Adaptive Pre-FFT Equalizer with High-Precision Channel Estimator for ISI Channels

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概要

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• We present an attractive approach for OFDM transmission using an adaptive pre-FFT equalizer, which can select ICI reduction mode according to channel condition, and a degenerated-inverse-matrix-based channel estimator (DIME), which uses a cyclic sinc-function matrix uniquely determined by transmitted subcarriers. In addition to simulation results, the proposed system with an adaptive pre-FFT equalizer and DIME has been laboratory tested by using a software defined radio (SDR)-based test bed. The simulation and experimental results demonstrated that the system at a rate of more than 100Mbps can provide a bit error rate of less than 10-3 for a fast multi-path fading channel that has a moving velocity of more than 200km/h with a delay spread of 1.9µs (a maximum delay path of 7.3µs) in the 5-GHz band.

• 2009-11-01

著者

• Yoshida Makoto

  Fujitsu Laboratories Ltd.

関連論文

• Adaptive Pre-FFT Equalizer with High-Precision Channel Estimator for ISI Channels

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