Adaptive sparse channel estimation for time-variant MIMO-OFDM systems

Guan Gui, Fumiyuki Adachi

研究成果: Conference contribution

9 引用 (Scopus)

抜粋

Accurate channel state information (CSI) is required for coherent detection in time-variant multiple-input multiple-output (MIMO) communication systems using orthogonal frequency division multiplexing (OFDM) modulation. One of low-complexity and stable adaptive channel estimation (ACE) approaches is the normalized least mean square (NLMS)-based ACE. However, it cannot exploit the inherent sparsity of MIMO channel which is characterized by a few dominant channel taps. In this paper, we propose two adaptive sparse channel estimation (ASCE) methods to take advantage of such sparse structure information for time-variant MIMO-OFDM systems. Unlike traditional NLMS-based method, two proposed methods are implemented by introducing sparse penalties to the cost function of NLMS algorithm. Computer simulations confirm obvious performance advantages of the proposed ASCEs over the traditional ACE.

元の言語English
ホスト出版物のタイトル2013 9th International Wireless Communications and Mobile Computing Conference, IWCMC 2013
ページ878-883
ページ数6
DOI
出版物ステータスPublished - 2013 9 16
イベント2013 9th International Wireless Communications and Mobile Computing Conference, IWCMC 2013 - Cagliari, Sardinia, Italy
継続期間: 2013 7 12013 7 5

出版物シリーズ

名前2013 9th International Wireless Communications and Mobile Computing Conference, IWCMC 2013

Other

Other2013 9th International Wireless Communications and Mobile Computing Conference, IWCMC 2013
Italy
Cagliari, Sardinia
期間13/7/113/7/5

ASJC Scopus subject areas

  • Computer Networks and Communications

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  • これを引用

    Gui, G., & Adachi, F. (2013). Adaptive sparse channel estimation for time-variant MIMO-OFDM systems. : 2013 9th International Wireless Communications and Mobile Computing Conference, IWCMC 2013 (pp. 878-883). [6583673] (2013 9th International Wireless Communications and Mobile Computing Conference, IWCMC 2013). https://doi.org/10.1109/IWCMC.2013.6583673