Time-Domain Estimation of Time-Varying Channels in OFDM Systems
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概要
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This letter deals with the time-domain estimation of time-varying channels in orthogonal frequency-division multiplexing (OFDM) systems. The general complex exponential basis expansion model (GCE-BEM) is used to capture the time variation of the channel within an OFDM block. The design criterion of optimal training for OFDM systems in time-varying channels is derived. This optimal training enables the complete elimination of the interference from data symbols and minimizes the noise effect on channel estimation. The design criterion can be used for both pilot symbol aided modulation (PASM) and superimposed training OFDM systems over time-varying channels.
- 2010-01-01
著者
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Chen Shaoping
Department Of Electronics And Information Engineering South-central University For Nationalities
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Chen Shaoping
Department Of Chemistry Fujian Normal University
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Rao Wengui
Department Of Electronics And Information Engineering South-central University For Nationalities
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DAI Guangfa
Department of Electronics and Information Engineering, South-Central University for Nationalities
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Dai Guangfa
Department Of Electronics And Information Engineering South-central University For Nationalities
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