Correlation-Based Adaptive Pilot Pattern in Control/Data Separation Architecture

Mohamed, A., Onireti, O. , Imran, M. , Imrany, A. and Tafazolli, R. (2015) Correlation-Based Adaptive Pilot Pattern in Control/Data Separation Architecture. In: 2015 IEEE International Conference on Communications (ICC), London, UK, 08-12 Jun 2015, pp. 2233-2238. ISBN 9781467364324 (doi: 10.1109/ICC.2015.7248657)

Abstract

Most of the wireless systems such as the long term evolution (LTE) adopt a pilot symbol-aided channel estimation approach for data detection purposes. In this technique, some of the transmission resources are allocated to common pilot signals which constitute a significant overhead in current standards. This can be traced to the worst-case design approach adopted in these systems where the pilot spacing is chosen based on extreme condition assumptions. This suggests extending the set of the parameters that can be adaptively adjusted to include the pilot density. In this paper, we propose an adaptive pilot pattern scheme that depends on estimating the channel correlation. A new system architecture with a logical separation between control and data planes is considered and orthogonal frequency division multiplexing (OFDM) is chosen as the access technique. Simulation results show that the proposed scheme can provide a significant saving of the LTE pilot overhead with a marginal performance penalty.

• Item Type: Conference Proceedings
• Additional Information: This work was made possible by NPRP grant No. 5-1047- 2437 from the Qatar National Research Fund (a member of The Qatar Foundation).
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Imran, Professor Muhammad and Onireti, Oluwakayode
• Authors: Mohamed, A., Onireti, O., Imran, M., Imrany, A., and Tafazolli, R.
• College/School: College of Science and Engineering > School of Engineering; College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
• ISSN: 1550-3607
• ISBN: 9781467364324
• Copyright Holders: Copyright © 2015 IEEE
• First Published: First published in 2015 IEEE International Conference on Communications (ICC): 2233-2238
• Publisher Policy: Reproduced in accordance with the publisher copyright policy