Robust Channel Estimation against Band Edge Effect in LTE Advanced Systems
碩士 === 國立臺灣大學 === 電信工程學研究所 === 100 === Channel estimation is critical to receiver performance in most wireless communication systems. 3GPP Long term Evolution (LTE) represents a major advance in cellular technology. In this paper, we explain how to exploit the reference signals to estimate the chann...
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ndltd-TW-100NTU054351272015-10-13T21:50:44Z http://ndltd.ncl.edu.tw/handle/49986289712442549818 Robust Channel Estimation against Band Edge Effect in LTE Advanced Systems 長期演進技術中抵抗邊界效應的通道估測 Chi-Fong Li 李其峰 碩士 國立臺灣大學 電信工程學研究所 100 Channel estimation is critical to receiver performance in most wireless communication systems. 3GPP Long term Evolution (LTE) represents a major advance in cellular technology. In this paper, we explain how to exploit the reference signals to estimate the channel frequency response in LTE downlink system. We will consider a common problem called edge effect during the process, it will decrease the estimation accuracy on band edge subcarriers. In order to alleviate this phenomenon, we propose a virtual subcarrier estimator to ease the influence. Furthermore, we adopt NLMS (Normalized Least Mean Square) to enhance the improvement of virtual subcarrier estimator. Finally, we discuss the case when MIMO scheme was adopted. In this situation spatial correlation between channels can be exploited to get an extra improvement on estimation accuracy. 張進福 2012 學位論文 ; thesis 91 zh-TW |
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碩士 === 國立臺灣大學 === 電信工程學研究所 === 100 === Channel estimation is critical to receiver performance in most wireless communication systems. 3GPP Long term Evolution (LTE) represents a major advance in cellular technology. In this paper, we explain how to exploit the reference signals to estimate the channel frequency response in LTE downlink system. We will consider a common problem called edge effect during the process, it will decrease the estimation accuracy on band edge subcarriers. In order to alleviate this phenomenon, we propose a virtual subcarrier estimator to ease the influence. Furthermore, we adopt NLMS (Normalized Least Mean Square) to enhance the improvement of virtual subcarrier estimator. Finally, we discuss the case when MIMO scheme was adopted. In this situation spatial correlation between channels can be exploited to get an extra improvement on estimation accuracy.
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author2 |
張進福 |
author_facet |
張進福 Chi-Fong Li 李其峰 |
author |
Chi-Fong Li 李其峰 |
spellingShingle |
Chi-Fong Li 李其峰 Robust Channel Estimation against Band Edge Effect in LTE Advanced Systems |
author_sort |
Chi-Fong Li |
title |
Robust Channel Estimation against Band Edge Effect in LTE Advanced Systems |
title_short |
Robust Channel Estimation against Band Edge Effect in LTE Advanced Systems |
title_full |
Robust Channel Estimation against Band Edge Effect in LTE Advanced Systems |
title_fullStr |
Robust Channel Estimation against Band Edge Effect in LTE Advanced Systems |
title_full_unstemmed |
Robust Channel Estimation against Band Edge Effect in LTE Advanced Systems |
title_sort |
robust channel estimation against band edge effect in lte advanced systems |
publishDate |
2012 |
url |
http://ndltd.ncl.edu.tw/handle/49986289712442549818 |
work_keys_str_mv |
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