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- W1990140599 abstract "Orthogonal frequency division multiplexing (OFDM) is one of the promising transmission techniques for next generation mobile communication systems. Accurate channel estimation is essential for coherent OFDM signal transmission. So far, many pilot-assisted channel estimation schemes have been proposed. In the case of packet transmission, each received packet can be repeatedly processed by decision feedback to improve the channel estimation accuracy, resulting in a decision directed block iterative channel estimation (DD-BICE). However, decision feedback of erroneously detected data symbols degrades the packet error rate (PER) or bit error rate (BER) performance. In this paper, theoretical analysis is presented for the DD-BICE taking into account the decision feedback errors assuming quadrature phase shift keying (QPSK) data modulation. A 2-dimensional (2D) averaging filter is used for reducing the negative impact of decision feedback errors. The impacts of 2D averaging filter and antenna diversity reception are discussed and the validity of the theoretical analysis is confirmed by computer simulation." @default.
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- W1990140599 date "2007-07-01" @default.
- W1990140599 modified "2023-09-27" @default.
- W1990140599 title "Theoretical Analysis of Decision Directed Block Iterative Channel Estimation for OFDM Mobile Radio" @default.
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- W1990140599 doi "https://doi.org/10.1093/ietcom/e90-b.7.1764" @default.
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