請用此 Handle URI 來引用此文件:
http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/40544
完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 闕志達(Tzi-Dar Chiueh) | |
dc.contributor.author | Charlie Hsiao | en |
dc.contributor.author | 蕭詩聰 | zh_TW |
dc.date.accessioned | 2021-06-14T16:50:49Z | - |
dc.date.available | 2010-08-06 | |
dc.date.copyright | 2008-08-06 | |
dc.date.issued | 2008 | |
dc.date.submitted | 2008-07-29 | |
dc.identifier.citation | [1] International Telecommunications Union, ITU Internet Reports 2003: Birth of Broadband, International Telecommunications Union, Sep. 2003.
[2] Mosche Carmel, Complete Wireless Broadband Portfolio, Alvarion. http://www.dainfo.com/img/upload/2/224_399_Alvarion.ppt [3] Z. Y. Ding, Baseband Receiver Design for Next-Generation High-Throughput Wireless LAN with MIMO-OFDM technology, Master Thesis, Graduate Institude of Electronics Engineering, National Taiwan University, Taipei, Taiwan, 2005. [4] R. Bera, B. Paul, A. Guchhait, S. Sil, N.B. Sinha, and S. Dogra, “Wireless Embedded System for Multimedia Campus Network Utilizing IEEE 802.11 N (draft) and WiMax Radio,” in Proc. IFIP International Conference on Wireless and Optical Communications Networks, July 2007, pp. 1-5. [5] Kun-Chien Hung and David W. Lin, “Optimal Delay Estimation for Phase-Rotated Linearly Interpolative Channel Estimation in OFDM and OFDMA Systems,” IEEE Signal Processing Letters,Vol. 15, pp. 349-352, April 2008. [6] Man Cheuk Ng, Muralidaran Vijayaraghavan, Nirav Dave, Gopal Raghavan, and Jamey Hicks, “FromWiFi toWiMAX: Techniques for High-Level IP Reuse across Different OFDM Protocols,” in Proc. IEEE/ACM International Conference on Formal Methods and Models for Codesign, June 2007, pp. 71-80. [7] J. G. Proakis, Digital Communications, McGraw-Hill Publisher, 2001. [8] G. J. Foschini and M. J. Gans, “On the limits of Wireless Communication in a Fading Environment When Using Multiple Antennas,” in Proc. Wireless Pers. Commun., Mar. 1998, pp. 315-335. [9] A. Paulraj, R. Nabar and D. Core, Introduction to Space-Time Wireless Communications, Cambridge University Press, 2003. [10] B. Vucetic and J. Yuan, Space–Time Coding, Wiley, 2003. [11] J. P. Lien, Design of a MIMO OFDM Baseband Transceiver for Cognitive Radio System, Master thsis, Graduate Institude of Electronics Engineering, National Taiwan University, Taipei, Taiwan, 2005. [12] TGn Channel Model: IEEE 802.11-03-0940-04-000n. http://www.nari.ee.ethz.ch/~dsbaum/11-03-0940-04-000n-tgn-channel-models.pdf [13] A.A.M. Saleh and R.A. Valenzuela, “A statistical model for indoor multipath propagation,” IEEE J. Select. Areas Commun., Vol. 5, pp. 128‐137, Feb. 1987. [14] P. Dent , G.E. Bottomley, and T. Croft, “Jakes Fading Model Revisited,” IEEE Electron. Lett., Vol. 29, pp. 1162-1163, Jun. 1993. [15] Xiangwei Zhou, Zhaoyang Zhang, and Peng Cheng, “A Practical Cluster-Based Channel Estimation Method for IEEE 802.16e,” in Proc. International Conference on Signal Processing, Vol. 3, pp. 16-20, Aug. 2006 [16] Richard van Nee and Ramjee Prasad, OFDM for Wireless Multimedia Communications, UK: Artech House, 2000 [17] P. Duhamel and H. Hollmann, “Split-radix FFT algorithm,” Electronic Letters, Vol. 20, pp.14-16, Jan. 1984 [18] Pei-Yun Tsai, Hsin-Yu Kang, and Tzi-Dar Chiueh,“Joint weighted least squares estimation of frequency and timing offset