Weighted TSVR Based Nonlinear Channel Frequency Response Estimation for MIMO-OFDM System
A channel frequency response estimation method based on weighted twin support vector regression (TSVR) for pilot-aided multi-input multi-output (MIMO) orthogonal frequency division multiplexing (OFDM) system is proposed in this work. Nonlinearity of channel in wireless communication system is consid...
Main Authors: | , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
IEEE
2020-01-01
|
Series: | IEEE Access |
Subjects: | |
Online Access: | https://ieeexplore.ieee.org/document/9298780/ |
id |
doaj-8633d4b69fdd43c289e380bce91c4cbe |
---|---|
record_format |
Article |
spelling |
doaj-8633d4b69fdd43c289e380bce91c4cbe2021-03-30T03:42:08ZengIEEEIEEE Access2169-35362020-01-01822428322429110.1109/ACCESS.2020.30457069298780Weighted TSVR Based Nonlinear Channel Frequency Response Estimation for MIMO-OFDM SystemShuo Li0https://orcid.org/0000-0002-5550-2097Weimin Lei1https://orcid.org/0000-0003-1877-7355Wei Zhang2https://orcid.org/0000-0001-7446-4025Xiaoyu Wang3https://orcid.org/0000-0001-5526-9320Lidong Wang4https://orcid.org/0000-0003-3923-849XSchool of Computer Science and Engineering, Northeastern University, Shenyang, ChinaSchool of Computer Science and Engineering, Northeastern University, Shenyang, ChinaSchool of Computer Science and Engineering, Northeastern University, Shenyang, ChinaSchool of Electronic and Information Engineering, University of Science and Technology Liaoning, Anshan, ChinaSchool of Electronic and Information Engineering, University of Science and Technology Liaoning, Anshan, ChinaA channel frequency response estimation method based on weighted twin support vector regression (TSVR) for pilot-aided multi-input multi-output (MIMO) orthogonal frequency division multiplexing (OFDM) system is proposed in this work. Nonlinearity of channel in wireless communication system is considered. The channel is fading in time domain produced by Doppler effect and in frequency domain by propagation multipath. An improved TSVR-weighted TSVR is adopted to estimate channel parameters in MIMO-OFDM system. The weights obtained by wavelet transform method are used to improve the regression performance of TSVR. The characteristic of the proposed algorithm is that different training samples are given weights calculated according to the distance from the samples to the mean values filtered by wavelet transform method. Due to the regression characteristics of TSVR, the channel frequency response estimation algorithm proposed in this work has good estimation performance and anti noise ability. Experimental results show that compared with the classical pilot aided channel estimation method, the proposed algorithm has better performance in estimating mean square error.https://ieeexplore.ieee.org/document/9298780/Channel estimationwavelet transformMIMOOFDMTSVR |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Shuo Li Weimin Lei Wei Zhang Xiaoyu Wang Lidong Wang |
spellingShingle |
Shuo Li Weimin Lei Wei Zhang Xiaoyu Wang Lidong Wang Weighted TSVR Based Nonlinear Channel Frequency Response Estimation for MIMO-OFDM System IEEE Access Channel estimation wavelet transform MIMO OFDM TSVR |
author_facet |
Shuo Li Weimin Lei Wei Zhang Xiaoyu Wang Lidong Wang |
author_sort |
Shuo Li |
title |
Weighted TSVR Based Nonlinear Channel Frequency Response Estimation for MIMO-OFDM System |
title_short |
Weighted TSVR Based Nonlinear Channel Frequency Response Estimation for MIMO-OFDM System |
title_full |
Weighted TSVR Based Nonlinear Channel Frequency Response Estimation for MIMO-OFDM System |
title_fullStr |
Weighted TSVR Based Nonlinear Channel Frequency Response Estimation for MIMO-OFDM System |
title_full_unstemmed |
Weighted TSVR Based Nonlinear Channel Frequency Response Estimation for MIMO-OFDM System |
title_sort |
weighted tsvr based nonlinear channel frequency response estimation for mimo-ofdm system |
publisher |
IEEE |
series |
IEEE Access |
issn |
2169-3536 |
publishDate |
2020-01-01 |
description |
A channel frequency response estimation method based on weighted twin support vector regression (TSVR) for pilot-aided multi-input multi-output (MIMO) orthogonal frequency division multiplexing (OFDM) system is proposed in this work. Nonlinearity of channel in wireless communication system is considered. The channel is fading in time domain produced by Doppler effect and in frequency domain by propagation multipath. An improved TSVR-weighted TSVR is adopted to estimate channel parameters in MIMO-OFDM system. The weights obtained by wavelet transform method are used to improve the regression performance of TSVR. The characteristic of the proposed algorithm is that different training samples are given weights calculated according to the distance from the samples to the mean values filtered by wavelet transform method. Due to the regression characteristics of TSVR, the channel frequency response estimation algorithm proposed in this work has good estimation performance and anti noise ability. Experimental results show that compared with the classical pilot aided channel estimation method, the proposed algorithm has better performance in estimating mean square error. |
topic |
Channel estimation wavelet transform MIMO OFDM TSVR |
url |
https://ieeexplore.ieee.org/document/9298780/ |
work_keys_str_mv |
AT shuoli weightedtsvrbasednonlinearchannelfrequencyresponseestimationformimoofdmsystem AT weiminlei weightedtsvrbasednonlinearchannelfrequencyresponseestimationformimoofdmsystem AT weizhang weightedtsvrbasednonlinearchannelfrequencyresponseestimationformimoofdmsystem AT xiaoyuwang weightedtsvrbasednonlinearchannelfrequencyresponseestimationformimoofdmsystem AT lidongwang weightedtsvrbasednonlinearchannelfrequencyresponseestimationformimoofdmsystem |
_version_ |
1724182969534382080 |