簡易檢索 / 詳目顯示

回結果列表
研究生： 吳聲暉
Sheng-Hui Wu
論文名稱： 動態子載波編碼式合作通訊於SC-FDMA系統之應用
Coded cooperation with dynamically assigned subcarriers in SC-FDMA systems
指導教授： 張立中
Li-Chung Chang
口試委員: 曾德峰
Der-Feng Tseng
劉馨勤
Hsin-Chin Liu
陳永芳
none
學位類別： 碩士
Master
系所名稱： 電資學院 - 電機工程系
Department of Electrical Engineering
論文出版年： 2010
畢業學年度： 98
語文別： 中文
論文頁數： 68
中文關鍵詞： 單載波分頻多工存取 、正交分頻多工存取 、合作分集 、動態子載波選擇 、峰均功率比
外文關鍵詞： dynamically assign subcarrier
相關次數： 點閱：192  下載：0 
分享至:
查詢本校圖書館目錄 查詢臺灣博碩士論文知識加值系統 勘誤回報
  •  上一筆

    • 在未來的通訊系統中，SC-FDMA扮演一個非常重要的角色，SC-FDMA可看作是OFDMA的變化，SC-FDMA系統複雜度與OFDMA相同，並可提供與OFDMA相近的系統表現，一個最重要的優點就是擁有比OFDMA更低的PAPR。
    本論文提出動態子載波編碼式合作通訊於SC-FDMA系統之應用，動態子載波編碼式合作通訊於SC-FDMA可以提供時間、頻率與空間分集，透過合作方案可以得到時間與空間的分集，利用每個使用者與他的夥伴互相幫助使用動態子載波選擇傳送資料，得到更多頻率分集增益，模擬結果證明使用動態子載波錯誤率表現與資料傳輸量比直接傳送與適應合作來得好。
    另外動態子載波編碼式合作通訊於SC-FDMA系統之應用中的動態子載波選擇，讓使用者合作時能依通道的狀況，使用較好的子載波進而提升錯誤率表現與資料傳輸量，但是需要通道訊息，不過模擬結果顯示，在通道估測訊息出現誤差時，動態子載波編碼式合作通訊於SC-FDMA系統還是有不錯的錯誤率表現與資料傳輸量。

    Single carrier frequency division multiple access (SC-FDMA) is a novel technique that can be utilized in future communication systems. SC-FDMA is a modified form of Orthogonal FDMA (OFDMA) and it can provide a similar throughput performance and the same overall complexity as OFDMA. Most importantly, SC-FDMA has lower peak-to-average power ratio (PAPR) comparing with OFDMA.
    In this thesis, I proposed Coded cooperation with dynamically assigned subcarriers in SC-FDMA systems, It can provide time, frequency and space diversity in SC-FDMA systems. Using suitable cooperation strategy, it can improve time and space diversity. Also each user cooperatively transmits his data and partner’s by dynamic allocation of subcarriers to obtain improvement in frequency diversity. From the results of numerical simulation, it was quite obvious that the proposed scheme outperforms direct transmission and adaptive cooperation scheme in Bit Error Rate (BER) performance and data rate.
    According to the situation of channels, the dynamic allocation of subcarriers of Coded cooperation with dynamically assigned subcarriers in SC-FDMA systems improves the BER performance and data rate for every user of utilizing superior subcarriers in SC-FDMA. However, it will require channel information by estimating. The results of simulation show that Coded cooperation with dynamically assigned subcarriers in SC-FDMA systems can provide satisfied performance for a little inaccurate channel estimation.

