Low-complexity channel tracking in fast-varying MIMO environments

Ruoxu Wang; Wei Peng; Tao Jiang; Fumiyuki Adachi

doi:10.1109/IWCMC.2019.8766471

Low-complexity channel tracking in fast-varying MIMO environments

Ruoxu Wang, Wei Peng, Tao Jiang, Fumiyuki Adachi

Research Organization of Electrical Communication (ROEC)

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

In this paper, channel tracking in fast-varying MIMO environments is considered. Firstly, the high-dimension channel vector of each user is decomposed into a semi-static factor load matrix (FLM) and a low-dimension factor coefficient vector (FCV). Thereby, channel tracking is replaced by the infrequent FLM tracking and low-complexity FCV tracking. Secondly, channel variations are represented by local polynomial modeling, based on which a recursive least square (RLS) algorithm with optimal forgetting factor (FF) is proposed. It is verified that the proposed algorithm has higher accuracy, better tracking ability and lower computational complexity than the existing methods.

Original language	English
Title of host publication	2019 15th International Wireless Communications and Mobile Computing Conference, IWCMC 2019
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	1339-1343
Number of pages	5
ISBN (Electronic)	9781538677476
DOIs	https://doi.org/10.1109/IWCMC.2019.8766471
Publication status	Published - 2019 Jun
Event	15th IEEE International Wireless Communications and Mobile Computing Conference, IWCMC 2019 - Tangier, Morocco Duration: 2019 Jun 24 → 2019 Jun 28

Publication series

Name	2019 15th International Wireless Communications and Mobile Computing Conference, IWCMC 2019

Conference

Conference	15th IEEE International Wireless Communications and Mobile Computing Conference, IWCMC 2019
Country	Morocco
City	Tangier
Period	19/6/24 → 19/6/28

Keywords

Channel tracking
Fast-varying
Low-complexity
MIMO
Optimal forgetting factor
Recursive least square

ASJC Scopus subject areas

Hardware and Architecture
Computer Networks and Communications
Safety, Risk, Reliability and Quality

Access to Document

10.1109/IWCMC.2019.8766471

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Cite this

Wang, R., Peng, W., Jiang, T., & Adachi, F. (2019). Low-complexity channel tracking in fast-varying MIMO environments. In 2019 15th International Wireless Communications and Mobile Computing Conference, IWCMC 2019 (pp. 1339-1343). [8766471] (2019 15th International Wireless Communications and Mobile Computing Conference, IWCMC 2019). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/IWCMC.2019.8766471

Low-complexity channel tracking in fast-varying MIMO environments. / Wang, Ruoxu; Peng, Wei; Jiang, Tao; Adachi, Fumiyuki.

2019 15th International Wireless Communications and Mobile Computing Conference, IWCMC 2019. Institute of Electrical and Electronics Engineers Inc., 2019. p. 1339-1343 8766471 (2019 15th International Wireless Communications and Mobile Computing Conference, IWCMC 2019).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Wang, R, Peng, W, Jiang, T & Adachi, F 2019, Low-complexity channel tracking in fast-varying MIMO environments. in 2019 15th International Wireless Communications and Mobile Computing Conference, IWCMC 2019., 8766471, 2019 15th International Wireless Communications and Mobile Computing Conference, IWCMC 2019, Institute of Electrical and Electronics Engineers Inc., pp. 1339-1343, 15th IEEE International Wireless Communications and Mobile Computing Conference, IWCMC 2019, Tangier, Morocco, 19/6/24. https://doi.org/10.1109/IWCMC.2019.8766471

Wang R, Peng W, Jiang T, Adachi F. Low-complexity channel tracking in fast-varying MIMO environments. In 2019 15th International Wireless Communications and Mobile Computing Conference, IWCMC 2019. Institute of Electrical and Electronics Engineers Inc. 2019. p. 1339-1343. 8766471. (2019 15th International Wireless Communications and Mobile Computing Conference, IWCMC 2019). https://doi.org/10.1109/IWCMC.2019.8766471

Wang, Ruoxu ; Peng, Wei ; Jiang, Tao ; Adachi, Fumiyuki. / Low-complexity channel tracking in fast-varying MIMO environments. 2019 15th International Wireless Communications and Mobile Computing Conference, IWCMC 2019. Institute of Electrical and Electronics Engineers Inc., 2019. pp. 1339-1343 (2019 15th International Wireless Communications and Mobile Computing Conference, IWCMC 2019).

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abstract = "In this paper, channel tracking in fast-varying MIMO environments is considered. Firstly, the high-dimension channel vector of each user is decomposed into a semi-static factor load matrix (FLM) and a low-dimension factor coefficient vector (FCV). Thereby, channel tracking is replaced by the infrequent FLM tracking and low-complexity FCV tracking. Secondly, channel variations are represented by local polynomial modeling, based on which a recursive least square (RLS) algorithm with optimal forgetting factor (FF) is proposed. It is verified that the proposed algorithm has higher accuracy, better tracking ability and lower computational complexity than the existing methods.",

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note = "Funding Information: This work is supported in part by National Science Foundation of China with grant numbers 61771214, 61771216 and 61531011, National Science Foundation for Distinguished Young Scholars of China with grant number 61325004, the Innovative Project of Shenzhen city in China with grant number JCYJ20170307171931096, the open research fund of National Mobile Communications Research Laboratory, Southeast University with grant number 2018D10, and the Fundamental Research Funds for the Central Universities with Grant number 2015ZDTD012.; 15th IEEE International Wireless Communications and Mobile Computing Conference, IWCMC 2019 ; Conference date: 24-06-2019 Through 28-06-2019",

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