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頁籤選單縮合
題 名 | 利用特徵值分解求兩種不同等化器之比較=Comparison of Two Kinds of Equalizers Based on Eigen-value Decomposition |
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作 者 | 張豫虎; 林鼎然; 陳威宇; | 書刊名 | 中原學報 |
卷 期 | 33:3 民94.09 |
頁 次 | 頁533-543 |
分類號 | 448.6 |
關鍵詞 | 等化器; Blind equalizer; Zero-forcing; Eigen decomposition; |
語 文 | 中文(Chinese) |
中文摘要 | 在現今的通訊系統領域下,利用盲目通道辨識樂等化的方式變得越來越重要,近年來有不少創新的方法皮提出來。此論文提出利用特徵值分解(Eigen-decomposition)方式求出等化器之係數,利用經白化(whitening)之接收訊號矩陣對其作奇異侓分解而找到相對之奇異向量,對應之強制歸零(zero-forcing)等化器即為此奇異向量與白化矩陣之乘積。我們可以證明將只有一個零向量(null vector)存在。如此,我們便可以將不同延遲時間的等化器同時求出。 |
英文摘要 | Using blind channel identification and equalization method become more and more important in communication system nowadays. Several innovative methods are published in the modern years. In this paper, we can find autocorrelation matrix of received signals by using Eigen-decomposition method. Then, we can form a whitening matrix to be multiplied b received signals. Under the zero-forcing condition, we can get the specific relations between all of different time-delay equalizers by analyzing the matrix which was the product of the whitening matrix and received signals. We will form a new matrix by recombining these specific relations, and then perform singular value decomposition on the new matrix. We can prove that there is only one null vector exists. Therefore, all possible delay equalizers can be computed simultaneously. |
本系統中英文摘要資訊取自各篇刊載內容。