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Cooperative relay networks using fountain codes

Molisch, Andreas LU ; Mehta, N B ; Yedidia, J and Zhang, J (2006) IEEE Global Telecommunications Conference, 2006
Abstract
We investigate a cooperative communications scheme with N parallel relays, where both the transmissions from the source to the relays and from the relays to the destination use fountain codes. Receiver for codes can accumulate mutual information, while traditional energy collection methods, such as repetition or cooperative space-time codes, only accumulate energy. As a consequence, using fountain codes can reduce the total energy required for transmitting data from the source to the destination. We first analyze the scenario where the source stops transmitting and the relay nodes start transmitting after L relay nodes have successfully decoded the source data. We optimize L, and also give closed-form equations for the energy savings that... (More)
We investigate a cooperative communications scheme with N parallel relays, where both the transmissions from the source to the relays and from the relays to the destination use fountain codes. Receiver for codes can accumulate mutual information, while traditional energy collection methods, such as repetition or cooperative space-time codes, only accumulate energy. As a consequence, using fountain codes can reduce the total energy required for transmitting data from the source to the destination. We first analyze the scenario where the source stops transmitting and the relay nodes start transmitting after L relay nodes have successfully decoded the source data. We optimize L, and also give closed-form equations for the energy savings that can be achieved by the use of mutual-information-collection at the receiver instead of the traditional energy-collection methods. We then analyze an alternate scenario where each relay node starts its transmission to the destination as soon as it has decoded the source data, and helps the other relay nodes that are still in reception mode. Doing so further reduces the total transmission time and energy consumption. (Less)
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author
; ; and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
host publication
[Host publication title missing]
pages
6 pages
publisher
IEEE - Institute of Electrical and Electronics Engineers Inc.
conference name
IEEE Global Telecommunications Conference, 2006
conference location
San Francisco, CA, United States
conference dates
2006-11-27 - 2006-12-01
external identifiers
  • scopus:50949118261
ISSN
1930-529X
ISBN
1-4244-0356-1
DOI
10.1109/GLOCOM.2006.858
language
English
LU publication?
yes
additional info
The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Department of Electroscience (011041000)
id
e3ec75f7-88ba-431d-802e-60f78c24324b (old id 600911)
date added to LUP
2016-04-01 16:41:59
date last changed
2021-04-06 04:44:09
@inproceedings{e3ec75f7-88ba-431d-802e-60f78c24324b,
  abstract     = {We investigate a cooperative communications scheme with N parallel relays, where both the transmissions from the source to the relays and from the relays to the destination use fountain codes. Receiver for codes can accumulate mutual information, while traditional energy collection methods, such as repetition or cooperative space-time codes, only accumulate energy. As a consequence, using fountain codes can reduce the total energy required for transmitting data from the source to the destination. We first analyze the scenario where the source stops transmitting and the relay nodes start transmitting after L relay nodes have successfully decoded the source data. We optimize L, and also give closed-form equations for the energy savings that can be achieved by the use of mutual-information-collection at the receiver instead of the traditional energy-collection methods. We then analyze an alternate scenario where each relay node starts its transmission to the destination as soon as it has decoded the source data, and helps the other relay nodes that are still in reception mode. Doing so further reduces the total transmission time and energy consumption.},
  author       = {Molisch, Andreas and Mehta, N B and Yedidia, J and Zhang, J},
  booktitle    = {[Host publication title missing]},
  isbn         = {1-4244-0356-1},
  issn         = {1930-529X},
  language     = {eng},
  publisher    = {IEEE - Institute of Electrical and Electronics Engineers Inc.},
  title        = {Cooperative relay networks using fountain codes},
  url          = {http://dx.doi.org/10.1109/GLOCOM.2006.858},
  doi          = {10.1109/GLOCOM.2006.858},
  year         = {2006},
}