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博碩士論文 etd-0805109-124749 詳細資訊
Title page for etd-0805109-124749
論文名稱
Title
IEEE 802.15.4-2006中868MHz振幅移鍵調變模式之 基頻訊號處理
The Baseband Signal Processing for 868MHz ASK Mode of the IEEE 802.15.4-2006 Low Rate-Wireless Personal Area Network
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
49
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
2009-07-27
繳交日期
Date of Submission
2009-08-05
關鍵字
Keywords
IEEE 802.15.4
baseband signal processing, LR-WPAN, IEEE 802.15.4
統計
Statistics
本論文已被瀏覽 5641 次,被下載 2415
The thesis/dissertation has been browsed 5641 times, has been downloaded 2415 times.
中文摘要
近年來,由於無線通訊技術的蓬勃發展為人們生活帶來相當多的便利之處。現今,吾人可在諸多場合中見到無線通訊的應用,諸如家庭監控、智慧型裝置、自動化系統…等等。然而,為了因應更低成本、低功率的通訊需求,研究人員們花了許\多年時間發展出IEEE 802.15.4此一低速率無線近身網路標準,期使能廣泛應用於各處。

在本論文中,吾人將著重於IEEE 802.15.4低速率無線近身網路之實體層中868/915模式的基頻訊號處理。其中包含了封包偵測、取樣點偵測(能量偵測)、載波頻率偏移(Carrier Frequency Offset, CFO)補償、載波相位偏移(Carrier Phase Offset, CPO)補償,以及解展頻演算法設計。於模擬的過程中,吾人將檢測所設計的演算法是否合於標準所訂定的接收機靈敏度、封包格式以及調變方法。一旦所設定的演算法達到標準之後,則開始著手進行量化模擬測試,以待後續以硬體描述語言(Verilog Hardware Description Language, VHDL)來做硬體實現與驗証。
Abstract
In recent years, the worldwide progress of wireless communication technology has bringing great benefit and convenience to our people’s life. Nowadays, people can use appliances of wireless communication in many fields, such as family-monitoring, automatic system, and smart-type device…etc. However, in order to dealing with the need of low cost and low power communication, the researcher spend many years on developing the specification of IEEE 802.15.4 Low Rate-Wireless Personal Area Network (LR-WPAN) expected be applied in widespread use.

In this thesis, we focus on the baseband signal processing for the physical layer specification of the 868/915MHz mode of the IEEE 802.15.4 LR-WPAN. Our design blocks include packet detection, sampling point detection (energy detection), carrier frequency offset (CFO) compensation, carrier phase offset (CPO) compensation, and despreading algorithms. During the process of simulation, we’ll examine whether our design match the criteria of standard such as sensitivity, packet format, and modulation. While our designs achieve the requirement of the standard, we start on quantization. Finally, we’ll realize the algorithm in VHDL and examine it.
目次 Table of Contents
第一章 導論................................................................................................ 1
1.1 背景與研究動機................................................................................................ 1
1.2 論文架構簡述................................................................................................ 3
第二章 IEEE 802.15.4 868/915MHz band實體層標準 .................................................... 4
2.1 實體層介紹........................................................................................................ 4
2.2 868/915MHz頻帶實體層標準 .......................................................................... 5
2.2.1 PPDU格式 .............................................................................................. 5
2.2.2 前導符元區塊......................................................................................... 7
2.2.3 訊框起始符元區塊................................................................................. 7
2.2.4 通道規劃................................................................................................. 7
2.2.5 資料率..................................................................................................... 8
2.2.6 調變與展頻方式..................................................................................... 9
2.2.6.1 位元至符碼對應.................................................................................. 9
2.2.6.2 符碼至子碼對應................................................................................ 10
2.2.6.3 平行序列展頻編碼範例.................................................................... 12
2.2.7 脈波整形............................................................................................... 14
2.2.8 子碼傳送順序....................................................................................... 15
2.2.9 靈敏度................................................................................................... 15
第三章IEEE 802.15.4 868MHz band演算法設計......................................................... 17
3.1 傳收器架構圖.................................................................................................. 17
3.2 無線通道與系統模擬...................................................................................... 18
3.3 接收機演算法.................................................................................................. 21
3.3.1 封包偵測................................................................................................. 21
3.3.2 匹配濾波器............................................................................................. 23
3.3.3 頻率偏移估測......................................................................................... 23
3.3.3.1 取樣點間的頻率偏移估測.................................................................. 24
3.3.3.2 子碼間的頻率偏移估測...................................................................... 25
3.3.3.3 符碼間的頻率偏移估測...................................................................... 27
3.3.4 能量偵測................................................................................................. 29
3.3.5 取樣與解展頻方法................................................................................. 30
3.3.6 剩餘載波頻率偏移補償與初始相位校正............................................. 32
3.3.7 時間同步與初始相角............................................................................. 34
3.3.8 系統模擬結果......................................................................................... 36
第四章 結論..................................................................................................................... 37
中英對照表....................................................................................................................... 38
全名縮寫對照表............................................................................................................... 40
參考文獻........................................................................................................................... 42
參考文獻 References
[1] IEEE Part 15.4: Wireless Medium Access Control (MAC) and Physical Layer (PHY) Specifications for Low-Rate Wireless Personal Area Networks (WPANs), IEEE Std. 802.15.4-2006, Sep. 2006.
[2] IEEE Part 15.1: Wireless medium access control (MAC) and physical layer (PHY) specifications for wireless personal area networks (WPANs), IEEE Std. 802.15.1-2005, Jun. 2005.
[3] IEEE Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications: High-Speed Physical Layer in the 5 GHz Band, IEEE Std. 802.11a-1999, Sep. 1999.
[4] IEEE Standard for Local and Metropolitan Area Networks, IEEE Std. 802.16-2004, Oct. 2004.
[5] Y. Xiao and M. Guizani, “IEEE 802.20: Mobile broadband wireless access,” IEEE Wireless Communications Magazine, pp. 84-95, Feb. 2007.
[6] L. Dan, K. D. Wong, H. H. Yu, and A. M. Sayeed, “Detection, classification, and tracking of targets,” IEEE Signal Processing Magazine, vol. 19, pp. 17-29, Mar. 2002.
[7] B. Chen, R. Jiang, T. Kasetkasem, and P. K. Varshney, “Channel aware decision fusion in wireless sensor networks,” IEEE Transactions on Signal Processing, vol. 52, no. 12, pp. 3454-3458, Dec. 2004.
[8] Y. Yuan and M. Kam, “Distributed decision fusion with a random-access channel for sensor network applications,” IEEE Transactions on Instrumentation and Measurement, vol. 53, no. 4, pp. 1339-1344, Aug. 2004.
[9] J. F. Chamberland and V. V. Veeravalli, “Asymptotic results for decentralized detection in power constrained wireless sensor networks,” IEEE Journal of Selected Areas in Communications, vol. 22, no. 6, pp. 1007-1015, Aug. 2004.
[10] C. Joseph, M. McFarland, and K. Muralidhar, “Integrated management for OSI
networks,” in Proc. IEEE Global Communications Conference, Dec. 1990, vol. 1, pp. 565-571.
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