 available

QR Code