    目錄 誌謝……………………………………………………………………….I 論文摘要...................................................................................................II ABSTRACT............................................................................................III 目錄..........................................................................................................IV 表目錄......................................................................................................VI 圖目錄....................................................................................................VII 第一章 前言............................................................................................1 第二章 相關理論介紹........................................................................... 3 2.1無線通訊環境…. ................................................................................3 2.2 SC-FDMA簡介……. ..........................................................................5 2.2.1 SC-FDMA命名原因……................................................................5 2.2.2 SC-FDMA系統架構圖…................................................................6 2.2.3 SC-FDMA系統與其它系統比較………………………………………..10 2.3 迴旋碼……….................................................................................11 2.4 交錯器…..........................................................................................13 2.5 通道等化器…. .................................................................................14 2.6分集……………................................................................................17 2.7編碼式合作式通訊…. .......................................................................18 2.8 通道相依程序 vs 動態子載波合作…………………………..…………...21 第三章 SC-FDMA系統架構下編碼式合作通訊和動態子載波選擇.24 3.1 SC-FDMA系統架構下編碼式合作通訊................................................24 3.2合作通訊的合作方案…......................................................................29 V 3.3 適應合作…….................................................................................32 3.4 動態子載波選擇…….......................................................................32 3.4.1 資料傳送量定義…......................................................................32 3.4.2 動態子載波選擇…......................................................................34 第四章 模擬結果與討論….................................................................40 4.1參數設定..........................................................................................40 4.2 動態子載波選擇加上資料量補償. .....................................................43 4.2.1補償到與直接傳送資料量相等…...................................................43 4.2.2 補償到比直接傳送資料量更多…..................................................47 4.3 通道估測出現誤差…....................................................................…51 4.4經過兩個不同獨立通道…..................................................................56 4.5 增加IFFT…................................................................................….58 4.6 結論…................................ ...........................................................60 第五章 結論與未來研究發展…..........................................................63 VI 表目錄 表 3.1 Channel delay profiles of ITU Pedestrian A and Vehicular A channels …..28 表4.1 補償到與直接傳送資料量相等………………………………………….…60 表4.2 補償到比直接傳送資料量更多……………………………………….……61 表4.3 通道估測出現誤差…………………………………………………….……61 表 4.4 經過兩個不同的通道環境………………………………………….……...61 表 4.5 增加IFFT………………………..................................................................62 表 4.6 綜合比較…………………............................................................................62 VII 圖目錄 圖2.1無線通訊的環境..............................................................................................4 圖2.2 為什麼叫作SC-FDMA..................................................................................5 圖2.3 循環字首(CP) ............................................................................................... 6 圖2.4 SC-FDMA系統架構圖................................................................................7 圖 2.5 使用M=4、Q=3跟N=12下，DFDMA與LFDMA子載波映射方案..... 8 圖2.6 位元錯誤率圖................................................................................................9 圖2.7 SC-FDMA、OFDMA傳送與接收的結構...................................................10 圖2.8 碼率1/3 限制長度為3的迴旋編碼器架構..............................................12 圖2.9 交錯器動作圖............................................................................................. 13 圖2.10 合作式通訊. ..............................................................................................19 圖2.11 編碼合作式通訊....................................................................................... 20 圖 2.12 Channel Dependent Scheduling.................................................................22 圖2.13 合作式通訊............................................................................................... 22 圖3.1 SC-FDMA合作式通訊圖......................................................................... 