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Low complexity Rake receivers in ultra-wideband channels

Cassioli, Dajana; Win, Moe Z.; Vatalaro, Francesco and Molisch, Andreas LU (2007) In IEEE Transactions on Wireless Communications 6(4). p.1265-1275
Abstract
One of the major issues for the design of ultra-wideband (UWB) receivers is the need to recover the signal energy dispersed over many multipath components, while keeping the receiver complexity low. To this aim we consider two schemes for reduced-complexity UWB Rake receivers, both of which combine a subset of the available resolved multipath components. The first method, called partial Rake (PRake), combines the first arriving multipath components. The second is, known as selective Rake (SRake) and combines the instantaneously strongest multipath components. We evaluate and compare the link performance of these Rake receivers in different UWB channels, whose models are based on extensive propagation measurements. We quantify the effect of... (More)
One of the major issues for the design of ultra-wideband (UWB) receivers is the need to recover the signal energy dispersed over many multipath components, while keeping the receiver complexity low. To this aim we consider two schemes for reduced-complexity UWB Rake receivers, both of which combine a subset of the available resolved multipath components. The first method, called partial Rake (PRake), combines the first arriving multipath components. The second is, known as selective Rake (SRake) and combines the instantaneously strongest multipath components. We evaluate and compare the link performance of these Rake receivers in different UWB channels, whose models are based on extensive propagation measurements. We quantify the effect of the channel characteristics on the receiver performance, analyzing in particular the influence of small-scale fading statistics. We find that for dense channels the performance of the simpler PRake receiver is almost as good as that of the SRake receiver, even for a small number of fingers. In sparse channels, however, the SRake outperforms the PRake significantly. We also show that for a fixed transmitted energy there is an optimum transmission bandwidth. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
propagation channel, stochastic tapped-delay line model, UWB, partial Rake, selective Rake, reduced complexity Rake receivers
in
IEEE Transactions on Wireless Communications
volume
6
issue
4
pages
1265 - 1275
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • wos:000245768800019
  • scopus:34247350779
ISSN
1536-1276
DOI
10.1109/TWC.2007.348323
language
English
LU publication?
yes
id
efc5200c-b81d-4382-adff-cb61028d82a0 (old id 665985)
date added to LUP
2007-12-05 16:15:57
date last changed
2017-10-22 04:35:05
@article{efc5200c-b81d-4382-adff-cb61028d82a0,
  abstract     = {One of the major issues for the design of ultra-wideband (UWB) receivers is the need to recover the signal energy dispersed over many multipath components, while keeping the receiver complexity low. To this aim we consider two schemes for reduced-complexity UWB Rake receivers, both of which combine a subset of the available resolved multipath components. The first method, called partial Rake (PRake), combines the first arriving multipath components. The second is, known as selective Rake (SRake) and combines the instantaneously strongest multipath components. We evaluate and compare the link performance of these Rake receivers in different UWB channels, whose models are based on extensive propagation measurements. We quantify the effect of the channel characteristics on the receiver performance, analyzing in particular the influence of small-scale fading statistics. We find that for dense channels the performance of the simpler PRake receiver is almost as good as that of the SRake receiver, even for a small number of fingers. In sparse channels, however, the SRake outperforms the PRake significantly. We also show that for a fixed transmitted energy there is an optimum transmission bandwidth.},
  author       = {Cassioli, Dajana and Win, Moe Z. and Vatalaro, Francesco and Molisch, Andreas},
  issn         = {1536-1276},
  keyword      = {propagation channel,stochastic tapped-delay line model,UWB,partial Rake,selective Rake,reduced complexity Rake receivers},
  language     = {eng},
  number       = {4},
  pages        = {1265--1275},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  series       = {IEEE Transactions on Wireless Communications},
  title        = {Low complexity Rake receivers in ultra-wideband channels},
  url          = {http://dx.doi.org/10.1109/TWC.2007.348323},
  volume       = {6},
  year         = {2007},
}