University of Oulu

P. Jayasinghe, A. Tölli, J. Kaleva, G. Venkatraman and M. Latva-aho, "Traffic aware pilot de-contamination for multi-cell MIMO systems," 2017 European Conference on Networks and Communications (EuCNC), Oulu, 2017, pp. 1-6. doi: 10.1109/EuCNC.2017.7980695

Traffic aware pilot de-contamination for multi-cell MIMO systems

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Author: Jayasingh, Praneeth1; Tölli, Antti1; Kaleva, Jarkko1;
Organizations: 1Centre for Wireless Communications, University of Oulu, P.O. Box 4500, FIN-90014, Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.2 MB)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2017
Publish Date: 2018-08-07


Traffic aware precoder/decoder design in multi-cell multi-user multiple-input multiple-output systems is considered with the objective of weighted queue minimization, where the original non-convex optimization problem is solved via successive convex approximation. Centralized pilot reuse algorithms for mitigating the pilot contamination are investigated to reflect the traffic aware optimization objective. Distinctive feature of the proposed pilot reuse algorithms is to utilize the user buffer state information jointly with the traditional large scale fading values when allocating the limited pilot resources among the served users. Numerical examples compare the performance of the proposed pilot reuse algorithms for varying number of available pilots and different traffic arrival models. The results demonstrate that significant performance gains are available when the pilot allocation strategy is designed to reflect closely the overall system optimization objective.

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ISBN: 978-1-5386-3873-6
ISBN Print: 978-1-5386-3874-3
Pages: 1 - 6
DOI: 10.1109/EuCNC.2017.7980695
Host publication: 2017 European Conference on Networks and Communications (EuCNC), 12-15 June 2017, Oulu, Finland : 5G - European Roadmap, Global Impact
Conference: European Conference on Networks and Communications
Type of Publication: A4 Article in conference proceedings
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This research was supported by Finnish Funding Agency for Technology and Innovation (TEKES), Nokia Networks.
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