25 圖3.2 子載波映射的例子對於Q=3、N=4、M=12...........................................27 圖3.3 Cyclic prefix...............................................................................................27 圖3.4 a direct form II transposed structure...........................................................28 圖3.5 (a)直接傳送方案 (b)實際合作方案...................................................... 30 圖3.6 SC-FDMA系統 (a)半全雙工合作 (b)全雙工合作..............................31 圖3.7 資料量定義(a)半雙工合作(b)全雙工合作.............................................. 34 圖3.8 vehicular A channel....................................................................................36 圖3.9 vehicular A channel(LFDMA) ..................................................................36 圖 3.10 vehicular A channel(動態子載波選擇) ....................................................37 圖 3.11 得到通道訊息...........................................................................................38 圖3.12 動態子載波選擇流程圖............................................................................39 圖4.1 Ped.A Channel 通道係數..........................................................................41 圖4.2 Veh.A Channel 通道係數..........................................................................41 圖4.3 Proakis’C Channel 通道係數....................................................................42 VIII 圖4.4頻率域的通道響應圖...................................................................................43 圖4.5 AWGN 的錯誤率表現圖............................................................................ 44 圖4.6Ped.A Channel錯誤率表現圖.......................................................................45 圖4.7veh.A Channel錯誤率表現圖.......................................................................46 圖4.8Proakis’C Channel錯誤率表現圖.................................................................46 圖 4.9 AWGN(補償後) ..........................................................................................47 圖4.10 Ped.A Channel(補償後) .............................................................................48 圖4.11Veh.A Channel(補償後) ..............................................................................49 圖 4.12 Proakis’C Channel(補償後) ......................................................................50 圖4.13 Veh.A Channel通道估測............................................................................51 圖4.14 Ped.A Channel通道估測............................................................................52 圖4.15 Proakis’C Channel通道估測...................................................................52 圖4.16 AWGN(通道估測) .....................................................................................53 圖4.17 Ped.A Channel(通道估測) ..........................................................................54 圖4.18 Veh.A Channel(通道估測) .........................................................................54 圖 4.19 Proakis’C Channel(通道估測) .................................................................55 圖4.20 Veh.A and Ped.A.........................................................................................56 圖4.21 Ped.A and Proakis’C...................................................................................57 圖4.22 Veh.A and Proakis’C..................................................................................57 圖4.23 Ped Channel(IFFT) ....................................................................................58 圖4. 24 Veh.A Channel(IFFT) ...............................................................................59 圖 4.25 Proakis’C Channel(IFFT) .........................................................................59

    [1] H. Sari, G. Kara, and l. Jeanclaude, “Transmission techniques for Digital Terrestrial TV Broadcasting,” IEEE Commun. Mag;, vol. 33, no 2, Feb.1995, pp. 100-109.
    [2] H. Sari, G. Kara, and l. Jeanclaude, “Frequency-Domain Equalization of Mobile Radio and Terrestrial Broadcast Channel,” Proc. GLOBECOM ’94, San Francisco, CA, Nov.-Dec. 1994 pp. 1-5.
    [3] Falconer, et al., “Frequency domain equalization for single-carrier
    broadband wirelss systems,” IEEE Commun., Mag., vol. 40, pp. 58-66,April 2002.
    [4] Andrew Sendonaris, Elza Erkip, and Behnaam Aazhang, “Increasing
    uplink capacity via user cooperation diversity,” in Proc. IEEE Int.
    Symp.Information Theory (ISIT), Cambridge, MA, Aug. 1998.
    [5] J. N. Laneman, D. N. C. Tse, and G. W. Wornell, “Cooperative
    Diversity in Wireless Networks: Efficient Protocols and Outage
    Behavior, ” IEEE Trans. Inform. Theory, vol. 50, no. 12, pp. 3062-3080,Dec. 2004.
    [6] T. Hunter and A. Nosratinia, “Cooperation Diversity through coding, ” in Proc. International Symposium on Information Theory, Lausanne,Switzerland, June, 2002.
    [7] B. Zhao and M. Valenti, “Distributed turbo coded diversity for the relay nchannel,” in Electron. Lett., pp. 786-787, May 2003
    [8] Andrej Stefanov and Elza Erkip, “Cooperative Coding for Wireless
    Neworks, ” IEEE Transactions on Communications, vol. 52, No. 9, pp.1470-1476, September 2004.
    66
    [9] Jun Niu and I-Tai Lu, “Coded Cooperation in OFDMA Systems,”
    Conference on Information Sciences and Systems, Princeton, NJ, 2006.
