NDLI: High-throughput signal detection based on fast matrix inversion updates for uplink massive multiuser multiple-input multi-output systems

Content Provider	IET Digital Library
Author	Deng, Qian Guo, Li Dong, Chao Lin, Jiaru Meng, Dedan Chen, Xueyan
Abstract	In this study, zero-forcing matrix decomposition polynomial expansion update (ZF-MDPE-update) and zero-forcing successive over relaxation update (ZF-SOR-update) algorithms are proposed to update a zero-forcing detector quickly without requiring complicated matrix inversion recomputations when massive multiple-input multi-output systems channel estimates contain a small perturbation. To further accelerate the convergence rate and to maximise date throughput, a new method of calculating the optimal coefficients for the matrix polynomial that can significantly improve the accuracy of the initial input inverse matrix approximation is considered by the ZF-MDPE-update algorithm. On the other hand, the ZF-SOR-update algorithm with an optimal iterative initial solution and an optimal relaxation parameter is devised, which achieves excellent detection performance. Results demonstrate that when the ratio of base station (BS) antennas to user terminal (UT) antennas, β , is small, the proposed update detection algorithms, with only a few operations, achieve a significant improvement in the average achievable rate of the UTs compared to the recently proposed update algorithm. Therefore, more UTs can be served in a cell with a fixed number of BS antennas. At the same time, the authors' algorithms are shown to facilitate easy memory transfer and are low cost.
Starting Page	2228
Ending Page	2235
Page Count	8
ISSN	17518628
Volume Number	11
e-ISSN	17518636
Issue Number	Issue 14, Sep (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/11/14
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2016.0743
Journal	IET Communications
Publisher Date	2017-06-09
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Approximation Theory Base Station Antenna BS Antenna Channel Estimate Channel Estimation Communication Channel Equalisation And Identification Convergence Convergence Rate Detection Performance Fast Matrix Inversion Updates High-throughput Signal Detection Interpolation And Function Approximation Linear Algebra Matrix Approximation Matrix Decomposition Matrix Inversion Matrix Inversion Recomputations MIMO Communication Numerical Analysis Optimal Coefficient Optimal Iterative Initial Solution Optimal Relaxation Parameter Polynomial Matrix Radio Link And Equipment Signal Detection Small Perturbation Update Detection Algorithm Uplink Massive Multiuser Multiple-input Multi-output System User Terminal Antenna Zero-forcing Detector Zero-forcing Matrix Decomposition Polynomial Expansion Update Zero-forcing Successive Over Relaxation Update ZF-MDPE-update Algorithm ZF-SOR-update Algorithm
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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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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