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研究生:朱朝成
論文名稱:無線區域網路之CCK調變/解調器與等化器設計與實現
論文名稱(外文):Design and implementation of CCK modulator/demodulator and equalizer for a wireless LAN system
指導教授:余兆棠余兆棠引用關係唐經洲
學位類別:碩士
校院名稱:南台科技大學
系所名稱:電子工程系
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2004
畢業學年度:92
語文別:中文
論文頁數:71
中文關鍵詞:CCK等化器
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本論文使用一個較簡單的硬體架構設計與實現一可應用於IEEE 802.11 (b/g)無線區域網路的CCK調變/解調器以及等化器,完成之CCK調變/解調器比傳統解調器有較佳的檢測效能,利用一特殊乘法器的架構使完成之等化器的硬體面積與功率消耗小。設計過程中首先使用MATLAB軟體撰寫程式完成CCK調變/解調器以及等化器之功能模擬,經由硬體描述語言(Verilog HDL)完成其硬體電路的設計與模擬,並以數位IC製作流程(Cell-base)完成CCK調變/解調器以及等化器晶片設計,最後也使用FPGA實現硬體電路加以驗證所完成晶片之功能。
第一章 緒論 1
1.1 前言 1
1.2 研究動機與目的 2
1.3 論文結構 3
第二章 無線區域網路 4
2.1 IEEE802.11xWLAN系統簡介 4
2.2 訊框格式 6
2.3 攪拌器 9
2.4 調變技術 10
2.4.1 差分二相位移鍵(DBPSK) 11
2.4.2 差分四相位移鍵(DQPSK) 12
2.4.3 互補碼(CCK)調變 14
2.5 展頻技術 15
2.6 發射端基頻架構 18
2.7 接收端基頻架構 19
第三章 互補碼 21
3.1 互補碼簡介 21
3.1.1 MBOK調變 21
3.1.2 互補碼調變 23
3.2 互補碼的傳送流程 24
3.3 互補碼的接收與解調變 27
3.4 快速華許解調變架構 30
3.5 相位偵測器解調 34
第四章 決策迴授等化器 39
4.1 符號間干擾: 40
4.2 等化器(equalizer)架構: 41
4.2.1 線性橫向等化器(Linear Transversal Equalizer;LTE) 43
4.2.2 非線性橫向等化器(Non-Linear Transversal Equalizer;NLTE) 44
4.3 最小均方演算法(Least Mean Square Algorithms;LMS) 45
4.4 決策迴授等化器(Decision Feedback Equalizer:DFE) 47
4.4.1 順向濾波器 49
4.4.2 迴授濾波器 49
第五章互補碼調變/解調器與等化器晶片設計 51
5.1 設計程序 51
5.2 決策迴授等化器的設計說明 52
5.2.1 濾波器(Filter) 53
5.2.2 係數更新(Coefficient Update part) 54
5.2.3 判別器(Detector) 54
5.2.4 VLSI設計: 57
5.3 互補碼的設計說明 57
5.4 系統模擬驗證與電路實現: 60
第六章 結論 68
參考文獻: 69
[1] “IEEE Std 802.11b-1999,” Institute of Electrical and Electronics Engineers, Inc., 16 September 1999 Pages: i - 90.
[2] S. Haykin, Adaptive Filter Theory, 3rd Ed, New Jersey: Perentice-Hall, 1996.
[3] S. Haykin, Communication Systems, John Wiley&Sons, Inc., 1982.
[4] “IEEE Std802.11g-2003,” Institute of Electrical and Electronics Engineers, Inc., 12 June 2003 Pages: i - 67.
[5] “ANSI/IEEE Std 802.11,” Institute of Electrical and Electronics Engineers, Inc., 1999.
[6] “HFA3860B Data Sheet,” Intersil Corporation, July 1999.
[7] Carl Andren and Mark Webster, “CCK Modulation Delivers 11Mbps for High Rate IEEE 802.11 Extension,” Proceedings of Wireless Symposium/Portable by Design Conference, spring 1999 Pages: i - 77.
[8] 黃志豪, “A flexible design of a decision feedback equalizer and a novel CCK technique for wireless LAN systems,” Master thesis, Dept. of Electrical Engineering, National Chung Hsing University, June 2002.
[9] Tae-Ho Kim, Chang-Kon Kim, Jong-Wha Chong, “A new architecture of CCK modem based on iterative differential-modulation and phase-detection,” Proceedings of The 8th IEEE International Conference on Electronics, Circuits and Systems, Vol. 1, pp. 2-5 Sept. 2001.
[10] Ya-Ju Yu, “Equalizer Design for Wireless Communication,” Master thesis, Dept. of Electrical Engineering, National Chiao Tung University, June 2001.
[11] Wei-Cheng Chu, “ASIC Design of Wireless Channel Emulator and Adaptive LMS Equalizer,” Master thesis, Dept. of Electrical Engineering, National Tsing Hua University, June 2000.
[12] Hsin-Lei Lin, Chang, R.C., Chih-Hao Huang and Hongchin Lin, “A flexible design of a decision feedback equalizer and a novel CCK technique for wireless LAN systems,” Proceedings of the 2003 International Symposium on Circuits and Systems, Vol. 2, pp. 25-28 May 2003.
[13] H. Choo, K. Muhammad and K. Roy, “Two''s complement computation sharing multiplier and its applications to high performance DFE,” IEEE Transactions on ASSP, Vol. 51, No.2, Feb. 2003.
[14] Jake Gunther, lab5 of Communication Systems : Basic digital modulation and the sampling receiver, Class Homepage - Fall 2002.
http://www.engineering.usu.edu/classes/ece/4660/lab5/lab5.html
[15] 莊登凱, “Design and Implementation of a Baseband Processor for High Speed Wireless LAN application,” Master thesis, Dept. of Electrical Engineering, National Taiwan University, June 1999.
[16] Shu-Mei Li, “Design and Implementation of CCK8 Modulation Baseband Processor for High Speed Wireless LAN,” Master thesis, Dept. of Electrical Engineering, National Taiwan University, June 2000.
[17] Yung-Chuan Lin, “The System Design and Firmware Implementation on Physical Layer of IEEE 802.11b Wireless LAN,” Master thesis, Dept. of Electrical Engineering, National Cheng Kung University, June 2000.
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