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Optimal and Suboptimal Linear Receivers for Impulse Radio UWB Systems

Gezici, S; Poor, H V; Kobayashi, H and Molisch, Andreas LU (2006) IEEE International Conference on Ultra-Wideband (ICUWB), 2006 In The 2006 IEEE International Conference on Ultra-Wideband p.161-166
Abstract
The high time resolution of ultra-wideband (UWB) signals results in a large number of multipath components (MPCs) arriving at the receiver, which presents a source of diversity. In addition to this multipath diversity, there is also repetition diversity inherent in impulse radio (IR) UWB systems, since a number of pulses are transmitted for each information symbol. In order to make optimal use of multipath and repetition diversity, the receiver needs to consider the optimal combination of contributions from both different frames and different MPCs. In this overview paper, the optimal linear receiver for a given user in a frequency-selective multiuser environment, which combines all the samples from the received signal according to the... (More)
The high time resolution of ultra-wideband (UWB) signals results in a large number of multipath components (MPCs) arriving at the receiver, which presents a source of diversity. In addition to this multipath diversity, there is also repetition diversity inherent in impulse radio (IR) UWB systems, since a number of pulses are transmitted for each information symbol. In order to make optimal use of multipath and repetition diversity, the receiver needs to consider the optimal combination of contributions from both different frames and different MPCs. In this overview paper, the optimal linear receiver for a given user in a frequency-selective multiuser environment, which combines all the samples from the received signal according to the minimum mean square error (MMSE), criterion, is studied. Due to the complexity of this optimal receiver, two suboptimal receivers with lower complexity are considered, optimal frame combining (OFC) and optimal multipath combining (OMC) receivers, which reduce computational complexity by suboptimal combining in the multipath diversity and repetition diversity domains, respectively. Finally, a two-step MMSE algorithm which reduces complexity by performing MMSE combining in two steps is presented, and its optimality properties are discussed. Simulations are performed to compare the performance of different receivers (Less)
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
The 2006 IEEE International Conference on Ultra-Wideband
pages
161 - 166
conference name
IEEE International Conference on Ultra-Wideband (ICUWB), 2006
external identifiers
  • Scopus:41649107714
ISBN
1-4244-0101-1
DOI
10.1109/ICU.2006.281533
language
English
LU publication?
yes
id
bccd22a6-9b4a-478c-95a5-1de256743cb3 (old id 600920)
date added to LUP
2007-11-29 13:56:11
date last changed
2016-10-13 04:57:13
@misc{bccd22a6-9b4a-478c-95a5-1de256743cb3,
  abstract     = {The high time resolution of ultra-wideband (UWB) signals results in a large number of multipath components (MPCs) arriving at the receiver, which presents a source of diversity. In addition to this multipath diversity, there is also repetition diversity inherent in impulse radio (IR) UWB systems, since a number of pulses are transmitted for each information symbol. In order to make optimal use of multipath and repetition diversity, the receiver needs to consider the optimal combination of contributions from both different frames and different MPCs. In this overview paper, the optimal linear receiver for a given user in a frequency-selective multiuser environment, which combines all the samples from the received signal according to the minimum mean square error (MMSE), criterion, is studied. Due to the complexity of this optimal receiver, two suboptimal receivers with lower complexity are considered, optimal frame combining (OFC) and optimal multipath combining (OMC) receivers, which reduce computational complexity by suboptimal combining in the multipath diversity and repetition diversity domains, respectively. Finally, a two-step MMSE algorithm which reduces complexity by performing MMSE combining in two steps is presented, and its optimality properties are discussed. Simulations are performed to compare the performance of different receivers},
  author       = {Gezici, S and Poor, H V and Kobayashi, H and Molisch, Andreas},
  isbn         = {1-4244-0101-1},
  language     = {eng},
  pages        = {161--166},
  series       = {The 2006 IEEE International Conference on Ultra-Wideband},
  title        = {Optimal and Suboptimal Linear Receivers for Impulse Radio UWB Systems},
  url          = {http://dx.doi.org/10.1109/ICU.2006.281533},
  year         = {2006},
}