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  •   DSpace@Işık
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  • Mühendislik Fakültesi / Faculty of Engineering
  • Elektrik-Elektronik Mühendisliği Bölümü / Department of Electrical-Electronics Engineering
  • MF - Bildiri Koleksiyonu | Elektrik-Elektronik Mühendisliği Bölümü / Department of Electrical-Electronics Engineering
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Pilot-aided bayesian MMSE channel estimation for OFDM systems: Algorithm and performance analysis

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Date

2004

Author

Şenol, Habib
Çırpan, Hakan Ali
Panayırcı, Erdal

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Citation

Şenol, H., Çırpan, H. A. & Panayırcı, E. (2004). Pilot-aided bayesian MMSE channel estimation for OFDM systems: Algorithm and performance analysis. Paper presented at the GLOBECOM - IEEE Global Telecommunications Conference, 4 2361-2365 Vol.4. doi:10.1109/GLOCOM.2004.1378430

Abstract

This paper proposes a computationally efficient, pilot-aided minimum mean square error (MMSE) channel estimation algorithm for OFDM systems. The proposed approach employs a convenient representation of the discrete multipath fading channel based on the Karhunen-Loeve (KL) orthogonal expansion and estimates uncorrelated series expansion coefficients. Moreover, optimal rank reduction is achieved in the proposed approach by exploiting the optimal truncation property of the KL expansion resulting in a smaller computational load on the estimation algorithm. The performance of the proposed approach is studied through analytical and experimental results. We first consider the stochastic Cramer-Rao bound and derive the closed-form expression for the random KL coefficients. We then exploit the performance of the MMSE channel estimator based on the evaluation of minimum Bayesian MSE.

Source

GLOBECOM - IEEE Global Telecommunications Conference

Volume

4

URI

https://hdl.handle.net/11729/2046
https://dx.doi.org/10.1109/GLOCOM.2004.1378430

Collections

  • MF - Bildiri Koleksiyonu | Elektrik-Elektronik Mühendisliği Bölümü / Department of Electrical-Electronics Engineering [222]
  • Scopus İndeksli Bildiri Koleksiyonu [456]

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