SVD Tracking Algorithm for Zero Padded Block Transmission over Fading Channels

In this paper, we investigate the performance of filterbank transceivers in presence of a dispersive time-variant channel. It is well-known that filterbank transceivers can be adapted to the channel transfer function to yield intersymbol interference (ISI) cancellation. When the channel is time-variant, several problems arise, since the transceiver should be changed whenever the channel evolves. In this paper, we will allow both the transmitter and the receiver to change and satisfy the ISI-free condition, under the assumption of a zero-padded block transmission. In this case, the transmitter-receiver pair can be computed by using a singular value decomposition (SVD) of the channel matrix. A fast receiver adaptation based on SVD tracking is presented. Simulation results show that minimum performance loss can be achieved for our reduced complexity receiver.