Signal Recovery for Multiuser MIMO-OFDM Systems Using a Combination of Blind Source Separation and Semi-blind Technique

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概要

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• This paper proposes a novel signal recovery technique for multiuser multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems using a combination of blind source separation(BSS) and semi-blind method from the frequency bin(FB) viewpoint. A pre-filter is applied on each user signal before OFDM signal. The pre-filter converts user signals into transmitted signals which possess a correlation structure. At the receiver, we firstly recover signals using existing BSS algorithm at the first FB and second FB in OFDM systems, and resolve the indeterminacies nature of BSS algorithm employing a few pilot symbols at the first FB. Then separated signals at the second FB can be utilized as reference signals for the recovery of signals at next adjacent FB due to the correlation structure of transmitted signals. Also the validity of the proposed method is demonstrated by computer simulations.

• 2006-01-01

著者

• GUO Bin

  The authors are with the Graduate School of Engineering, Osaka Prefecture University

• YAMASHITA Katsumi

  The authors are with the Graduate School of Engineering, Osaka Prefecture University

• Yamashita Katsumi

  The Authors Are With The Graduate School Of Engineering Osaka Prefecture University

• Guo Bin

  The Authors Are With The Graduate School Of Engineering Osaka Prefecture University

関連論文

• Signal Recovery for Multiuser MIMO-OFDM Systems Using a Combination of Blind Source Separation and Semi-blind Technique
• A Novel Channel Estimation and Equalization for MIMO-OFDM Systems
• Channel Estimation for Mobile OFDM Systems Using CR Splines

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