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姓名 簡紹倫(Shao-Lun Chien) 查詢紙本館藏 畢業系所 通訊工程學系 論文名稱 么正空時調變的碼搜尋
(Code Searches of Unitary Space-time Modulation)相關論文 檔案 [Endnote RIS 格式]
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摘要(中) 么正空時調變可用於傳送端與接收端不知道衰退係數的平坦衰退通道中,本論文提出一種新的么正空時調變,不同於過去所提出的架構,我們考慮不具有代數結構的么正空時碼字,使用漸進聯集上界與分集乘積去電腦搜尋么正空時碼字。
摘要(英) Unitary space-time modulation(USTM) is well tailored for flat fading channels where neither the transmitter nor the receiver knows the fading coefficients. In this thesis, we propose a new schemes of unitary space-time modulation. Different from the past proposed systematic codeword, we consider the unitary space-time codeword which don’t have the algebraic structure. Then we use asymptotic union bound and diversity product to search unitary space-time codeword.
關鍵字(中) ★ 分集乘積
★ 漸進聯集上界
★ 平坦衰退通道
★ 么正空時調變關鍵字(英) ★ diversity product
★ asymptotic union bound
★ Unitary space-time modulation
★ flat fading channel論文目次 摘要
Abstract
圖表目錄
目錄
第一章 緒論
1.1 空時碼的念…………………………………………………1
1.2 空時碼的系統型……………………………………………3
1.3 研究動機……………………………………………………4
第二章 各種空時碼介紹
2.1 么正空時調變………………………………………………5
2.1.1 信號設計…………………………………………………6
2.1.2 搜索最佳生成矩陣………………………………………8
2.2 以訓練碼建構么正空時調變………………………………10
第三章 么正空時調變的碼字建構與碼搜尋
3.1 設計準則一:漸近聯集上界………………………………12
3.1.1 雷利衰退通道……………………………………………12
3.1.2 最大概似檢測器的效能…………………………………13
3.1.3 以建近聯集上界建構碼字………………………………14
3.2 設計準則二:分集乘積……………………………………15
3.3 最佳化24APSK信號星座圖………………………………16
3.3.1 信號星座圖………………………………………………17
3.3.2 最佳化24APSK內外圈半徑值……………………………19
3.4 碼字的位元對應……………………………………………25
第四章 模擬結果
4.1 比較不同設計準則…………………………………………28
4.2 與之前的USTM比較………………………………………39
4.3 與訓練碼建構的么正空時調變比較………………………45
4.4 區塊錯誤率…………………………………………………53
第五章 結論
參考文獻…………………………………………………56
參考文獻 [1] S.M.Alamouuti,“A simple transmitter diversity scheme for wireless communications,”IEEE J.Areas Commum.vol. 16, 99.pp. 1451-1458, Oct. 1999.
[2] V.Tarokh,N.Seshadri and A.R.Calderbank,“Spac-time codes for high data rate wireless communication:Performance criterion and code construction,”IEEE Trans. Inform. Theory, vol. 44, pp. 744-765, Mar. 1998.
[3] B.M Hochwald, and T.L Marzetta,“Unitary space-time modulation for multiple-antenna communication in Rayleigh flat fading,”IEEE Trans.Inform.Theory., vol. 46, pp. 543-564, Mar 2000.
[4] B.M Hochwald, and T.L Marzetta,T.J Richardson,W.Sweldens,and R.Urbanke,“Systematic design of unitary space-time constellations,”IEEE Trans.Inform.Theory., vol. 46,no.6, pp. 1962-1973, Sept 2000.
[5] Ruey-Yi WEI,“Unitary space-time coded 8psk,” IEICE Trans. Commun., vol. 48, pp. 2041-2052, Dec. 2000.
[6] B.M. Hochwald, and W. Sweldens, “Differential unitary space-time modulation,” IEEE Trans. Commun. , vol. 48, pp. 2041-2052, Dec. 2000.
[7] S. M. Alamouti, “A simple transmitter diversity scheme for wireless communications,” IEEE J. Select. Areas Commun., vol. 16, pp. 1451–1458, Oct. 1998.
[8] H. Jafarkhani,“Space-time coding: theory and practice,”Cambridge University Press, 2005.
[9] Michael L. McCloud,Matthias Brehler,and Mahesh K. Varanasi,“Signal Design and Convolutional Coding for Noncoherent Space-Time Communication on the Block-Rayleigh-Fading Channel,”IEEE Trans.Inform.Theory.,vol.48, no.5, pp. 1186-1194, May 2002.
[10] P. Dayal, M. Brehler, and M. K. Varanasi, “Leveraging coherent space-time
codes for noncoherent communication via training,” IEEE Trans.
Inform. Theory, vol. 50, pp. 2058-2080, Sept. 2004.
[11] M. Brehler, and M. K. Varanasi, “Asynototic error probability analysis of quadratic receivers in Rayleigh fading channeks with applications to a unified analysis of coherent and noncoherent space-time receivers,” IEEE Trans.Inform. Theory, vol. 47, pp. 2383-2399, Sept. 2001.
[12] 謝佩恩,“以電腦搜索之短非同調區塊碼,”國立中央大學通訊工程學系,碩士論文, Jun. 2011.
指導教授 魏瑞益(Ruey-Yi Wei) 審核日期 2011-7-25 推文 plurk
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