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Linearly time-varying channel estimation and training power allocation for OFDM/MIMO systems using superimposed training |
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| Authors: | ZHANG Han DAI XianHua & Pan DaRu School of Physics Telecommunication Engineering South China Normal University Guangzhou China |
| Affiliation: | ZHANG Han 1,DAI XianHua 2 & Pan DaRu 1 1 School of Physics and Telecommunication Engineering,South China Normal University,Guangzhou 510006,China,2 Department of Information Science and Technology,SUN Yat-sen University,Guangzhou 510026 |
| Abstract: | We address the problem of estimating the linearly time-varying (LTV) channel of orthogonal frequency division multiplexing (OFDM)/multiple-input multiple-output (MIMO) systems using superimposed training (ST).The LTV channel is modeled by truncated discrete Fourier bases.Based on this model,a two-step approach is adopted to estimate the LTV channel over multiple OFDM symbols.We also present performance analysis of the channel estimation and derive a closed-form expression for the channel estimation variance... |
| Keywords: | OFDM/MIMO systems linearly time-varying channel estimation superimposed training training power allocation |
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