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2008

A Composite LMMSE Channel Estimator for Spectrum-Efficient OFDM Transmit Diversity

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A Composite LMMSE Channel Estimator for Spectrum-Efficient OFDM Transmit Diversity
In this paper, we propose a subcarrier allocation method and a composite linear minimum mean square error (LMMSE) channel estimator to increase spectrum efficiency in orthogonal frequency division multiplexing (OFDM) transmit diversity. The pilot symbols for OFDM transmit (Alamouti) diversity are exclusively allocated in two OFDM symbols in different antennas, which causes serious degradation of spectrum efficiency. To reduce the number of pilot symbols, our subcarrier allocation method uses repetition-coded data symbols, and the proposed channel estimator maintains good bit error rate (BER) performance.
Jeong-Wook Seo, Won-Gi Jeon, Jong-Ho Paik, Minho J
Added 12 Dec 2010
Updated 12 Dec 2010
Type Journal
Year 2008
Where ITIIS
Authors Jeong-Wook Seo, Won-Gi Jeon, Jong-Ho Paik, Minho Jo, Dong Ku Kim
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