NDLI: Low-complexity symbol-level combining for hybrid automatic repeat request in multiple-input multiple-output systems with linear detection

Content Provider	IET Digital Library
Author	Whang, Younghoon Park, Sangjoon Liu, Huaping
Abstract	In this study, the authors propose a low-complexity symbol-level combining (SLC) scheme for Chase combining-based hybrid automatic repeat request in multiple-input multiple-output systems with a linear receiver. In the proposed scheme, a subset of all row vectors in the channel matrix is selected and used for combining and detection of retransmitted symbols, where the Sherman–Morrison–Woodbury lemma is applied for the utilisation of each selected row vector. Therefore, compared with the existing SLC schemes using the entire channel matrix, the proposed scheme can have an advantage in computational complexity. Furthermore, they develop a row vector selection criterion for the proposed SLC scheme to calculate the amount of the signal-to-interference-noise ratio improvement based on the squared norm of each row vector with a significantly low complexity. Simulation results verify that compared with the existing SLC schemes, the proposed SLC scheme achieves similar or better error performance, while its computational complexity is lower or in the worst-case similar.
Starting Page	1131
Ending Page	1137
Page Count	7
ISSN	17518628
Volume Number	10
e-ISSN	17518636
Issue Number	Issue 10, Jul (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/10/10
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2015.1011
Journal	IET Communications
Publisher Date	2016-07-01
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Algebra Automatic Repeat Request Channel Matrix Chase Combining-based Hybrid Automatic Repeat Request Computational Complexity Error Performance Hybrid Automatic Repeat Request Linear Detection Linear Receiver Low-complexity SLC Scheme Low-complexity Symbol-level Combining Low-complexity Symbol-level Combining Scheme Matrix Algebra MIMO Communication Multiple-input-multiple-output System Protocol Radio Link And Equipment Retransmitted Symbol Detection Row Vector Selection Criterion Row Vector-squared Norm Selected Row Vector Sherman-Morrison-Woodbury Lemma Signal Detection Signal-to-interference-noise Ratio Improvement
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
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