Minimum Mean-Squared Error Impulse Response Shortening for Discrete Multitone Transceivers

We reformulate the minimum mean squared error (MMSE) solution for time domain equalization (TEQ) in multitone transceivers.We show that the maximum shortening signal-to-noise ratio (MSSNR) and minimum intersymbol interference (min-ISI) TEQs are particular cases of our new formulation. With good channel estimation, the MMSE-TEQ achieves near-optimal rate performance. Our algorithm is less sensitive to channel estimation errors than other methods.