IEEE 802.16-2004 WiMAX 接收機基頻晶片設計與整合

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研究生：	張志頡 Chi-chie Chang
論文名稱：	IEEE 802.16-2004 WiMAX 接收機基頻晶片設計與整合 IEEE 802.16-2004 Fixed WiMAX Rx Baseband Chip Design and Integration
指導教授：	吳仁銘 Jen-ming Wu
口試委員:
學位類別：	碩士 Master
系所名稱：	電機資訊學院 - 通訊工程研究所 Communications Engineering
論文出版年：	2006
畢業學年度：	94
語文別：	中文
論文頁數：	66
中文關鍵詞：	都會型無線區域網路
外文關鍵詞：	WiMAX
相關次數：	點閱：3 下載：0
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有別於一般單一載波通訊系統，都會型無線區域網路（IEEE 802.16-2004）使用正交分頻多工（OFDM）技術，擁有良好的頻寬使用率、寬廣的服務範圍、符元間干擾較小以及可利快速傳立葉轉換來實現多重載波調變…等等各項優點。在目前都會型無線區域網路標準下，使用256點快速傅利葉轉換，2.5~3.5G的載波頻率，頻寬最大為20MHz，其資料傳輸速率最高可達75Ｍbps，服務範圍最遠可達5英哩。高速的傳輸送率及寬廣服務範圍使得都會型無線區域網路成為當紅的新一代無線通訊存取技術。
在本篇論文裡，我們在一開始對都會型無線區域網路的發展和基本傳輸訊號架構、各項協定作了簡單的介紹；第三章開始，介紹了都會型無線區域網路接收機的演算法架構，包括各種訊號同步技術（STO、CFO以及封包偵測），之後利用硬體描述語言（RTL）實現了都會型無線區域網路接收機基本架構，包含低功率的封包偵測、訊號同步、載波頻率偏移補償，以及小面積的遞回式快速傅利葉轉換。在封包偵測和訊號同步方面，我們利用單一位元技術，大大地簡化了內部運算量，並利用一些對應函式簡化部分乘法器架構。在快速傅利葉轉換部分，利用遞回式快速傅利葉轉換達到節省面積、降低消耗功率之目的。最後，我們將都會型無線區域網路接收機晶片實作出來，在本論文的最後部分及可見到晶片佈局圖和佈局後驗證結果。

In this thesis, we implement the basic structure of WiMAX receiver and verify it with post layout simulation. In our chip design, it consists of low power packet detection, carrier frequency compensation and recursive FFT. In the packet detection and carrier frequency compensation, we propose the mapping function to achieve low power design. In the FFT design, we use the radix 8 recursive FFT to achieve small area design. Finally, we can see this WiMAX chip layout view and some verification.

Contents    i
List of Figures    iii
List of Tables    v
Abstract    vi
Chapter 1    1
Introduction    1
1.    WiMAX    2
2.    History of IEEE 802.16    2
Chapter 2    4
OFDM and IEEE 802.16-2004    4
1.    Overview of OFDM    4
1.1.    OFDM Introduction    4
1.2.    Advantages of OFDM Scheme    4
1.3.    Concept of OFDM    6
2.    Overview of IEEE 802.16-2004 WirelessMAN-OFDM PHY    9
2.1.    Introduction    9
2.2.    OFDM Symbol Description    9
2.3.    OFDM Symbol Parameters    11
3.    Channel Coding    13
3.1.    Randomization    13
3.2.    FEC    14
3.3.    Interleaving    14
4.    Modulation    15
4.1.    Data Modulation    15
4.2.    Pilot Modulation    16
5.    Preamble Structure and Modulation    17
Chapter 3    19
Fundamental Algorithm of WiMAX Receiver    19
1.    Algorithm of Packet Detection    19
1.1.    Concept of Packet Detection    19
1.2.    The Structure of Preamble in Time Domain    20
1.3.    Delay and Correlate for Packet Detection    21
2.    Algorithm of Carrier Frequency Offset    22
2.1.    Concept of Carrier Frequency Offset    22
2.2.    Carrier Frequency Offset Compensation Algorithm    24
2.3.    Angle calculation of complex number    26
3.    Algorithm of Symbol Timing Synchronization    32
3.1.    Concept of Symbol Timing    32
3.2.    Symbol Timing Synchronization Algorithm    33
4.    Algorithm of FFT    35
4.1.    Concept of FFT    35
4.2.    256 Point Recursive FFT Algorithm    38
Chapter 4    39
Implementation Architecture of WiMAX Receiver    39
1.    System Block Diagram    39
2.    Architecture of Packet Detection and CFO Estimator    40
2.1.    Packet Detection and CFO Estimator Block Diagram    40
2.2.    Complex multiply Mapper in Packet Detection    41
2.3.    Sliding Mapper in Packet Detection    42
2.4.    The Detector in Packet Detection    43
2.5.    Architecture of CFO Compensation Unit (CFCU)    44
2.6.    Architecture of CORDIC    45
3.    Architecture of Symbol Timing    46
4.    Architecture of FFT    48
Chapter 5    50
Simulation Results and Chip Design    50
1.    Simulation Results    50
1.1.    Simulations Result for Packet Detection    50
1.2.    Simulation Results for Carrier Frequency Offset    52
1.3.    RTL Simulation Results for full system    54
2.    Chip Design    56
2.1.    Overall Architecture    56
2.2.    Interface Signals    57
2.3.    Design Flow    58
2.4.    Post Layout Simulation    58
2.5.    DRC and LVS report    58
2.6.    Chip Specification List    61
2.7.    Chip Layout View    62
Chapter 6    65
Conclusion    65
Biography    66

                                

[1] IEEE Std 802.16□-2004 (Revision of IEEE Std 802.16-2001), “IEEE Standard for Local and metropolitan area networks”, 3 Park Avenue, New York, NY 10016-5997, USA.

[2] J. Terry, and J. Heiskala, “OFDM Wireless LANs: A Theoretical and Practical Guide”, SAMS Publishing, 2001.

[3] Gordon L. Stuber, “Principles of Mobile Communication,” 2nd edition, Kluwer Academic Publishers, 2002.

[4] Chi-hong Su, Jen-ming Wu, “Implementation of OFDM Processing and Synchronization for WiMax Receiver”, TsingHua National University, 2005.

[5] Chun-hung Chou, Jen-ming Wu, "Baseband Timing Synchronization Circuit Design for WiMAX Systems,” TsingHua National University, 28, July, 2005.

[6] Ching-chi Chang, Chorng-kuang Wang, “High Speed Pilot-less Sampling Frequency Acquisition for OFDM Systems”, National Taiwan University, 2005.

[7] Aifeng Ren, Qinye Yin, Yinkuo Meng, “Carrier Frequency Offset Estimation for OFDM Systems”, Communications, IEEE Transaction on, May 2006

[8] Maja Sliskovic, “Carrier and Sampling Frequency Offset Estimation and Correction in Multicarrier Systems”, 2001. GLOBECOM’01.IEEE,

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