在多路徑環境之分集結合接收器之
二階統計特性

以作者查詢圖書館館藏

、以作者查詢臺灣博碩士

、以作者查詢全國書目

、勘誤回報

、線上人數：20

、訪客IP：18.119.158.115

姓名

謝政達(Cheng-Ta Hsieh) 查詢紙本館藏

畢業系所

通訊工程學系

論文名稱

在多路徑環境之分集結合接收器之二階統計特性
(Second-Order Statistics of Diversity Combining Reception in Multipath Communication )

相關論文

★ 運用SIFT特徵進行光學影像目標識別	★ 語音關鍵詞辨識擷取系統
★ 適用於筆記型電腦之WiMAX天線研究	★ 應用於凱氏天線X頻段之低雜訊放大器設計
★ 適用於802.11a/b/g WLAN USB dongle曲折型單極天線設計改良	★ 應用於行動裝置上的雙頻(GPS/BT)天線
★ SDH設備單體潛伏性障礙效能分析與維運技術	★ 無風扇嵌入式觸控液晶平板系統小型化之設計
★ 自動化RFID海關通關系統設計	★ 發展軟體演算實現線性調頻連續波雷達測距系統之設計
★ 近場通訊之智慧倉儲管理	★ 在Android 平台上實現NFC 室內定位
★ Android應用程式開發之電子化設備巡檢	★ 鏈路預算估測預期台灣衛星通訊的發展
★ 在中上衰落通道中分集結合技術之二階統計特性	★ 先進長程演進系統中載波聚合技術的初始同步

檔案

[Endnote RIS 格式]

[Bibtex 格式]

[相關文章]

[文章引用]

[完整記錄]

[館藏目錄]

[檢視]

[下載]

本電子論文使用權限為同意立即開放。
已達開放權限電子全文僅授權使用者為學術研究之目的，進行個人非營利性質之檢索、閱讀、列印。
請遵守中華民國著作權法之相關規定，切勿任意重製、散佈、改作、轉貼、播送，以免觸法。

摘要(中)

在無線通訊系統下，分集結合技術對於降低多路徑衰落的效應而言是不可或缺的，並且分集技術被期望為可以增加系統的效能。然而在相關性通道分支的情況下，分集技術的作用力會被降低。在空間分集技術的應用上，若天線沒有被間隔至少同調頻寬以上，通道之間產生相關性的現象是時常發生的。對於無線通訊系統效能的估測而言，二階統計特性是一個重要的指標。我們所提出的方法是利用Karhunen-Loeve 展開式，將原本具有相關性的隨機變數轉換為獨立的隨機變數，則這些獨立的隨機變數可以接著以分集結合技術處理，並期望觀察通道之統計特性。

摘要(英)

For wireless communication systems, diversity combining techniques are indispensable for reducing the multipath fading effects, and it is expected to enhance the system performance. However, diversity techniques are diminished over correlated channel branches, which are commonly occurred in space diversity if the antennas are not separated at least coherence bandwidth. Second-order statistics are crucial performance criterion to evaluate the diversity effects of fading channels, whereas the performance in a correlated diversity system must be worse than that on independent multipath fading channels. A method which is to transform the correlated diversity branches into uncorrelated ones by the Karhunen-Loeve expansion, and then the transformed independent random variables are fed into the diversity combiner, and is expected to study the statistics of the fading channels.

關鍵字(中)

★ 分集結合
★ 多路徑衰落
★ 相關性通道
★ 二階統計特性
★ Karhunen-Loeve 展開式

關鍵字(英)

★ multipath fading
★ diversity combining
★ correlated channel
★ second-order statistics
★ Karhunen-Loeve expansion

論文目次

Contents
Chapter 1 Introduction 1
Chapter 2 Review of Channel Model, Diversity
Combining and Second-Order Statistics 5
2.1 Channel Model 5
2.2 Diversity Combining 8
2.2.1 Diversity Combining Methods 9
2.2.2 Diversity Combining Techniques 10
2.3 First-Order Statistics 12
2.3.1 Channel Capacity 12
2.3.2 Probability of Error 14
2.3.3 Outage Probability 14
2.4 Second-Order Statistics 15
Chapter 3 Second-Order Statistics of Diversity
Combining over Fading Channels 18
3.1 LCR and AFD of Multipath Fading Channel 18
3.1.1 Rayleigh Case 18
3.1.2 Nakagami-m Case 20
3.2 LCR and AFD of Maximal-Ratio Combining in
Multipath Fading Channels 24
3.2.1 Rayleigh Case 24
3.2.2 Nakagami-m Case 27
3.3 LCR and AFD of Equal-Gain Combining in Multipath
Fading Channels 32
3.3.1 Rayleigh Case 32
3.3.2 Nakagami-m Case 36
3.4 LCR and AFD of Selection Combining in Multipath
Fading Channels 39
3.4.1 Rayleigh Case 39
3.4.2 Nakagami-m Case 42
Chapter 4 A Study of Correlated Fading Channels 48
4.1 Direct Deviation of Correlated Diversity System 48
4.2 LCR for MRC Receiver over Correlated Fading
Channels with Bounded Variance 51
4.3 Cholesky Decomposition for Correlated Diversity
System 57
4.4 Diagonalization of the Correlated Fading Channels
through Karhunen-Loeve Expansion 59
Chapter 5 Conclusion 65
Reference 66