for OFDM systems over fading channels,” in Proc. IEEE Vehicular Technology Conference, vol. 4, pp. 2543–2547, April 2003. [19] Hsin-Yu Kang, Design and implementation of an MC-CDMA Baseband Transceiver, Master Thesis, Graduate Institude of Electronics Engineering, National Taiwan University, Taipei, Taiwan, Jun. 2003 [20] V.Fischer, A. Kurpriers, and D. Karsunke, “ICI Reduction Method for OFDM Systems,” IEEE Radio and Wireless Symposium, Jan. 2006, pp. 23-26. [21] Jian Fu, Chang-Yong Pan, Zhi-Xing Yang, and Lin Yang, “Low-Complexity Equalization for TDS-OFDM Systems Over Doubly Selective Channels,” IEEE Transactions on Broadcasting, Vol.51, pp. 401-407, Sep. 2005. [22] Shaoping Chen, and Tianren Yao, “Intercarrier Interference Suppression and Channel Estimation for OFDM Systems in Time-varying Frequency-selective Fading Channels,” IEEE Transactions on Consumer Electronics, Vol.50, pp. 429-435, May 2004. [23] R. Michael Buehrer, Sridhar Arunachalam, Kam H. Wu, and Andrea Tonello, “Spatial Channel Model and Measurements for IMT-2000 Systems,” in Proc. IEEE VTC. Vol. 1, pp. 342-346, May 2001. [24] F. Wang, A. Ghosh, R. Love, K. Stewart, R. Rapeepat, R. Bachu, Y. Sun, and Q. Zhao, “IEEE 802.16e System Performance: Analysis and Simulations,” in Proc. IEEE Symposium on Personal, Indoor and Mobile Radio Communications, Vol.2, pp.900-904, Sep. 2005. [25] Yasamin Mostofi, and Donald C. Cox, “ICI Mitigation for Pilot-Aided OFDM Mobile Systems,” IEEE Transactions on Wireless Communications, Vol.4, pp. 765-774, March 2005. [26] Y. C. Lei, Construction of a Baseband Receiver for IEEE 802.16 OFDM Mode Subscriber Station, Master Thesis, Dept. of Electrical Engineering, National Taiwan University, Taipei, Taiwan, July 2005. [27] IEEE Std 802.16-2004, Standard for Local and Metropolitan Area Networks Part 16: Air Interface For Fixed and Mobile Broadband Wireless Access Systems, IEEE, 2004. [28] IEEE Std 802.16e-2005, Standard for Local and Metropolitan Area Networks Amendment2: Physical and Medium Access Control Layers for Combined Fixed and Mobile Operation in Licensed Bands, IEEE, 2005. [29] K. C. Chang, Design and Implementation of a Baseband Receiver for IEEE 802.16e-2005 OFDMA Mode Mobile Station, Master Thesis, Dept. of Electrical Engineering, National Taiwan University, Taipei, Taiwan, 2007. [30] P.A.Murugesa Pandian' and S.Srikanth, “Low Complexity Cell Search For Mobile OFDMA System,” in Proc. International Conference on Signal Processing, Communications and Networking , Jan. 2008, pp. 189-193. [31] Peng Cheng, Zhaoyang Zhang, Xiangwei Zhou, Jing Li, and Peiliang Qiu, “A Study on Cell Search Algorithms for IEEE 802.16e OFDMA Systems,” in Proc. IEEE Wireless Communications and Networking Conference, March 2007, pp. 1848 – 1853. [32] Huan Su, Jianhua Zhang and Ping Zhang, “A Preamble-based Cell Search Scheme for OFDMA Cellular Systems,” in Proc. International Conference on Networking, International Conference on Systems and International Conference on Mobile Communications and Learning Technologies, April 2006, pp. 197-197. [33] Dusit Niyato and Ekram Hossain, “WIRELESS BROADBAND ACCESS: WIMAX AND BEYOND - Integration of WiMAX and WiFi: Optimal Pricing for Bandwidth Sharing,“ IEEE Communications Magazine ,Vol. 45, pp. 140-146, May 2007. [34] Alessandro Tomasoni, Edoardo Gallizio, and Sandro Bellini, “Low