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Effects of channel estimation error on array processing based QO-STBC coded OFDM systems

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4 Author(s)
Haixia Zhang ; WMCT Lab., Shandong Univ., Jinan ; Dongfeng Yuan ; Hsiao-Hwa Chen ; Nossek, J.A.

This letter addresses the issues on performance degradation caused by channel estimation error of quasiorthogonal space-time block (QO-STBC) coded OFDM systems employing array processing decoder. The least square (LS) channel estimator is employed to obtain the required channel state information (CSI). Taking mean square error (MSE) as a performance metric, we evaluate the performance of the LS estimator in MIMO-OFDM systems over frequency selective channels, and its impact on symbol error rate (SER) using both analysis and simulations.

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Communications Letters, IEEE  (Volume:13 ,  Issue: 4 )