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Trellis precoding: combined coding, precoding and shaping for intersymbol interference channels | IEEE Journals & Magazine | IEEE Xplore

Trellis precoding: combined coding, precoding and shaping for intersymbol interference channels


Abstract:

On a linear Gaussian channel with intersymbol interference (ISI), trellis precoding is a method that achieves the equalization performance of Tomlinson-Harashima (TH) pre...Show More

Abstract:

On a linear Gaussian channel with intersymbol interference (ISI), trellis precoding is a method that achieves the equalization performance of Tomlinson-Harashima (TH) precoding, the coding gain of any known lattice-type coset code, and a considerable shaping gain. Trellis precoding may be viewed as a generalization of trellis shaping to Gaussian ISI channels, or, alternatively, as a generalization of TH precoding, with coded modulation that achieves shaping gain. With trellis precoding channel capacity can be approached essentially as closely on any strictly bandlimited, high signal-to-noise ratio Gaussian channel as on the ideal channel, using the same coding techniques. For first- and second-order FIR and IIR (finite and infinite impulse response) channels, it is shown that shaping gains close to 1 dB can be obtained with a two-dimensional four-state trellis code. Trellis precoding is quite practical whenever channel information is available at the transmitter.<>
Published in: IEEE Transactions on Information Theory ( Volume: 38, Issue: 2, March 1992)
Page(s): 301 - 314
Date of Publication: 31 March 1992

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