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http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/61042
標題: | 多輸入多輸出正交分頻多工系統下利用少數接收區塊且基於子空間方法之盲通道估測 Subspace-based Blind Channel Estimation for Cyclic Prefixed MIMO-OFDM Systems Using Few Received Blocks |
作者: | Feng-Jie Yeh 葉逢傑 |
指導教授: | 蘇柏青 |
關鍵字: | 盲通道估測,多輸入多輸出正交分頻多工,子空間, Blind Channel Estimation,MIMO-OFDM,Subspace, |
出版年 : | 2013 |
學位: | 碩士 |
摘要: | In this thesis, we studied subspace (SS) based blind channel estimation methods for multi-input and multi-output (MIMO) cyclic prefixing (CP) based orthogonal frequency division multiplexing (OFDM) systems. Two categories of algorithms are proposed: the first one is based on composition of two consecutive blocks while the other on remodulation of these blocks. The proposed algorithms in both categories all require only few received blocks to satisfy the persistency of excitation (POE) criterion. Moreover, some particular algorithms in both categories, unlike a recently reported method that also uses few received blocks, do not require the number of receive antennas to be greater than that of transmit antennas. Simulation results demonstrate the capability of the proposed methods to perform blind channel estimation using few received blocks. Compared to multiple existing SS methods, significant performance improvements of these proposed methods are observed given the same amount of available received data in some common scenarios. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/61042 |
全文授權: | 有償授權 |
顯示於系所單位: | 電信工程學研究所 |
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