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Hwasun Yoo, Sunghwan Ong, Changeon Kang and Daesik Hong, "Prediction Based Direct Blind Decision Feedback Equalization", IEEE ICASSP, May 2002
[IEEE ICASSP]
조회 54663
Status : | Presented |
---|---|
Date : | 2002-05 |
Title : | Prediction Based Direct Blind Decision Feedback Equalization |
Authors : | Hwasun Yoo, Sunghwan Ong, Changeon Kang and Daesik Hong |
Conference : | IEEE International Conference on Acoustics, Speech, and Signal Processing |
Abstract : | We propose a blind decision feedback equalizer (DFE) using second-order statistics (SOS). The proposed blind decision feedback equalization technique does not require channel estimation and obtains the equalizer coefficients directly from SOS of the received signals. In the case of SIMO channels, an autoregressive (AR) process is also a moving average (MA) process. Therefore, the output of the optimized multistep prediction error filter (PEF) can be represented as a product of the channel partial impulse response and the transmitted sequence. It is shown that a backward multistep PEF can be used as the feedforward filter (FFF) of the blind DFE. The corresponding feedback filter is obtained from the symbol-rate partial channel impulse response. The proposed algorithm has several advantages which is not shared with existing blind channel estimation techniques. The proposed DFE achieves the stable performance without exact channel order estimation. The performance of the equalizer can be improved by the nonlinearity of the decision device which alleviates the inaccuracy of the multistep PEF. |
URL : | http://Not Available |
Download : | http://mirinae.yonsei.ac.kr/?module=file...1f27449b7c |
Not Available
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