Advanced search
1 file | 336.24 KB Add to list

How to select the pilot carrier positions in CP-OFDM?

Heidi Steendam (UGent)
Author
Organization
Abstract
In this paper, we consider the problem of pilot aided channel estimation (PACE) for CP-OFDM based systems. The positions of the pilot carriers have a strong influence on the mean squared error (MSE) of the channel estimate, and thus indirectly on the overall system performance. Hence, we are interested in the pilot carrier placement that minimizes this MSE. However, the optimization problem at hand is an integer combinatorial optimization problem and thus NP hard. In this paper, we propose two heuristic algorithms searching for a good pilot carrier placement with a low MSE. Both algorithms have comparable performance: the resulting MSE is for both algorithms similar, and in the majority of the cases the optimal pilot carrier placement is found. We compare the results from the proposed heuristic algorithms with the results for the maximum distance distribution from [1]. We are able to achieve lower channel estimate MSE than with the maximum distance distribution, although the difference becomes small for large FFT size.

Downloads

  • (...).pdf
    • full text
    • |
    • UGent only
    • |
    • PDF
    • |
    • 336.24 KB

Citation

Please use this url to cite or link to this publication:

MLA
Steendam, Heidi. “How to Select the Pilot Carrier Positions in CP-OFDM?” IEEE International Conference on Communications. IEEE, 2013. 3148–3153. Print.
APA
Steendam, H. (2013). How to select the pilot carrier positions in CP-OFDM? IEEE International Conference on Communications (pp. 3148–3153). Presented at the International conference on communications 2013, IEEE.
Chicago author-date
Steendam, Heidi. 2013. “How to Select the Pilot Carrier Positions in CP-OFDM?” In IEEE International Conference on Communications, 3148–3153. IEEE.
Chicago author-date (all authors)
Steendam, Heidi. 2013. “How to Select the Pilot Carrier Positions in CP-OFDM?” In IEEE International Conference on Communications, 3148–3153. IEEE.
Vancouver
1.
Steendam H. How to select the pilot carrier positions in CP-OFDM? IEEE International Conference on Communications. IEEE; 2013. p. 3148–53.
IEEE
[1]
H. Steendam, “How to select the pilot carrier positions in CP-OFDM?,” in IEEE International Conference on Communications, Budapest, Hungary, 2013, pp. 3148–3153.
@inproceedings{4087663,
  abstract     = {In this paper, we consider the problem of pilot aided channel estimation (PACE) for CP-OFDM based systems. The positions of the pilot carriers have a strong influence on the mean squared error (MSE) of the channel estimate, and thus indirectly on the overall system performance. Hence, we are interested in the pilot carrier placement that minimizes this MSE. However, the optimization problem at hand is an integer combinatorial optimization problem and thus NP hard. In this paper, we propose two heuristic algorithms searching for a good pilot carrier placement with a low MSE. Both algorithms have comparable performance: the resulting MSE is for both algorithms similar, and in the majority of the cases the optimal pilot carrier placement is found. We compare the results from the proposed heuristic algorithms with the results for the maximum distance distribution from [1]. We are able to achieve lower channel estimate MSE than with the maximum distance distribution, although the difference becomes small for large FFT size.},
  author       = {Steendam, Heidi},
  booktitle    = {IEEE International Conference on Communications},
  isbn         = {9781467331227},
  issn         = {1550-3607},
  language     = {eng},
  location     = {Budapest, Hungary},
  pages        = {3148--3153},
  publisher    = {IEEE},
  title        = {How to select the pilot carrier positions in CP-OFDM?},
  year         = {2013},
}

Web of Science
Times cited: