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Low-Complexity MMSE Combining for Linear Impulse Radio UWB Receivers

Gecizi, S; Molisch, Andreas LU ; Kobayashi, H and Poor, H V (2006) IEEE International Conference on Communications, 2006 In IEEE International Conference on Communications, 2006 p.4706-4711
Abstract
Due to the fine delay resolution of typical ultra wideband (UWB) systems, Rake receivers need to combine samples from a large number of multipath components (MPCs) in order to collect sufficient signal energy for reliable decisions. In addition, these samples need to be combined optimally in order to minimize bit error probability. The optimal linear minimum mean square error (MMSE) combining scheme might require inversion of a large matrix depending on channel and system parameters. Therefore, suboptimal algorithms with lower computational complexity but close-to-optimal performance are desirable. In this paper, a low-complexity combining scheme is proposed for that purpose, which divides samples into a number of groups and performs MMSE... (More)
Due to the fine delay resolution of typical ultra wideband (UWB) systems, Rake receivers need to combine samples from a large number of multipath components (MPCs) in order to collect sufficient signal energy for reliable decisions. In addition, these samples need to be combined optimally in order to minimize bit error probability. The optimal linear minimum mean square error (MMSE) combining scheme might require inversion of a large matrix depending on channel and system parameters. Therefore, suboptimal algorithms with lower computational complexity but close-to-optimal performance are desirable. In this paper, a low-complexity combining scheme is proposed for that purpose, which divides samples into a number of groups and performs MMSE combining in two steps. Performance of this two-step combining scheme is investigated theoretically and by simulations. (Less)
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
in press
subject
in
IEEE International Conference on Communications, 2006
pages
4706 - 4711
conference name
IEEE International Conference on Communications, 2006
external identifiers
  • Scopus:42549140182
ISBN
1-4244-0355-3
DOI
10.1109/ICC.2006.255383
language
English
LU publication?
yes
id
5ae76173-cbec-49a9-a827-56e43abed5b1 (old id 600854)
date added to LUP
2007-11-29 11:57:35
date last changed
2016-10-13 05:02:21
@misc{5ae76173-cbec-49a9-a827-56e43abed5b1,
  abstract     = {Due to the fine delay resolution of typical ultra wideband (UWB) systems, Rake receivers need to combine samples from a large number of multipath components (MPCs) in order to collect sufficient signal energy for reliable decisions. In addition, these samples need to be combined optimally in order to minimize bit error probability. The optimal linear minimum mean square error (MMSE) combining scheme might require inversion of a large matrix depending on channel and system parameters. Therefore, suboptimal algorithms with lower computational complexity but close-to-optimal performance are desirable. In this paper, a low-complexity combining scheme is proposed for that purpose, which divides samples into a number of groups and performs MMSE combining in two steps. Performance of this two-step combining scheme is investigated theoretically and by simulations.},
  author       = {Gecizi, S and Molisch, Andreas and Kobayashi, H and Poor, H V},
  isbn         = {1-4244-0355-3},
  language     = {eng},
  pages        = {4706--4711},
  series       = {IEEE International Conference on Communications, 2006},
  title        = {Low-Complexity MMSE Combining for Linear Impulse Radio UWB Receivers},
  url          = {http://dx.doi.org/10.1109/ICC.2006.255383},
  year         = {2006},
}