Channel estimation for stationary fading channels: Orthogonal versus superimposed pilots

A. Taufiq Asyhari, Stephan Ten Brink

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

2 Citations (Scopus)

Abstract

Two training schemes namely the orthogonal pilot scheme (OPS) and the superimposed pilot scheme (SPS) are compared in terms of achievable rates in multiple-antenna fading channels with memory. For both schemes, we show that the achievable rate depends on the number of antennas, signal-to-noise ratio (SNR) and fading speed via the channel estimation error variance and the fraction of time for data transmission. To guarantee positive achievable rates, we show that for the OPS the number of transmit antennas that can be accommodated is limited by the fading speed whereas for the SPS the number of antennas can be arbitrary. For most antenna configurations, we observe that while the SPS is superior in the low-SNR and fastfading regimes, the OPS is superior in other regimes. However, for a few number of antennas (e.g., single antenna), the SPS may also be superior in the low-SNR and slow-fading regimes.

Original languageEnglish
Title of host publication2014 11th International Symposium on Wireless Communications Systems, ISWCS 2014 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages70-74
Number of pages5
ISBN (Electronic)9781479958634
DOIs
Publication statusPublished - 1 Jan 2014
Externally publishedYes
Event2014 11th International Symposium on Wireless Communications Systems - Barcelona, Spain
Duration: 26 Aug 201429 Aug 2014
Conference number: 11

Conference

Conference2014 11th International Symposium on Wireless Communications Systems
Abbreviated titleISWCS 2014
CountrySpain
CityBarcelona
Period26/08/1429/08/14

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Networks and Communications

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  • Cite this

    Asyhari, A. T., & Ten Brink, S. (2014). Channel estimation for stationary fading channels: Orthogonal versus superimposed pilots. In 2014 11th International Symposium on Wireless Communications Systems, ISWCS 2014 - Proceedings (pp. 70-74). [6933322] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISWCS.2014.6933322