On the Improvement and Verification of Channel Estimation in OFDM System using Software Defined Radio

碩士 === 國立中興大學 === 電機工程學系所 === 105 === In this thesis, for the real packet transmission to the simulation analysis, in the receiver signal processing channel estimation, proposed an algorithm to improve the channel status information. The Regularized LS estimation method combines the known channel in...

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Bibliographic Details
Main Authors: Wei-Husan Chang, 張瑋軒
Other Authors: 吳國光
Format: Others
Language:zh-TW
Published: 2017
Online Access:http://ndltd.ncl.edu.tw/handle/97853069397520745264
Description
Summary:碩士 === 國立中興大學 === 電機工程學系所 === 105 === In this thesis, for the real packet transmission to the simulation analysis, in the receiver signal processing channel estimation, proposed an algorithm to improve the channel status information. The Regularized LS estimation method combines the known channel information from pilot signal with the channel information and the previous channel information to produce an accurate channel estimation result than the standard LS estimation method. However, with the continuous increase in the transmission symbol, the use of preamble to produce more accurate channel information will be less and less. In the system simulation, when the channel correlation in time and LS channel estimation error, we know in the proposed method, we can according to the different SNR in the real transmission verification, get the required normalization parameter. When the packet is delivered in real, the best regularization parameters are selected according to the current environment to obtain a more accurate channel estimate for the transmission to enhance the system performance.