NDLI: Joint interpolation for LTE downlink channel estimation in very high-mobility environments with support vector machine regression

Content Provider	IET Digital Library
Author	Charrada, Anis Samet, Abdelaziz
Abstract	In this study, the estimation of fast-fading long term evolution (LTE) downlink channels in high-speed applications of LTE advanced is investigated by the authors. A robust channel estimation and interpolation algorithm is essential in order to adequately track the fast time-varying channel response. In this contribution, the multipath fast-fading channel is modelled as a discrete, tapped-delay and finite impulse response filter. Using support vector machine regression (SVR), they develop an extended algorithm to jointly estimate the complex-valued channel frequency response in time and frequency domains, in the presence of fading and non-linear noise from the transmission of known pilot symbols. Furthermore, the channel estimates at the known pilot symbols are interpolated to the unknown data symbols by using the non-linear SVR approach exploiting kernel features. This study integrates both channel estimation at pilot symbols and interpolation at data symbol into the complex SVR interpolation method. The bit error rate and mean square error performances of the authors’ fast-fading channel estimation scheme is demonstrated via simulation for LTE downlink with 64-QAM modulation and 500 km/h velocity under non-linearities.
Starting Page	2435
Ending Page	2444
Page Count	10
ISSN	17518628
Volume Number	10
e-ISSN	17518636
Issue Number	Issue 17, Nov (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/10/17
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2016.0132
Journal	IET Communications
Publisher Date	2016-11-24
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	64-QAM Modulation Bit Error Rate Channel Estimation Communication Channel Equalisation And Identification Communication Computing Complex SVR Interpolation Method Data Symbol Digital Signal Processing Discrete Filter Error Statistics Fast Time-varying Channel Response Fast-fading Long Term Evolution Downlink Channel Estimation Fast-fading LTE Downlink Channel Estimation Filtering Method in Signal Processing Filtering Theory Finite Impulse Response Filter FIR Filter Frequency Domain Interpolation Interpolation And Function Approximation Joint Complex-valued Channel Frequency Response Estimation Joint Interpolation Algorithm Kernel Feature Knowledge Engineering Technique Known Pilot Symbol Transmission Long Term Evolution Mean Square Error Method Mobile Radio Mobile Radio System Mobility Management Multipath Fast-fading Channel Modeling Network Management Nonlinear Noise Nonlinear SVR Approach Numerical Analysis Regression Analysis Statistics Support Vector Machine Support Vector Machine Regression Tapped-delay Filter Telecommunication Computing Time Domain Very High-mobility Environments
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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