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Paper Abstract and Keywords
Presentation 2022-02-17 13:20
Channel Estimation to Mitigate Channel Aging in Massive MIMO with Pilot Contamination
Hiroki Hirose, Tomoaki Ohtsuki (Keio Univ.)
Abstract (in Japanese) (See Japanese page) 
(in English) In a massive multiple-input mltiple-output (MIMO) system based on time division duplex (TDD), the channel state information (CSI) between the base station (BS) and the user terminal (UT) is required. Due to Doppler shift, the fluctuations of the channel between the BS and the UT causes differences of the channel between the channel estimation and channel utilization, which is an issue called channel aging. In this report, we propose a data-aided channel estimation method based on deep learning to mitigate the effect of channel aging in a massive MIMO system with pilot contamination. After signal detection using the estimated channel obtained from the received signal in the pilot part, the detected symbol is regarded as a pilot and the channel for each time slot is estimated from the received signal in the data part. Through computer simulations, we show that the proposed method improves the channel estimation accuracy compared with the deep learning-based channel estimation with received pilot signal and the interpolation method.
Keyword (in Japanese) (See Japanese page) 
(in English) Channel aging / Channel estimation / Convolutional neural network / Massive MIMO / Pilot contamination / / /  
Reference Info. ITE Tech. Rep., vol. 45, no. 5, BCT2021-12, pp. 13-16, Feb. 2021.
Paper # BCT2021-12 
Date of Issue 2021-02-11 (BCT) 
ISSN Print edition: ISSN 1342-6893  Online edition: ISSN 2424-1970
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Conference Information
Committee BCT IEEE-BT  
Conference Date 2021-02-18 - 2021-02-18 
Place (in Japanese) (See Japanese page) 
Place (in English) TBD 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To BCT 
Conference Code 2021-02-BCT-BT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Channel Estimation to Mitigate Channel Aging in Massive MIMO with Pilot Contamination 
Sub Title (in English)  
Keyword(1) Channel aging  
Keyword(2) Channel estimation  
Keyword(3) Convolutional neural network  
Keyword(4) Massive MIMO  
Keyword(5) Pilot contamination  
1st Author's Name Hiroki Hirose  
1st Author's Affiliation Keio University (Keio Univ.)
2nd Author's Name Tomoaki Ohtsuki  
2nd Author's Affiliation Keio University (Keio Univ.)
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Speaker Author-1 
Date Time 2022-02-17 13:20:00 
Presentation Time 20 minutes 
Registration for BCT 
Paper # BCT2021-12 
Volume (vol) vol.45 
Number (no) no.5 
Page pp.13-16 
Date of Issue 2021-02-11 (BCT) 

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