On the impact of antenna correlation on the pilot-data balance in multiple antenna systems

Gabor Fodor, Piergiuseppe Di Marco, M. Telek

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

We consider the uplink of a single cell single input multiple output (SIMO) system, in which the mobile stations use intra-cell orthogonal pilots to facilitate uplink channel estimation. In such systems, the problem of transmission power balancing between pilot and data is known to have a large impact on the mean square error (MSE) for the received signal and, consequently, on the achievable uplink data rate. In this paper, we derive a closed form expression of the MSE for the received signal as a function of the pilot and data power levels under a per-user sum pilot-data power constraint. As a major contribution, our model is developed for arbitrary channel covariance matrices and it enables us to study the impact of the number of antennas and antenna correlation structures, including the popular 3GPP spatial channel model. Numerical results suggest that the effect of the antenna spacing is limited, but the angle of arrival and angular spread have a strong and articulated impact on the MSE performance. Moreover, as the number of antennas at the base station grows large, we show that a higher percentage of the power budget should be allocated to pilot signals than with a lower number of antennas.

Original languageEnglish
Title of host publicationIEEE International Conference on Communications
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2590-2596
Number of pages7
Volume2015-September
ISBN (Print)9781467364324
DOIs
Publication statusPublished - Sep 9 2015
EventIEEE International Conference on Communications, ICC 2015 - London, United Kingdom
Duration: Jun 8 2015Jun 12 2015

Other

OtherIEEE International Conference on Communications, ICC 2015
CountryUnited Kingdom
CityLondon
Period6/8/156/12/15

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Networks and Communications

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  • Cite this

    Fodor, G., Di Marco, P., & Telek, M. (2015). On the impact of antenna correlation on the pilot-data balance in multiple antenna systems. In IEEE International Conference on Communications (Vol. 2015-September, pp. 2590-2596). [7248715] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICC.2015.7248715