EM-based joint time delay and channel estimation for cooperative communications

Serkan Ak; Niyazi Odabasioglu; Murat Uysal

doi:10.1109/ISWCS.2011.6125316

EM-based joint time delay and channel estimation for cooperative communications

Serkan Ak, Niyazi Odabasioglu, Murat Uysal

Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

In this paper, we study joint time delay and channel estimation for a cooperative communication system with amplify-and-forward (AF) relaying. The proposed joint estimator is based on Expectation-Maximization (EM) algorithm and presents a low-complexity solution for iterative maximum likelihood (ML) estimation. Our simulation results demonstrate that the performance of proposed cooperative system lies within 0.5dB of the genie bound (i.e., perfect knowledge of time delays and fading coefficients) at a target bit error rate of 10 ⁴ assuming the deployment of 4 pilot symbols and 3 iterations.

Original language	English (US)
Title of host publication	ISWCS'11 - 2011 8th International Symposium on Wireless Communication Systems, Proceedings
Pages	91-95
Number of pages	5
DOIs	https://doi.org/10.1109/ISWCS.2011.6125316
State	Published - 2011
Event	2011 8th International Symposium on Wireless Communication Systems, ISWCS'11 - Aachen, Germany Duration: Nov 6 2011 → Nov 9 2011

Publication series

Name	Proceedings of the International Symposium on Wireless Communication Systems
ISSN (Print)	2154-0217
ISSN (Electronic)	2154-0225

Conference

Conference	2011 8th International Symposium on Wireless Communication Systems, ISWCS'11
Country/Territory	Germany
City	Aachen
Period	11/6/11 → 11/9/11

Keywords

Channel estimation
cooperative communications
expectation-maximization algorithm
time synchronization

ASJC Scopus subject areas

Computer Networks and Communications
Electrical and Electronic Engineering
Communication

Access to Document

10.1109/ISWCS.2011.6125316

Cite this

Ak, S., Odabasioglu, N., & Uysal, M. (2011). EM-based joint time delay and channel estimation for cooperative communications. In ISWCS'11 - 2011 8th International Symposium on Wireless Communication Systems, Proceedings (pp. 91-95). Article 6125316 (Proceedings of the International Symposium on Wireless Communication Systems). https://doi.org/10.1109/ISWCS.2011.6125316

EM-based joint time delay and channel estimation for cooperative communications. / Ak, Serkan; Odabasioglu, Niyazi; Uysal, Murat.
ISWCS'11 - 2011 8th International Symposium on Wireless Communication Systems, Proceedings. 2011. p. 91-95 6125316 (Proceedings of the International Symposium on Wireless Communication Systems).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Ak, S, Odabasioglu, N & Uysal, M 2011, EM-based joint time delay and channel estimation for cooperative communications. in ISWCS'11 - 2011 8th International Symposium on Wireless Communication Systems, Proceedings., 6125316, Proceedings of the International Symposium on Wireless Communication Systems, pp. 91-95, 2011 8th International Symposium on Wireless Communication Systems, ISWCS'11, Aachen, Germany, 11/6/11. https://doi.org/10.1109/ISWCS.2011.6125316

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AB - In this paper, we study joint time delay and channel estimation for a cooperative communication system with amplify-and-forward (AF) relaying. The proposed joint estimator is based on Expectation-Maximization (EM) algorithm and presents a low-complexity solution for iterative maximum likelihood (ML) estimation. Our simulation results demonstrate that the performance of proposed cooperative system lies within 0.5dB of the genie bound (i.e., perfect knowledge of time delays and fading coefficients) at a target bit error rate of 10 4 assuming the deployment of 4 pilot symbols and 3 iterations.

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EM-based joint time delay and channel estimation for cooperative communications

Abstract

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Conference

Keywords

ASJC Scopus subject areas

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