A comparative study of pilot-based channel estimators for wireless OFDM
Sandell, Magnus and Edfors, Ove LU
(1996)
In Div. of Signal Processing, Research Report
- Abstract
- This report deals with pilot-based channel estimation in wireless OFDM systems. We assume that the receiver is able to use all transmitted pilots, which is the case in broadcasting and in the downlink of a multiuser system. Four estimators (of which two have been proposed in the literature) are compared, both in terms of mean-squared error and bit-error rates. In the latter case, we simulate a multiuser system which incorporates channel coding. The channel estimation is a two-dimensional problem (time and frequency), and both separable and non-separable estimators are investigated. We design low-rank approximations of these estimators, and compare the performance at given complexities. The comparison shows that the use of separable... (More)
- This report deals with pilot-based channel estimation in wireless OFDM systems. We assume that the receiver is able to use all transmitted pilots, which is the case in broadcasting and in the downlink of a multiuser system. Four estimators (of which two have been proposed in the literature) are compared, both in terms of mean-squared error and bit-error rates. In the latter case, we simulate a multiuser system which incorporates channel coding. The channel estimation is a two-dimensional problem (time and frequency), and both separable and non-separable estimators are investigated. We design low-rank approximations of these estimators, and compare the performance at given complexities. The comparison shows that the use of separable estimators increases the performance substantially, compared to non-separable estimators with the same complexity. For the scenario investigated in this report the performance is further improved by applying low-rank approximations to separable estimators. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1043840
- author
- Sandell, Magnus
and Edfors, Ove
LU
- publishing date
- 1996
- type
- Book/Report
- publication status
- published
- subject
- in
- Div. of Signal Processing, Research Report
- pages
- 34 pages
- publisher
- Luleå University of Technology
- report number
- TULEA 1996:19
- language
- English
- LU publication?
- no
- id
- f19fbf5a-fc90-4de5-8d56-235069a8b193 (old id 1043840)
- alternative location
- http://www.sm.luth.se/csee/sp/research/report/sae96r.pdf
- date added to LUP
- 2016-04-04 10:13:28
- date last changed
- 2018-11-21 20:57:32
@techreport{f19fbf5a-fc90-4de5-8d56-235069a8b193,
abstract = {{This report deals with pilot-based channel estimation in wireless OFDM systems. We assume that the receiver is able to use all transmitted pilots, which is the case in broadcasting and in the downlink of a multiuser system. Four estimators (of which two have been proposed in the literature) are compared, both in terms of mean-squared error and bit-error rates. In the latter case, we simulate a multiuser system which incorporates channel coding. The channel estimation is a two-dimensional problem (time and frequency), and both separable and non-separable estimators are investigated. We design low-rank approximations of these estimators, and compare the performance at given complexities. The comparison shows that the use of separable estimators increases the performance substantially, compared to non-separable estimators with the same complexity. For the scenario investigated in this report the performance is further improved by applying low-rank approximations to separable estimators.}},
author = {{Sandell, Magnus and Edfors, Ove}},
institution = {{Luleå University of Technology}},
language = {{eng}},
number = {{TULEA 1996:19}},
series = {{Div. of Signal Processing, Research Report}},
title = {{A comparative study of pilot-based channel estimators for wireless OFDM}},
url = {{https://lup.lub.lu.se/search/files/5490877/5323012.pdf}},
year = {{1996}},
}