Adaptive Kalman receiver for OFDM systems with transmit diversity in mobile wireless channels

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Tarih

2004-12

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

Walter De Gruyter GMBH

Erişim Hakkı

info:eu-repo/semantics/closedAccess

Araştırma projeleri

Organizasyon Birimleri

Dergi sayısı

Özet

A new joint channel tracking and symbol detection scheme is proposed in this paper for pilot symbol assisted transmit diversity OFDM systems by exploiting the correlation of the adjacent subchannels. Modelling the channel frequency response of every subcarrier corresponding to each transmit antenna as random processes, we employ Kalman filters for both channel tracking and subsequent decoding with diversity gain. Among different stochastic models, the AR model is adopted herein for channel dynamics. Since the proposed adaptive receiver uses two Kalman filters to track the variations of the channel and subsequently to detect the information symbols, they are combined in the coupled receiver structure. Finally the performance of the proposed method is studied through experimental results.

Açıklama

Anahtar Kelimeler

Antennas, Channel estimation, Channel estimator, Channel tracking, Channel capacity, Diversity, Frequency response, Information symbols, Kalman filter, Kalman filtering, Mathematical models, Mobile telecommunication systems, Mobile wireless channels, OFDM, Orthogonal frequency division multiplexing, Random processes, Wireless telecommunication systems

Kaynak

Frequenz

WoS Q Değeri

Q4
Q4

Scopus Q Değeri

Q3

Cilt

58

Sayı

11-12

Künye