Pre/post-rake diversity combining for UWB communications in the presence of pulse overlap
Guan, Yong Liang
Date of Issue2012
School of Electrical and Electronic Engineering
Taking the effect of pulse overlap into account, we address the pre/post-rake technique using rake structure at both transmitter and receiver. Firstly, we propose a single-stream (SS) pre/post-rake, in which the pair of pre-rake and post-rake weighting vectors is optimally derived through generalized eigenvalue decomposition (GEVD). Secondly, by judiciously designing multiple pairs of weighting vectors, we derive multiple-stream (MS) pre/post-rake, which enables parallel subchannel transmission while not requiring multiple antennas at the transmitter or receiver. Finally, we conduct simulations to verify the advantages of the SS pre/post-rake and the MS pre/post-rake over existing rakes.
DRNTU::Engineering::Electrical and electronic engineering
IEEE transactions on wireless communications
© 2012 IEEE.