    [10] Jerry C. H. Lin and Andrej Stefanov, “Cooperative Coding for OFDM Systems, ” Proceedings of 9th Canadian Workshop on Information Theory, pp. 62-65, Montreal, Canada, June 2005
    [11] R. Knopp and P. Humblet, “On coding for block fading channels,”
    IEEE Trans. Inform. Theory, vol. 46, no. 1, pp. 189--205, Jan. 2000.
    [12] E. Biglieri, G. Caire and G. Taricco, “Limiting performance of block fading channels with multiple antenna,” IEEE Trans. on Inform. Theory, vol. 47, no. 4, pp. 1273-1289, May 2001
    [13] Theodore S. Rappaport, Wireless Communication Principles And Practice Second Edition, PHPTR, 2002.
    [14] H. G. Myung, et al, “Peak-to-average Power Ratio of Single Carrier
    FDMA Signals with Pulse Shaping,” Accepted to IEEE PIMRC’06
    [15] Junsung Lim, Hyung G. Myung, Kyungjin Oh, and David J.Goodman, “Channel-Dependent Scheduling of Uplink Single Carrier FDMA Systems” , IEEE,2006
    [16] Jeffrey G. Andrews, Andrews, Arunabha, Ghosh,Rias Muhaned. “Fundamentals of WiMAX Understanding Broadband Wireless Networking”
    [17] Hyung G. Myung,David J.Goodman, “Single Carrier FDMA A New Air Interface for Long Term Evolution”
    [18] Aria Nosratinia, University of Texas, Dallas, Todd E. Hunter, Nortel Networks Ahmadreza Hedayat, University of Texas, Dallas,.
    67
    “Cooperative Communication in Wireless Networks” IEEE Communications Magazine, pp.74-80
    [19] Das, S., Li, S., Monogioudis, P., et al., “EV-DO Revision C: Evolution of the cdma2000 Data Optimized System to Higher Spectral Efficiencies and Enhanced Services,” Bell Labs Tech. Jour., vol. 11, no. 4, Mar. 2007, pp. 5–24.
    [20] Mohamed Noune and Andrew Nix, University of Bristol, “Frequency-Domain Precoding for Single Carrier Frequency-Division Multiple Access” IEEE Communications Magazine,June 2009. pp. 68-74.
    [21] Hyung G. Myung, Junsung Lim, and David J. Goodman , Polytechnic University “Single Carrier FDMA for Uplink Wireless Transmission” IEEE VEHICULAR TECHNOLOGY MAGAZINE,SEPTEMBER 2006,pp 30-38.
    [22] Hyung G. Myung, “INTRODUCTION TO SINGLE CARRIER FDMA ”EUSIPCO 2007,September 3-7,2007, pp.2144-2148
    [23] Jun Nju and I-Tai Lu, “Coded Cooperation on Block-Fading Channels in Single –Carrier FDMA Systems” IEEE GLOBECOM 2007, pp.4339-4343.
    [24] 3rd Generation Partnership project, 3GPP TS 25.101-Technical Specification Group Radio Access Network; User Equipment (UE) Radio Transmission and Reception (FDD) (Release 7),Sep. 2007,Section B.2.2.
    [25] J.G. Proakis, Digital Communication.4thed.McGraw-Hill,2001
    [26] Hyung G. Myung and David J.Goodman,Single Carrier FDMA A
    68
    New Air Interface for Long Term Evolution,WILEY, December 2008
    [27] Benard Sklar,Digital communications:fundamentals and applications, Englewood Cliffs, N.J. : Prentice-Hall, c1988,1988
    [28] Jun Niu,I-Tai Lu,Coded Cooperation on Block-Fading Channels in Single-Carrier FDMA Systems,IEEE GLOBECOM 2007
    [29] Theodore S. Rappaport,Wireless Communications Principles and Practice Second Edition,PHPTR,2002

    無法下載圖示 全文公開日期 2015/07/28 (校內網路)
    全文公開日期 2030/07/28 (校外網路)
    全文公開日期 2030/07/28 (國家圖書館：臺灣博碩士論文系統)
    QR CODE