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New factor graph based multiuser detector for spectrally efficient CPM

Nele Noels UGent and Marc Moeneclaey UGent (2012) 4th International Conference on Advances in Satellite and Space Communications, Proceedings. p.86-91
abstract
This paper presents a new iterative multiuser detection algorithm for asynchronous spectrally-efficient M-ary continuous-phase modulation in additive white Gaussian noise. This detection algorithm is closely related to another algorithm that was recently proposed by the same authors, but it follows from applying the sum-product algorithm to a different factor graph of the same multiuser detection problem. This, in turn, results in a different way to approximate the marginal bit a-posteriori probabilities that are used to perform minimum bit error rate multiuser detection. The girth of the factor graph considered in this contribution is twice as large, which is known to be potentially beneficial for the accuracy of the a-posteriori probabilities. The size of the largest factor graph variable alphabets also multiplies with M, rendering the straightforward application of the sum-product algorithm more complex. Through approximating a suitable set of sum-product messages by a Gaussian distribution, this complexity is significantly reduced. For a set of system parameters yielding high spectral efficiency, the resulting algorithm significantly outperforms the previously proposed solution.
Please use this url to cite or link to this publication:
author
organization
year
type
conference
publication status
published
subject
in
4th International Conference on Advances in Satellite and Space Communications, Proceedings
article_number
30032
pages
86 - 91
publisher
IARIA
conference name
4th International Conference on Advances in Satellite and Space Communications (SPACOMM - 2012)
conference location
Chamonix, France
conference start
2012-04-29
conference end
2012-05-04
ISBN
9781612081946
language
English
UGent publication?
yes
classification
C1
copyright statement
I have transferred the copyright for this publication to the publisher
id
2986172
handle
http://hdl.handle.net/1854/LU-2986172
date created
2012-09-13 10:32:56
date last changed
2012-09-19 09:53:21
@inproceedings{2986172,
  abstract     = {This paper presents a new iterative multiuser detection algorithm for asynchronous spectrally-efficient M-ary continuous-phase modulation in additive white Gaussian noise. This detection algorithm is closely related to another algorithm that was recently proposed by the same authors, but it follows from applying the sum-product algorithm to a different factor graph of the same multiuser detection problem. This, in turn, results in a different way to approximate the marginal bit a-posteriori probabilities that are used to perform minimum bit error rate multiuser detection. The girth of the factor graph considered in this contribution is twice as large, which is known to be potentially beneficial for the accuracy of the a-posteriori probabilities. The size of the largest factor graph variable alphabets also multiplies with M, rendering the straightforward application of the sum-product algorithm more complex. Through approximating a suitable set of sum-product messages by a Gaussian distribution, this complexity is significantly reduced. For a set of system parameters yielding high spectral efficiency, the resulting algorithm significantly outperforms the previously proposed solution.},
  articleno    = {30032},
  author       = {Noels, Nele and Moeneclaey, Marc},
  booktitle    = {4th International Conference on Advances in Satellite and Space Communications, Proceedings},
  isbn         = {9781612081946},
  language     = {eng},
  location     = {Chamonix, France},
  pages        = {30032:86--30032:91},
  publisher    = {IARIA},
  title        = {New factor graph based multiuser detector for spectrally efficient CPM},
  year         = {2012},
}

Chicago
Noels, Nele, and Marc Moeneclaey. 2012. “New Factor Graph Based Multiuser Detector for Spectrally Efficient CPM.” In 4th International Conference on Advances in Satellite and Space Communications, Proceedings, 86–91. IARIA.
APA
Noels, N., & Moeneclaey, M. (2012). New factor graph based multiuser detector for spectrally efficient CPM. 4th International Conference on Advances in Satellite and Space Communications, Proceedings (pp. 86–91). Presented at the 4th International Conference on Advances in Satellite and Space Communications (SPACOMM - 2012), IARIA.
Vancouver
1.
Noels N, Moeneclaey M. New factor graph based multiuser detector for spectrally efficient CPM. 4th International Conference on Advances in Satellite and Space Communications, Proceedings. IARIA; 2012. p. 86–91.
MLA
Noels, Nele, and Marc Moeneclaey. “New Factor Graph Based Multiuser Detector for Spectrally Efficient CPM.” 4th International Conference on Advances in Satellite and Space Communications, Proceedings. IARIA, 2012. 86–91. Print.