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研究生: 黃博祥
論文名稱: 雷利衰減通道下針對訊號空間分集的最佳調變星座映射設計
Optimal Constellation Mapping for Signal Space Diversity in Rayleigh Fading Channels
指導教授: 蔡育仁
口試委員: 溫志宏
黃政吉
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: 2012
畢業學年度: 100
語文別: 英文
論文頁數: 54
中文關鍵詞: 訊號空間分集映射最佳化
外文關鍵詞: signal space diversity, rotation, constellation mapping
相關次數: 點閱:3下載:0
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  • 訊號空間分集是一項藉由旋轉星座點後再將實虛部做打散、重組的動作進而得到分集增益的技術。也由於打散及重組的動作,並且判定邊界會隨著通道效應而改變等因素,使得整個系統的符號錯誤率變成一個複雜的問題。然而我們從模擬觀察到一些現象,並從中分析出了一些性質:我們發現一般傳統中最佳的格雷映射在這個狀況下並非最佳的映射;另外兩個星座點之間的積距離大小決定了兩個星座點錯誤率。因此我們利用蒙地卡羅方法以及積距離這項性質,針對幾個符號錯誤率較低的角度,設計出一個能達到最低位元錯誤率的星座映射。


    Contents Abstract I Contents II Chapter 1 1 Introduction 1 Chapter 2 4 SSD Background 4 2.1 SSD signal model 4 2.2 Properties of SSD 6 Chapter 3 8 System model and SSD Properties 8 3.1 System model 8 3.2 Noise and Decision Boundaries 10 3.3 Theoretical Symbol Error Rate 13 Chapter 4 15 Proposed Mapping Method 15 4.1 Product distance 15 4.2 8QAM Scheme 16 4.3 16QAM Scheme 30 4.4 Theoretical Bit Error Rate 40 Chapter 5 42 Simulation Results and Discussion 42 5.1 Simulations for the case of 8QAM 42 5.2 Simulations for the case of 16QAM 45 Chapter 6 50 Conclusion 50 Bibliography 51

    [1] J. Boutros and E. Viterbo, “Signal Space Diversity: A Power- and Bandwidth- Efficient Diversity Technique for the Rayleigh Fading Channel,” IEEE Transactions on Information Theory, vol. 44, pp. 1453–1467, July 1998.
    [2] J. Kim and I. Lee, “Analysis of Symbol Error Rates for Signal Space Diversity in Rayleigh Fading Channels,” IEEE Transactions on Communications, 2009.
    [3] N. F. Kiyani, J. J. Weber, A. G. Zajic amd G. L. Stuber, “Performance Analysis of a System using Coordinate Interleaving and Constellation Rotation in Rayleigh Fading Channels,” Vehicular Technology Conference, 2008.
    [4] S. Jeon, I. Kyung and M. S. Kim, “Component-Interleaved Receive MRC with Rotated Constellation for Signal Space Diversity,” Vehicular Technology Conference Fall, 2009.
    [5] J. Kim, W. Lee, J. Kim, and I. Lee, “On the Symbol Error Rates for Signal Space Diversity Schemes over a Ricean fading channel,” IEEE Transactions on Communications, VOL. 57, NO. 8, AUGUST 2009.
    [6] J. G. Proakis, Digital Communication, 5th ed. McGraw-Hill
    [7] D. Tse and P. Viswanath, Fundamental of Wireless Communication, Cambridge.
    [8] E. Ip and J. M. Kahn, “Carrier Synchronization for 3- and 4-bit-per-symbol Optical Transmission,” J. Lightw. Technol..
    [9] J. Boutros, E. Viterbo, C. Rastello and J.-C. Belfiore, “Good Lattice Constellations for Both Rayleigh fading and Gaussian Channels,” IEEE Transactions on Information Theory, VOL. 42, NO. 2, MARCH 1996
    [10] S. Ghahramani, Fundamentals of Probability with Stochastic Processes, 3rd Edition

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