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Tensor-Based Low-Complexity Channel Estimation for mmWave Massive MIMO-OTFS Systems
Wu, Xianda; Ma SD(馬少丹); Yang, Xi
2020-09
Source PublicationJournal of Communications and Information Networks
Volume5Issue:3Pages:324-334
Abstract

Orthogonal time frequency space (OTFS) modulation, collaborated with millimeter-wave (mmWave) massive multiple-input-multiple-output (MIMO), is a promising technology for next generation wireless communications in high mobility scenarios. However, one of the main challenges for mmWave massive MIMO-OTFS systems is the enormous computational complexity of channel estimation incurred by the huge OTFS symbol size and the large number of antennas. To address this issue, in this paper, a tensor-based orthogonal matching pursuit (OMP) channel estimation algorithm is proposed by exploiting the channel sparsity in the delayDoppler-angle domain. In particular, we firstly propose a novel pilot design for the OTFS symbol structure in the frequency-time domain. Then, based on the proposed pilot structure, we formulate the channel estimation as a sparse signal recovery problem, and the tensor decomposition and parallel support detection are introduced into the tensor-based OMP algorithm to reduce the signal processing dimension significantly. Numerical simulations are performed to verify the superiority and the robustness of the proposed tensor-based OMP algorithm.

KeywordOtfs, Millimeter-wave, Massive Mimo, Channel Estimation, Compressed Sensing
URLView the original
Indexed ByEI
Language英語English
Document TypeJournal article
CollectionDEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
Faculty of Science and Technology
THE STATE KEY LABORATORY OF INTERNET OF THINGS FOR SMART CITY (UNIVERSITY OF MACAU)
AffiliationState Key Laboratory of Internet of Things for Smart City, University of Macau, Macao 999078, China
First Author AffilicationUniversity of Macau
Recommended Citation
GB/T 7714
Wu, Xianda,Ma SD,Yang, Xi. Tensor-Based Low-Complexity Channel Estimation for mmWave Massive MIMO-OTFS Systems[J]. Journal of Communications and Information Networks,2020,5(3):324-334.
APA Wu, Xianda,Ma SD,&Yang, Xi.(2020).Tensor-Based Low-Complexity Channel Estimation for mmWave Massive MIMO-OTFS Systems.Journal of Communications and Information Networks,5(3),324-334.
MLA Wu, Xianda,et al."Tensor-Based Low-Complexity Channel Estimation for mmWave Massive MIMO-OTFS Systems".Journal of Communications and Information Networks 5.3(2020):324-334.
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