參考文獻

[1] S. Haykin, Communication Systems, 4th edition, John Wiley & Sons, 2001.
[2] A. Goldsmith, Wireless Communications, Stanford University Press, 2003.
[3] M. K. Simon and M.-S. Alouini, Digital Communication over Fading Channels, 2nd edition, John Wiley & Sons, 2005.
[4] J. G. Proakis, Digital Communications, 4th edition, McGraw-Hill, 2001.
[5] D. G. Brennan, “Linear diversity combining techniques,” Proc. IRE, vol.47, pp. 1075-1101, Jun. 1959.
[6] M.-S. Alouini and A. J. Goldsmith, “Capacity of Rayleigh fading channels under different adaptive transmission and diversity-combining techniques,” IEEE Trans. Veh. Technol., vol. 48, no. 4, Jul. 1999.
[7] W. C. Jakes, Jr., Ed., Microwave Mobile Communications. New York: Wiley, 1974.
[8] M. D. Yacoub, J. E. Vargas B. and L. G. de R. Guedes, “On higher order statistics of the Nakagami- distribution,” IEEE Trans. Veh. Technol., vol. 48, pp. 790-794, May 1999.
[9] M. Nakagami, “The -distribution – a general formula of intensity distribution of rapid fading,” in Statistical Methods in Radio Wave Propagation, W. C. Hoffman, Ed. Elmsford, NY: Pergamon, 1960.
[10] M. D. Yacoub, C. R. C. M. da Silva and J. E. Vargas B., “Second-order statistics for equal gain and maximal ratio diversity-combining reception,” Electron. Lett., vol. 36, no. 4, pp. 382-384, Feb. 2000.
[11] H. Stark and J. W. Woods, Probability and Random Processes with Applications to Signal Processing, 3rd edition, Prentice Hall, 2002.
[12] A. L.-Garcia, Probability and Random Processes for Electrical Engineering, 2nd edition, Addison Wesley, 1994.
[13] M. D. Yacoub, C. R. C. M. da Silva and J. E. Vargas B., “Second-order statistics for diversity-combining techniques in Nakagami-fading channels,” IEEE Trans. Veh. Technol., vol. 50, no. 6, Nov. 2001.
[14] C.-D. Iskander and P. T. Mathiopoulos, “Analytical level crossing rates and average fad durations for diversity techniques in Nakagami fading channels,” IEEE Trans. Commun., vol. 50, no. 8, Aug. 2002.
[15] M. D. Yacoub, C. R. C. M. da Silva and J. E. Vargas B., “Level crossing rate and average fade duration for pure selection and threshold selection diversity-combining systems,” Intl. J. on Commmun. Systems, vol. 14, pp. 897-907, Dec. 2001.
[16] X. Dong and N. C. Beaulieu, “Average level crossing rate and average fade duration of selection diversity,” IEEE Commun. Lett., vol. 5, pp. 396-398, Oct. 2001.
[17] M. Z. Win and J. H. Winters, “Analysis of hybrid selection/maximal-ratio combining in Rayleigh fading,” IEEE Trans. Commun., vol. 47, pp. 1773-1776, Dec. 1999.
[18] L. Yang and M.-S. Alouini, “An exact analysis of the impact of fading correlation on the average level crossing rate and average outage duration of selection combining,” Proc. Veh. Technol. Conf. (VTC2003), vol. 1, pp. 241-245, Apr. 2003.
[19] K. Zhang, Z. Song and Y. L. Guan, “Cholesky decomposition model for correlated mrc diversity systems in Nakagami fading channels,” Proc. Veh. Technol. Conf. (VTC2002), vol. 3, pp. 1515-1519, Sep. 2002.
[20] J. C. S. S. Filho, G. Fraidenraich and M. D. Yacoub, “Exact crossing rates of dual diversity over unbalanced correlated Rayleigh channels,” IEEE Commun. Lett., vol. 10, no. 1, Jan. 2006.
[21] D. Li and V. K. Prabhu, “Average level crossing rates and average fade durations for maximal-ratio combining in correlated Nakagami channels,” Proc. Wireless Commun. Network Conf. (WCNC2004), vol. 1, pp. 339-344, Mar. 2004.
[22] Q. T. Zhang, “Maximal-ratio combining over Nakagami fading channels with an arbitrary branch covariance matrix,” IEEE Trans. Veh. Technol., vol. 48, no. 4, pp. 1141-1150, Jul. 1999.
[23] V. A. Aalo, “Performance of maximal-ratio diversity systems in a correlated Nakagami-fading environment,” IEEE Trans. Commun., vol. 43, no. 8, Aug. 1995.
[24] G. K. Karagiannidis, D. A. Zogas and S. A. Kotsopoulos, “On the multivariate Nakagami-m distribution with exponential correlation,” IEEE Trans. Commun., vol. 51, no. 8, Aug. 2003.
[25] R. K. Mallik, “The uniform correlation matrix and its application to diversity,” IEEE Trans. Wireless Commun., vol. 6, no. 5, May 2007.
[26] Q. T. Zhang, “Efficient generation of correlated Nakagami fading channels with arbitrary fading parameter,” Proc. Int. Conf. Commun. (ICC2002), no. 1, pp. 1358-1362, Apr. 2002.
[27] H. V. Poor, An Introduction to Signal Detection and Estimation, 2nd Ed., Springer, 1994.
[28] Q. T. Zhang, “A decomposition technique for efficient generation of correlated Nakagami fading channels,” IEEE Journ. Sel. Area. Commun., vol. 18, no. 11, Nov. 2000.

指導教授

林嘉慶(Jia-Chin Lin)

審核日期

2008-7-23

推文