Complexity and Low Latency Training Assisted Channel Estimation for MIMO-OFDM systems,” in Proc. IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, Sep. 2007, pp. 1-5. [35] David W. Chi, Mishal Al-Gharabally and Pankaj Das, “PHY 33-3 - Effects of Channel Estimation Error and Nonlinear HPA on the Performance of OFDM in Rayleigh Channels with Application to 802.11n WLAN,” in Proc. IEEE Wireless Communications and Networking Conference, April 2008, pp. 852-857. [36] Jaekyun Moon and Hui Jin and Taehyun Jeon and Sok-Kyu Lee, “Channel Estimation for MIMO-OFDM Systems Employing Spatial Multiplexing,” in Proc. IEEE Vehicular Technology Conference, Vol. 5, pp. 3649-3654, Sep. 2004. | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/40544 | - |
dc.description.abstract | 由於現代人對於網路的依賴,漫遊變得格外重要。因此無線雙模將可以擴展網路所能包含的面積。無線雙模支援了802.16e以及802.11n,這代表著使用者將可以在室內及室外不斷線的持續上網。
本篇論文的重點就是提出一個雙模的2x2 MIMO-OFDM / OFDMA基頻實體層接收機,此雙模接收機可操作在靜態及動態通道環境。此接收機是依據 EWC HT PHY V1.27 以及 IEEE 802.16e-2005 的功能要求,提出了實體層的OFDM / OFDMA參數以及速度參數。傳送機、通道模型是以軟體形式撰寫,而接收機是以軟體來模擬硬體,接收機的部份則更進一步的用定點數來實現。接收機的主要架構分為同步、反調變、以及等化。其中同步還包括基台搜尋、時間與頻率同步電路、載波頻率飄移與取樣時脈飄移的偵側與補償。反調變的部份包括了殘餘分數載波頻率偏移以及殘餘取樣時間偏移的聯合估計並追蹤。而等化的部份也包括了通道估計。本論文將第一及第二部份充分的做到硬體上的共用,而第三部分則包含了低硬體成本的載波間干擾消除等化器以及可共用的MIMO等化器 2x2 STBC 和 2x2 VBLAST。 藉由相關性衰減的MIMO通道以及各式的通道模型,加上各種不完美效應,像是多重路徑瑞雷衰減、動態環境下的都普勒效應、載波頻率與取樣時脈飄移等效應,而且能成功將資料還原。 | zh_TW |
dc.description.abstract | The increasing reliance on the Internet in everyday life has led to more demand for roaming Internet services. The proposed dual mode wireless receiver fills this gap by increasing the coverage of the service area. By implementing both 802.16e and 802.11n, Internet access is made available in indoor and outdoor environments.
The purpose of this thesis is to implement a dual mode 2x2 MIMO OFDM & OFDMA with shared hardware resources. This dual mode receiver should function well in both static channels and mobile channels. It follows the specification requirement of EWC HT PHY V1.27 and IEEE 802.16e-2005, and proposes a PHY baseband simulation model to meet the specifications. The transmitter and channel models are modeled in software. The receiver uses software to model the hardware, and a fixed-point design is implemented as well. The receiver is divided into Synchronization, Tracking, and Equalization. Synchronization includes cell search, symbol boundary detection, fractional and integer CFO estimation and compensation. Tracking performs FFT, Joint Weighted Least Square Estimation, and residual CFO and SCO estimation and compensation. Equalization includes channel estimation and MIMO equalization. Effort was made to reuse hardware between Synchronization and Tracking. Additionally, Equalization supports both dynamic and static channel estimation. 2x2 MIMO STBC and VBLAST are supported as well. A low cost ICI cancellation hardware is also proposed. By adopting various channel models, including several nonlinear channel effects such as multipath Rayleigh fading, dynamic channel Doppler effect, carrier frequency offset, and sampling clock offset, the dual mode receiver has been shown to successfully recover the transmitted signal even in non-optimal environments. | en |
dc.description.provenance | Made available in DSpace on 2021-06-14T16:50:49Z (GMT). No. of bitstreams: 1 ntu-97-P95943005-1.pdf: 3331939 bytes, checksum: d36c83ca52ab92bbe2bf638992516bba (MD5) Previous issue date: 2008 | en |
