Channel estimation for stationary fading channels: Orthogonal versus superimposed pilots

A. Taufiq Asyhari; Stephan Ten Brink

doi:10.1109/ISWCS.2014.6933322

Channel estimation for stationary fading channels: Orthogonal versus superimposed pilots

A. Taufiq Asyhari, Stephan Ten Brink

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding › peer-review

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 language	English
Title of host publication	2014 11th International Symposium on Wireless Communications Systems, ISWCS 2014 - Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	70-74
Number of pages	5
ISBN (Electronic)	9781479958634
DOIs	https://doi.org/10.1109/ISWCS.2014.6933322
Publication status	Published - 1 Jan 2014
Externally published	Yes
Event	2014 11th International Symposium on Wireless Communications Systems - Barcelona, Spain Duration: 26 Aug 2014 → 29 Aug 2014 Conference number: 11

Conference

Conference	2014 11th International Symposium on Wireless Communications Systems
Abbreviated title	ISWCS 2014
Country/Territory	Spain
City	Barcelona
Period	26/08/14 → 29/08/14

ASJC Scopus subject areas

Electrical and Electronic Engineering
Computer Networks and Communications

Access to Document

10.1109/ISWCS.2014.6933322

Cite this

Channel estimation for stationary fading channels: Orthogonal versus superimposed pilots. / Asyhari, A. Taufiq; Ten Brink, Stephan.
2014 11th International Symposium on Wireless Communications Systems, ISWCS 2014 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2014. p. 70-74 6933322.

Research output: Chapter in Book/Report/Conference proceeding › Conference proceeding › peer-review

Asyhari, AT & 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., 6933322, Institute of Electrical and Electronics Engineers Inc., pp. 70-74, 2014 11th International Symposium on Wireless Communications Systems, Barcelona, Spain, 26/08/14. https://doi.org/10.1109/ISWCS.2014.6933322

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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.",

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AB - 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.

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Channel estimation for stationary fading channels: Orthogonal versus superimposed pilots

Abstract

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ASJC Scopus subject areas

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