Decision-Directed Channel Estimation for QAM-Modulated OFDM Systems

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概要

• 論文の詳細を見る

• When decision-directed channel estimation is used for QAM-OFDM systems, the optimal filter shape depends on the amplitudes of the modulated symbols as well as the channel characteristics. In this letter we propose a simple channel estimation method for multi-level-amplitude-modulated systems, which can effectively suppress the estimation variances with a small filter. Using the proposed method the implementation cost can be reduced and possibly better results might be obtained by avoiding the estimation bias due to large-sized filtering.

• 社団法人電子情報通信学会の論文
• 2003-04-01

著者

• RIM Minjoong

  Department of Information and Communication Engineering, Dongguk University

• Ahn Jaemin

  School Of Electrical And Computer Engineering Chungnam National University

• Kim Yeon-soo

  Access Network Lab. Korea Telecom.

• Rim Minjoong

  Department Of Information And Communication Engineering Dongguk University

関連論文

• A Random Access Scheme Robust to Timing Offsets for Uplink OFDMA Systems
• Decision-Directed Channel Estimation for QAM-Modulated OFDM Systems
• A Random Access Scheme Robust to Timing Offsets for Uplink OFDMA Systems
• Gated-CDMA : Frequency-Domain Equalization for CDMA Systems(Wireless Communication Technologies)
• Filter Size Determination of Moving Average Filters for Extended Differential Detection of OFDM Preambles
• Relationships between Diversity Techniques and Channel Coding Rates for OFDM Systems

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