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Achievable rates for Tomlinson-Harashima precoding

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2 Author(s)
R. D. Wesel ; Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA ; J. M. Cioffi

This article examines Tomlinson-Harashima precoding (1971, 1972) on discrete-time channels having intersymbol interference and additive white Gaussian noise. An exact expression for the maximum achievable information rate of zero-forcing (ZF) THP is derived as a function of the channel impulse response, the input power constraint, and the additive white Gaussian noise variance. Information rate bounds are provided for the minimum mean-square error (MMSE) THP. The performance of ZF-THP and MMSE-THP relative to each other and to channel capacity is explored in general and for some example channels. The importance of symbol rate to ZF-THP performance is demonstrated

Published in:

IEEE Transactions on Information Theory  (Volume:44 ,  Issue: 2 )