EXIT chart evaluation of a receiver structure for multi-user multi-antenna OFDM systems
Hammarberg, Peter LU ; Rusek, Fredrik LU ; Salvo Rossi, Pierluigi and Edfors, Ove LU
(2009)
IEEE Global Telecommunications Conference (GLOBECOM), 2009
p.2402-2407
- Abstract
- In this paper we evaluate, by means of Extrinsic Information Transfer (EXIT) charts, an iterative receiver that has emerged as a promising candidate for non-coherent multi-user multi-antenna OFDM systems. The receiver performs parallel interference cancellation (followed by linear filtering) and channel estimation, using soft symbols obtained from a bank of single-user decoders. For the sake of conceptual clarity we study a system with two single antenna users and a receiver with two antennas, and we demonstrate how the convergence behavior of the receiver can be visualized using paired three dimensional EXIT surfaces. Our results show that the actual decoder trajectories obtained through simulations are well predicted from the EXIT... (More)
- In this paper we evaluate, by means of Extrinsic Information Transfer (EXIT) charts, an iterative receiver that has emerged as a promising candidate for non-coherent multi-user multi-antenna OFDM systems. The receiver performs parallel interference cancellation (followed by linear filtering) and channel estimation, using soft symbols obtained from a bank of single-user decoders. For the sake of conceptual clarity we study a system with two single antenna users and a receiver with two antennas, and we demonstrate how the convergence behavior of the receiver can be visualized using paired three dimensional EXIT surfaces. Our results show that the actual decoder trajectories obtained through simulations are well predicted from the EXIT charts. For the iterative receiver under investigation we identify a very specific problem with EXIT chart generation; the EXIT curve for the inner component decoder depends on the outer encoder. To handle this problem we propose a modification to the iterative receiver which solves the aforementioned problem; the performance degradation is demonstrated to be small. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1604722
- author
- Hammarberg, Peter
LU
; Rusek, Fredrik
LU
; Salvo Rossi, Pierluigi
and Edfors, Ove
LU
- organization
- publishing date
- 2009
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- host publication
- Proc. IEEE Global Telecommunications Conference (GLOBECOM) 2009
- pages
- 2402 - 2407
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- conference name
- IEEE Global Telecommunications Conference (GLOBECOM), 2009
- conference location
- Honolulu, Hawaii, United States
- conference dates
- 2009-11-30 - 2009-12-04
- external identifiers
-
- wos:000280579100398
- scopus:77951579485
- ISBN
- 978-1-4244-4148-8
- DOI
- 10.1109/GLOCOM.2009.5426288
- project
- Radiosystem: NORDITE/WILATI - WIreless LANs with high Throughput in Interference-limited environments (VINNOVA, AM/FT/OE)
- language
- English
- LU publication?
- yes
- id
- 3e865691-0ec5-49f8-ae46-fdf430a42747 (old id 1604722)
- date added to LUP
- 2016-04-04 10:34:30
- date last changed
- 2024-01-12 20:50:26
@inproceedings{3e865691-0ec5-49f8-ae46-fdf430a42747,
abstract = {{In this paper we evaluate, by means of Extrinsic Information Transfer (EXIT) charts, an iterative receiver that has emerged as a promising candidate for non-coherent multi-user multi-antenna OFDM systems. The receiver performs parallel interference cancellation (followed by linear filtering) and channel estimation, using soft symbols obtained from a bank of single-user decoders. For the sake of conceptual clarity we study a system with two single antenna users and a receiver with two antennas, and we demonstrate how the convergence behavior of the receiver can be visualized using paired three dimensional EXIT surfaces. Our results show that the actual decoder trajectories obtained through simulations are well predicted from the EXIT charts. For the iterative receiver under investigation we identify a very specific problem with EXIT chart generation; the EXIT curve for the inner component decoder depends on the outer encoder. To handle this problem we propose a modification to the iterative receiver which solves the aforementioned problem; the performance degradation is demonstrated to be small.}},
author = {{Hammarberg, Peter and Rusek, Fredrik and Salvo Rossi, Pierluigi and Edfors, Ove}},
booktitle = {{Proc. IEEE Global Telecommunications Conference (GLOBECOM) 2009}},
isbn = {{978-1-4244-4148-8}},
language = {{eng}},
pages = {{2402--2407}},
publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
title = {{EXIT chart evaluation of a receiver structure for multi-user multi-antenna OFDM systems}},
url = {{https://lup.lub.lu.se/search/files/5571013/5385557.pdf}},
doi = {{10.1109/GLOCOM.2009.5426288}},
year = {{2009}},
}