NDLI: Soft decision-directed channel estimation for multiuser MIMO systems

Content Provider	IEEE Xplore Digital Library
Author	Sunho Park Jun Won Choi Keonkook Lee Byonghyo Shim
Copyright Year	2015
Description	Author affiliation: Electr.-Bio Eng. Dept., Hanyang Univ., Seoul, South Korea (Jun Won Choi) \|\| INMC & Sch. of Electr. & Comput. Eng., Seoul Nat. Univ., Seoul, South Korea (Sunho Park; Byonghyo Shim) \|\| Commun. Res. Team, Samsung Electron. Co., Ltd., Suwon, South Korea (Keonkook Lee)
Abstract	Multiuser multiple-input multiple-output (MU-MIMO) transmission technique based on orthogonal frequency division multiplexing (OFDM) system has been received great deal of attention in recent years due to its potential higher spectral efficiency. However, because of the coarse knowledge of channel state information at the transmitter (CSIT), co-scheduled mobile users may suffer large residual multiuser interference in MU-MIMO system. In this paper, we propose a new channel estimation technique using virtual pilot signals for the MU-MIMO OFDM systems. In a nutshell, we choose reliable data tones from both desired and interfering signals as virtual pilot signal and improves the channel estimation quality using iterative detection and decoding (IDD) scheme. We show that the proposed method achieves substantial performance gain over conventional approaches employing single user detection or multiuser detection.
Starting Page	95
Ending Page	99
File Size	276284
Page Count	5
File Format	PDF
e-ISBN	9781467367820
DOI	10.1109/PIMRC.2015.7343275
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-08-30
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Channel estimation OFDM Interference MIMO Mobile communication Receivers Antennas
Content Type	Text
Resource Type	Article

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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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