Pilot-aided bayesian MMSE channel estimation for OFDM systems: Algorithm and performance analysis

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Küçük Resim

Tarih

2004

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

IEEE

Erişim Hakkı

info:eu-repo/semantics/closedAccess

Araştırma projeleri

Organizasyon Birimleri

Dergi sayısı

Özet

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.

Açıklama

IEEE Communications Society;ICC Globecom

Anahtar Kelimeler

Algorithms, Attenuation, Bayes methods, Bayesian channel estimation, Bayesian methods, Channel estimation, Channel estimator, Channel capacity, Closed-form expression, Communication channels (information theory), Computational complexity, Computational load, Computational methods, Digital video broadcasting, Discrete multipath channel, Discrete multipath fading channel, Fading, Fading (radio), Fading channels, Frequency estimation, Frequency modulation, Intersymbol interference, Karhunen-Loeve orthogonal expansion, Karhunen-Loeve transforms, Least mean squares methods, Matrix algebra, Minimum Bayesian MSE, Minimum mean square error (MMSE), Minimum mean square error estimation algorithm, MMSE channel estimation, Multipath channels, OFDM, OFDM modulation, OFDM systems, Orthogonal frequency division multiplexing, Performance analysis, Pilot-aided Baysein MMSE, Pilot-aided channel estimation, Signal interference, Stochastic Cramer-Rao bound, Uncorrelated series expansion coefficients, Wireless telecommunication systems, Wireless systems

Kaynak

GLOBECOM - IEEE Global Telecommunications Conference

WoS Q Değeri

N/A

Scopus Q Değeri

N/A

Cilt

4

Sayı

Künye

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