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A New Approach to Semi-blind Channel Estimation for MIMO Wireless Communication System

by Gajanan R Patil, Vishwanath K Kokate
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International Journal of Computer Applications
Foundation of Computer Science (FCS), NY, USA
Volume 99 - Number 3
Year of Publication: 2014
Authors: Gajanan R Patil, Vishwanath K Kokate
10.5120/17350-7823

Gajanan R Patil, Vishwanath K Kokate . A New Approach to Semi-blind Channel Estimation for MIMO Wireless Communication System. International Journal of Computer Applications. 99, 3 ( August 2014), 1-7. DOI=10.5120/17350-7823

@article{ 10.5120/17350-7823,
author = { Gajanan R Patil, Vishwanath K Kokate },
title = { A New Approach to Semi-blind Channel Estimation for MIMO Wireless Communication System },
journal = { International Journal of Computer Applications },
issue_date = { August 2014 },
volume = { 99 },
number = { 3 },
month = { August },
year = { 2014 },
issn = { 0975-8887 },
pages = { 1-7 },
numpages = {9},
url = { https://ijcaonline.org/archives/volume99/number3/17350-7823/ },
doi = { 10.5120/17350-7823 },
publisher = {Foundation of Computer Science (FCS), NY, USA},
address = {New York, USA}
}
%0 Journal Article
%1 2024-02-06T22:27:11.494105+05:30
%A Gajanan R Patil
%A Vishwanath K Kokate
%T A New Approach to Semi-blind Channel Estimation for MIMO Wireless Communication System
%J International Journal of Computer Applications
%@ 0975-8887
%V 99
%N 3
%P 1-7
%D 2014
%I Foundation of Computer Science (FCS), NY, USA
Abstract

A new approach to Semi-Blind Channel Estimation (SBCE) technique for Multiple Input Multiple Output (MIMO) wireless communication system is proposed. It combines the Least Square (LS) and Minimum Mean Square Error (MMSE) Training Based Channel Estimation (TBCE) scheme with whitening rotation based orthogonal pilot maximum likelihood (OPML) semi-blind channel estimation (SBCE) scheme. In the new approach the whitening matrix is obtained from blind data and rotation matrix is obtained from LS estimated channel. Another modification suggested in this contribution is the use of whitening matrix for MMSE estimate. The channel correlation matrix required for MMSE estimation can be obtained based on latest channel statistics and hence is more reliable. At high SNR this scheme offers better performance than the OPML SBCE method. These advantages are achieved at the cost of negligible reduction in performance in low SNR regime.

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Index Terms

Computer Science
Information Sciences

Keywords

Training Based Channel Estimation Semi-blind Channel Estimation Least Square Minimum Mean Square Error Multiple Input Multiple Output Singular Value Decomposition Spatial Diversity Spatial Multiplexing

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