Pulse shaping with bireciprocal wave digital lattice filters

In this work we show that bireciprocal wave digital lattice -lters (BWDLF) can be used very favourably as pulse shaping lters in digital communications. A new approach, at least in this context, is presented, how to cope with the phase distortions which are caused by the nonlinear phase response of BWDLFs. This approach is characterized by minimizing the energy of the intersymbol interference with a nite impulse response (FIR) lter instead of trying to equalize directly the nonlinear phase with an appropriate allpass lter. The simulation results demonstrate that the lter orders and required operations per time interval at both the transmitter and receiver can be reduced compared with conventional solutions. As a new option the effort can be split asymmetrically between transmitter and receiver.