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Improved channel estimation for iterative receivers

Zemen, Thomas; Loncar, Maja LU ; Wehinger, Joachim; Mecklenbräuker, Christoph and Mueller, Ralf (2003) IEEE Global Telecommunications Conference, 2003 In IEEE Global Telecommunications Conference, 2003. GLOBECOM '03. 1. p.257-261
Abstract
In iterative receiver structures, soft information

becomes available after the decoding stage in the first iteration. This information is used to enhance the quality of the channel estimates for the next iteration. Channel estimation plays a crucial role in multi-user detection because the effective identification sequence for each user strongly depends on the channel characteristics. To combine deterministic pilot information with soft information, a generalized estimator based on the linear minimum mean square error (LMMSE) principle is derived. We present the special case of orthogonal frequency division multiplexing (OFDM) based multi-carrier code division multiple access (MC-CDMA) in detail and provide simulation... (More)
In iterative receiver structures, soft information

becomes available after the decoding stage in the first iteration. This information is used to enhance the quality of the channel estimates for the next iteration. Channel estimation plays a crucial role in multi-user detection because the effective identification sequence for each user strongly depends on the channel characteristics. To combine deterministic pilot information with soft information, a generalized estimator based on the linear minimum mean square error (LMMSE) principle is derived. We present the special case of orthogonal frequency division multiplexing (OFDM) based multi-carrier code division multiple access (MC-CDMA) in detail and provide simulation results.

The presented channel estimation algorithm can be also applied to direct sequence (DS)-CDMA and multi-input multi-output (MIMO) systems. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
IEEE Global Telecommunications Conference, 2003. GLOBECOM '03.
volume
1
pages
257 - 261
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
conference name
IEEE Global Telecommunications Conference, 2003
external identifiers
  • Scopus:0842279588
ISBN
0-7803-7974-8
DOI
10.1109/GLOCOM.2003.1258241
language
English
LU publication?
yes
id
14df9988-a27b-4236-963b-49eab7a7d855 (old id 1039786)
date added to LUP
2008-02-28 13:55:56
date last changed
2016-10-13 04:39:27
@misc{14df9988-a27b-4236-963b-49eab7a7d855,
  abstract     = {In iterative receiver structures, soft information<br/><br>
becomes available after the decoding stage in the first iteration. This information is used to enhance the quality of the channel estimates for the next iteration. Channel estimation plays a crucial role in multi-user detection because the effective identification sequence for each user strongly depends on the channel characteristics. To combine deterministic pilot information with soft information, a generalized estimator based on the linear minimum mean square error (LMMSE) principle is derived. We present the special case of orthogonal frequency division multiplexing (OFDM) based multi-carrier code division multiple access (MC-CDMA) in detail and provide simulation results.<br/><br>
The presented channel estimation algorithm can be also applied to direct sequence (DS)-CDMA and multi-input multi-output (MIMO) systems.},
  author       = {Zemen, Thomas and Loncar, Maja and Wehinger, Joachim and Mecklenbräuker, Christoph and Mueller, Ralf},
  isbn         = {0-7803-7974-8},
  language     = {eng},
  pages        = {257--261},
  publisher    = {ARRAY(0xa00fee8)},
  series       = {IEEE Global Telecommunications Conference, 2003. GLOBECOM '03.},
  title        = {Improved channel estimation for iterative receivers},
  url          = {http://dx.doi.org/10.1109/GLOCOM.2003.1258241},
  volume       = {1},
  year         = {2003},
}