研究生: |
謝金成 Chin-Cheng Hsieh |
---|---|
論文名稱: |
在劃分理論輔助下之分碼多重接取系統分析 Performance analysis of CDMA with the aid of partition theory |
指導教授: |
黃建華
Chien-Hwa Hwang 鄭傑 Jay Cheng |
口試委員: | |
學位類別: |
碩士 Master |
系所名稱: |
電機資訊學院 - 電機工程學系 Department of Electrical Engineering |
論文出版年: | 2005 |
畢業學年度: | 93 |
語文別: | 中文 |
論文頁數: | 52 |
中文關鍵詞: | 隨機矩陣 、劃分理論 |
外文關鍵詞: | random matrix, partition theory |
相關次數: | 點閱:3 下載:0 |
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本論文是利用隨機矩陣定理來解決CDMA系統相關性係數矩陣(correlation matrix)的分析,並且將CDMA系統分為同步及不同步情況下,矩陣大小為無限大時跟不是無限大時差多少,以及特徵值動差之間的差異性。論文中探討了多種隨機矩陣模組之推導以及特性分析,並且對於同步CDMA系統與非同步CDMA系統做了更近一步非漸近和漸近分佈下系統架構建立以及相關性係數矩陣特性上的探討。本論文中也提及一些常利用在各個領域的隨機矩陣表示法,並且也列出隨機矩陣特性分析,且利用模擬方式圖形化觀察這些隨機矩陣的相關特性。
利用劃分理論來表示資料位元-同步系統相關性係數矩陣特性為漸近與非漸近時之特徵值動差,利用此特徵值動差代表此系統的性能,並且以圖示化的方式來解決CDMA系統矩陣特性的分析。將劃分理論圖形化表示之後將能更容易區分矩陣大小,對於特性值動差的影響,並且利用公式法方式求得決CDMA系統相關性係數矩陣的特性值動差,並且探討矩陣大小為有限大以及無限時的差異點。在本論文中也提到另外更為簡易利用圖形化求得特性值動差的方法。由此方式可求得CDMA系統的特性分析,並且對照第二章所介紹,由隨機矩陣求出的CDMA系統特性,則表示可利用劃分理論分析,來增加了一種分析性能方式,在分析漸進定理以及非漸進定理上,且更能簡易求出系統的性能。
The purpose of this paper is to analyze CDMA system correlation matrix with random matrix theorem. In both synchronous and asynchronous cases, we compare the CDMA systems of different eigenvalue moments, and difference between matrix sizes of infinite and non-infinite. We represent the performance of the system with the partition theorem. Furthermore, we analyse the characteristics of CDMA system matrix with graphical method. Compared to the results obtained from chapter 2. Thus, we increase a new method to analyze the performance, and it is simpler to be obtained.
Partition theorem is used to show the difference in eigenvalues of symbol- synchronous correlation matrix of asymptotic and non-asympotic. Eigenvlaue moments represent the efficiency of the system and diagrams are presented to visualize the characteristics of the CDMA matrix. The characteristic analysis obtained is then compared with CDMA system characteristics of the random matrix. Thus, this shows that with the aid of partition theorem, a better method to analyze system is introduced.
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