跳到主要內容

臺灣博碩士論文加值系統

(100.26.196.222) 您好!臺灣時間:2024/03/01 06:23
字體大小: 字級放大   字級縮小   預設字形  
回查詢結果 :::

詳目顯示

我願授權國圖
: 
twitterline
研究生:黃鈺婷
研究生(外文):Yu-Ting Huang
論文名稱:IEEE802.11a無線區域網路傳送端設計
論文名稱(外文):IEEE 802.11a WLAN Transmitter Design
指導教授:張振豪
指導教授(外文):Robert C. Chang
學位類別:碩士
校院名稱:國立中興大學
系所名稱:電機工程學系
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:英文
論文頁數:78
中文關鍵詞:無線區域網路昇餘弦濾波器
外文關鍵詞:WLANraised cosine filter
相關次數:
  • 被引用被引用:1
  • 點閱點閱:254
  • 評分評分:
  • 下載下載:0
  • 收藏至我的研究室書目清單書目收藏:0
隨著通訊技術的進步,提供高速傳輸服務之無線通訊系統成為重要研究之一。在這篇論文中,首先在MATLAB的環境下模擬基頻傳送端之功能驗證,傳送端之各方塊均符合standard之規範。
有限脈衝響應(FIR)濾波器常被應用在信號處理及頻譜分析上。所以數位濾波器扮演著重要的角色。本論文中,我們實作應用於無線區域網路中IEEE 802.11a符合Nyquist條件的上升餘弦濾波器。這個濾波器是一個典型依係數塑型的有限脈衝響應濾波器。我們基於系統操作在20MHz之下比較了幾個不同的架構,如直接式、摺疊式(對稱式)、CSD。使用ASIC的設計流程來模擬及驗證,在UMC0.18μm技術下,工作電壓為1.8V,其硬體結果顯示本設計能符合IEEE 802.11a 的標準。
The development of wireless communication systems for high data-rate transmission has become one of important researches. In this thesis, design of the baseband transmitter is simulated and verified in MATLAB environment. The result shows that functional blocks of the transmitter can meet the standard specifications.
FIR filters are often used in signal processing and spectral analysis. The digital FIR filter plays an important role. In the thesis, a Nyquist digital filter, i.e., a raised cosine filter, for IEEE 802.11a of WLAN BBP will be implemented. The shaping filter is a typical FIR Filter whose passband shape is set by the tap coefficients. Based on 20MHz system operation, the FIR filters are compared with different architectures, such as direct form, folded direct form(symmetric), and Canonical Signed Digit. We use ASIC design flow to do hardware simulation and verification. The filters are implemented by using UMC0.18μm CMOS technology and the supply voltage is 1.8V. The results show that the implemented raised cosine filter can meet IEEE 802.11a standard.
Chapter 1 Introduction
1.1 Motivation
1.2 OFDM Technology
1.2.1 Guard interval and Cyclic Prefix
1.2.2 OFDM Advantage and Drawback
1.3 Organization of the Thesis
Chapter 2 Overview of IEEE 802.11a Wireless LAN
2.1 Background Information
2.2 The Format of the Transmitter Packet
2.3 Timing Related Parameters
2.4 Function Descriptions of Transmitter
2.4.1 Scrambling
2.4.2 Convolutional Coding
2.4.3 Interleaving
2.4.4 Modulation Mapping
2.4.5 Pilot Subcarriers and IFFT
2.4.6 Windowing and Transmitter Spectrum Mask
2.5 SUMARY
Chapter 3 Digital Shaping Filter
3.1 Introduction
3.1.1 Types of Digital Filter
3.1.2 Digital Filter Design
3.2 Pulse Shaping
3.2.1 The rectangular pulse
3.2.2 Raised Cosine Filters
3.2.3 Square-Root Raised Cosine Filters
3.3 FIR Filter Structures
3.3.1 Direct Form
3.3.2 Transpose-Direct Form
3.3.3 Folded Direct Form (FDF) Structure
3.4 Canonical Signed Digit (CSD)
Chapter 4 Simulation and Filter Implementation
4.1 Software Simulation
4.1.1 Signal Field Bit Assign
4.1.2 Generating the DATA bits
4.2 Digital IC Design Flow
4.3 FIR Shaping Filter
4.4 FIR Filter Hardware Implementation
4.4.1 Direct Form
4.4.2 Direct Form Used Partial Sum Multiplier
