Linear Phase Impulse Response Shortening for xDSL DMT modems

"The problem of shortening the effective channel impulse response in xDSL is addressed. A new approach is described based on linear phase FIR equaliser filters. The mathematical framework for the LPIRS method is developed and simulation results are presented for several VDSL loops. For a similar performance, the new method offers a design with considerably lower computational complexity and a simpler implementation, on either DSP or dedicated hardware solutions."