dc.description.tableofcontents | 摘要 v
Abstract vii Contents ix List of Figures xv List of Tables xxi 1 Introduction 1 1.1 Background 1 1.2 Motivation of Thesis 4 1.3 Introduction of Wireless LAN 5 1.3.1 History of Wireless LAN 6 1.4 Introduction of MAN 8 1.4.1 History of MAN 8 1.4.2 Features of MAN 10 1.5 Organization of Thesis 11 2 Principles of MIMO – OFDM / OFDMA 13 2.1 Principle of MIMO 13 2.1.1 MIMO Model 14 2.1.2 MIMO Channel Capacity 15 2.1.3 MIMO Transmission Techniques 17 2.1.3.1 Space-time coding 17 2.1.3.2 Spatial Multiplexing 19 2.2 Principle of OFDM 21 2.3 Principle of OFDMA 24 2.4 Principle of MIMO OFDM/OFDMA 25 3 Baseband Channel Model 27 3.1 Introduction 27 3.2 Amplitude Clipping 28 3.3 Multipath Fading Channel 28 3.3.1 Static Channel Model 29 3.3.2 Dynamic Channel Model 32 3.3.3 Additive White Gaussian Noise 35 3.4 Receiver Impairment 36 3.4.1 Carrier Frequency Offset 36 3.4.2 Sampling Clock Offset 37 3.5 Conclusion 38 4 Baseband Transmitter Structure 41 4.1 Transmitter Architecture 41 4.2 Outer Transmitter 42 4.2.1 Scrambler 43 4.2.2 Punctured Convolutional Coding 44 4.2.3 Interleaver 46 4.2.4 Repetition Coding 47 4.3 Inner Transmitter 47 4.3.1 Constellation Mapping 47 4.3.2 Antenna Map Transforms 48 4.3.3 Pilot 50 4.3.4 Data Allocation 53 4.3.5 Permutation and Renumbering 54 4.3.6 Subcarrier Randomization 56 4.3.7 Structures & Parameters of OFDM / OFDMA 57 4.3.8 Transmission Packet / Frame Format 60 5 Dual Mode Baseband Receiver Design 65 5.1 Dual Mode Receiver Architecture 65 5.2 Synchronization 67 5.2.1 Acquisition Mode 67 5.2.1.1 Coarse Symbol Boundary Detection 69 5.2.1.2 Fractional CFO Estimation 74 5.2.1.3 Integer CFO combined Cell Search 76 5.2.2 Transmission Mode 84 5.2.2.1 Fine Symbol Boundary Detection 84 5.3 Demodulation & Tracking 88 5.3.1 Variable Length FFT 88 5.3.2 Residual CFO & SCO Tracking Loop 89 5.3.2.1 JWLS Estimator 90 5.3.2.2 Loop Low Pass Filter 94 5.3.2.3 CFO & SCO Compensation 95 5.4 Equalization 97 5.4.1 MIMO Channel Estimation 98 5.4.1.1 Preamble Channel Estimation 98 5.4.1.2 Pilot Channel Estimation 99 5.4.2 MIMO Equalization 107 5.4.2.1 Traditional STBC 107 5.4.2.2 LS-STBC 108 5.4.2.3 ICI Cancellation 111 5.4.2.3.1 ICI Modeling and Estimation 113 5.4.2.3.2 ICI Equalization 116 5.4.2.4 PIC 119 5.4.2.5 Slicer 122 6 Fixed Point Simulation 123 6.1 Output SNR Simulation 123 6.2 System Simulation 127 6.3 AWGN Channel Simulation 127 7 Discussion and Conclusion 131 8 References 135 | |
dc.language.iso | en | |
dc.title | 802.11n & 802.16e 雙模多輸入多輸出正交分頻多工基頻接收機之設計與實作 | zh_TW |
dc.title | Design and Implementation of a Baseband Receiver for 802.11n & 802.16e Dual Mode MIMO OFDM/OFDMA | en |
dc.type | Thesis | |
dc.date.schoolyear | 96-2 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 曹恆偉(Hen-Wai Tsao),黃元豪(Yuan-Hao Huang) | |
dc.subject.keyword | 802.11n,802.16e,多輸入多輸出,正交分頻多工, | zh_TW |
dc.subject.keyword | 802.11n,802.16e,MIMO,OFDM,OFDMA,Dual Mode, | en |
dc.relation.page | 140 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2008-07-31 | |
dc.contributor.author-college | 電機資訊學院 | zh_TW |
dc.contributor.author-dept | 電子工程學研究所 | zh_TW |
顯示於系所單位: | 電子工程學研究所 |
文件中的檔案:
檔案 | 大小 | 格式 | |
---|---|---|---|
ntu-97-1.pdf 目前未授權公開取用 | 3.25 MB | Adobe PDF |
系統中的文件,除了特別指名其著作權條款之外,均受到著作權保護,並且保留所有的權利。