4.4.3 Folded direct form (FDF)
4.4.4 CSD
Chapter 5 Conclusion
Reference
[1] J. A. C. Bingham, “Multicarrier modulation for data transmission: An idea whose time has come,” IEEE Commun. Mag., vol. 28, pp. 5—14, May 1990.
[2] John Terry and Juha Heiskala, OFDM Wireless LANs: A Theoretical Guide. Sams, 2002.
[3] R.Van Nee and R. Prasad, “OFDM Wireless Multimedia Communications,” Artech House, Boston, 2000.
[4] IEEE 802.11, IEEE Standard for Wireless LAN Medium Access Control and Physical Layer Specifications, Nov. 1999.
[5] E. Fotopoulou, V. Paliouras, T. Stouraitis, T.,” A computational technique and a VLSI architecture for digital pulse shaping in OFDM modems,” IEEE Int’l Symposium on Circuits and Systems, Vol. 2, 25-28, May 2003.
[6] N.S. Alagha, P. Kabal,” Generalized raised-cosine filters,” IEEE Transactions on Communications, Vol. 47, pp. 989 - 997, July 1999.
[7] I-Hsien Lee, Algorithm-Level Impairment Compensation Techniques for Finite-Precision Multilper-less Digital Filters, M.S. Thesis, National Central University, 2000.
[8] Simon Haykin, Communication System, John Wiley & Sons, New York, 2000.
[9] Charlie Evans and Jeff Fox, New IP Evaluation Model Reduces Risk, Speeds FIR Filter Design Time for Communications Test Equipmen, http://chip123.eecs.stut.edu.tw/.
[10] W.P. Somerset, B.M. Al-Hashimi, M. Moniri, ” A computer program for the design and analysis of linear phase FIR raised cosine filters”, IEEE Int’l Symposium Circuits and Systems, Vol. 2, pp. 18-21, Aug 1996.
[11] Ken Gentile, ”The care and feeding of digital , pulse-shaping filters,” RF mixed signal, pp50-61, April 2002.
[12] Andy Bateman, Digital Communication, Addison Wesley Longman, 1999.
[13] P.S Rha, S. Hsu,” Peak-to-average ratio (PAR) reduction by pulse shaping using a new family of generalized raised cosine filters”, Vehicular Technology Conference, Vol. 1, pp.706-710, Oct. 2003.
[14] Taylor and J. Fred, Digital Filter Design Handbook, New York: Marcel Dekker, 1983.
[15] Wen-Yu Lv, Implementation of Shaping Filter for IEEE 802.11b Transmitter, M.S. Thesis, National Chung-Hsing University, 2002.
[16] I-Hsien Lee, Cheng-Shing Wu, An-Yeu Wu, ”Cost-efficient multiplier-less FIR filter structure based on modified DECOR transformation”, IEEE International Conference on Acoustics, Speech, and Signal Processing, Vol. 2 , pp. 1065 — 1068, May 2001.
[17] Shaw-Ping Lu, Using Common Sub-expression Elimination for Reducing Hardware in FIR Filters Design, M.S. Thesis, Chung Yuan Christian University, 2002.
[18] Taylor and J. Fred, Digital Filter Design Handbook, New York: Marcel Dekker, 1983.
QRCODE
 
 
 
 
 
                                                                                                                                                                                                                                                                                                                                                                                                               
第一頁 上一頁 下一頁 最後一頁 top