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2008
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Pre-Equalization and Precoding Design for Frequency-Selective Fading Channels

8 years 9 months ago
Pre-Equalization and Precoding Design for Frequency-Selective Fading Channels
— In this paper, we consider the joint transmitter and receiver design problem based on a novel approximate maximum likelihood decision feedback equalizer (A-ML-DFE) over frequency-selective, timeinvariant fading channels. By applying decision feedback equalization, Gaussian approximation, a pre-whitening filter, and a matched filter, the proposed A-ML-DFE can realize single symbol detection. The proposed scheme achieves near-optimal performance with a complexity lower than the linear MMSE and the MMSE-DFE. By assuming full channel knowledge, we perform pre-equalization and precoding in a downlink scenario at the transmitter side. The pre-equalizer can achieve perfect decision feedback and thus, provide better performance at low signalto-noise ratio (SNR) with a reduced receiver complexity. The precoder designed to minimize the analytical symbol error rate (SER) of this system can further improve the performance.
Lingyang Song, Are Hjørungnes, Manav R. Bha
Added 30 May 2010
Updated 30 May 2010
Type Conference
Year 2008
Where ICC
Authors Lingyang Song, Are Hjørungnes, Manav R. Bhatnagar
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