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研究生:呂理政
研究生(外文):Li-Zheng Lu
論文名稱:改良式分集階層樹結合不同分集結合技術於部分頻帶雜訊干擾傳輸影像之研究
論文名稱(外文):A Modified SPIHT Format with Different Diversity Combining for Image Transmission under PBNJ
指導教授:鄭立德
指導教授(外文):Li-Der Jeng
學位類別:碩士
校院名稱:中原大學
系所名稱:電子工程研究所
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2011
畢業學年度:99
語文別:中文
論文頁數:42
中文關鍵詞:快跳頻裡德索羅門碼分集階層樹結合分集結合
外文關鍵詞:SPIHTRS CodeDiversity CombiningFFH
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在本論文中,我們使用了一種新式影像壓縮技術搭配等效增益結合(Equal gain combining,EGC)、最大增益結合(Maximal ratio combining,MRC)與選擇性結合(Selective combining,SC)三種分集結合方式在接收端部分將分散訊號結合起來,對影像在部分頻帶干擾下進行有效傳輸的測試。為了對抗通道中的干擾,我們結合跳頻展頻系統(Frequency-Hopping Spread Spectrum,FH-SS)與禮德-索羅門(Reed-Solomom,RS)碼應用於傳輸影像之保護。除此之外,我們分別在不同的干擾環境與新舊影像壓縮方式中,測試三種結合方式對傳輸過後影像品質的影響,根據結果顯示在失真較為嚴重的時候,分集結合方式可以減少影像的失真。
In this paper, we consider a new image compression technology with equal gain combining, maximal ratio combining, and selective combining three kinds of diversity combining. We use different diversity combining can improve the received image quality for fast frequency-hopping (FFH) system to resist the jamming. Simulation result shows that in same condition, maximal ratio combining has better performance better than other.
目錄
摘要....................................................................................I
ABSTRACT...........................................................................II
誌謝..................................................................................III
目錄...................................................................................IV
圖目錄...............................................................................V
表目錄...............................................................................VI
CHAPTER 1介紹......................................................................1
1.1 動機...........................................................................1
1.2 架構...........................................................................3
CHAPTER 2基本概念..................................................................5
2.1 跳頻展頻系統介紹............................................................5
2.2 部分頻帶雜訊干擾模型.......................................................9
CHAPTER 3 REED-SOLOMON (RS) CODE.........................................12
3.1 RS CODE簡介..................................................................12
3.2 RS CODE的特性................................................................13
3.3 RS CODE編碼..................................................................15
3.4 RS CODE解碼..................................................................16
CHAPTER 4影像傳輸方式............................................................18
4.1 系統描述.....................................................................18
4.2 MSPIHT 演算法...............................................................20
4.3 小波區域分集結合...........................................................30
4.4 通道編碼.....................................................................33
CHAPTER 5模擬結果......................................................35
CHAPTER 6結論..........................................................41
參考文獻.................................................................42

圖目錄
圖2.1 跳頻系統之傳送機. 6
圖2.2 跳頻系統之接收機. 7
圖2.3 快跳頻系統示意圖 8
圖2.4 部分頻帶雜訊干擾與可加性白高斯雜訊之公率頻譜密度 10
圖4.1 影像傳輸系統方塊圖. 19
圖4.2 樹狀結構中父與子代關係示意圖 20
圖4.3 輸出資料流內容示意圖. 27
圖4.4 新格式輸出資料流內容位置示意圖 27
圖4.5 新格式輸出資料流內容位置示意圖 29
圖4.6 通道編碼結合INTERLEAVER示意圖. 34
圖5.1 GOLDHILL原始影像. 35
圖5.2 在PBNJ、SNR=8DB、SJR=6DB、Ρ=0.6模擬的結果 36
圖5.3 在PBNJ、SNR=8DB、SJR=7DB、Ρ=0.6模擬的結果 36
圖5.4 高壓縮率與低壓縮率的比較. 38

表目錄
表3.1 使用P(X)所產生之元素表. 14
表4.1 編碼順序對照表. 26


[1]M. B. Pursley and W. E. Stark, “Performance of Reed-Solomon coded frequency-hop spread-spectrum communications in partial-band inter-ference ,”IEEE Trans. Commun., vol. COM-33, pp. 767-774, Aug. 1985

[2]C. D. Frank and M. B. Pursly, “Concatenated coding for frequency-hop spread-spectrum with partial-band

[3]interference,” IEEE Trans. Commun., vol. 44, pp.377-387, Mar. 1996.

[4]Yu. T. Su, Li-Der Jeng, “Anijam capability analysis of RS-coded slow frequency-hopped systems,” IEEE Trans. Commun., vol 48, No. 2. Feb.2000.

[5]Q. Zhang and T. Le-Ngoc, “Turbo product codes for FH-SS with partial-band interference,” IEEE Trans. Commun.,vol. 1, pp.513-520, July 2002.

[6]Li-Der Jeng and C. H. Su, “Image Restoration for Reed-Solomon Coded SFH/MFSK System with Partial-Band Noise Jamming,” in IEEE International Symposium on Intelligent Signal Processing and Communications Systems(ISPACS’09), pp. 220-223, Kanazawa, Dec 7-9 2009.

[7]A. Said and W. A. Pearlman, “A new fast, and efficient image codec base on set partitioning in hierarchical trees,” IEEE Trans. on Circuits and Systems for Video Technology, vol. 6, no 3, pp. 243-250, June 1996.

[8]Li, Z. ; Latva-Aho, M. , “Performance evaluation of interleaved MC-CDMA systems with correlated Nakagami-m fading channels” in 2005 IEEE 61st, Vehicular Technology Conference, 2005. VTC 2005-Spring, vol. 1,pp. 387-391 Vol. 1, 30 May-1 June 2005

[9]Chao-Ping Huang, Li-Der Jeng and Chi-Yang Wei, “ A robust image transmission scheme for FFH/MFSK systems under PBNJ” in IEEE 2010 International Symposium on Intelligent Signal Processing and Communication Systems (ISPACS), pp. 1-4,6-8 Dec.2010

[10] L. C. Ramac and P. K. Varshney, “A wavelet domain diversity method for transmission for images over wireless channels”, IEEE Journal on Selected Areas in Communications, Vol. 18, pp. 891-898, Jun. 2000.

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