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Time-varying channel estimation for MIMO-OFDM systems

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2 Author(s)
Erol Onen ; Elektrik- Elektronik Mü;hendisli¿i Bölümü, ¿stanbul Üniversitesi, Avc¿lar 34320, Turkey ; Aydin Akan

Multiple input-multiple output (MIMO) systems hold the potential to drastically improve the spectral effciency and link reliability in future wireless communications systems. A particularly promising candidate for next-generation fixed and mobile wireless systems is the combination of MIMO with Orthogonal Frequency Division Multiplexing (OFDM). OFDM has become the standard method because of its advantages over single carrier modulation schemes on multipath, frequency selective fading channels. In this paper, we present a time-varying channel modeling and estimation method based on the Discrete Evolutionary Transform. Performance of the proposed method is evaluated on different levels of channel noise, and Doppler frequency shifts.

Published in:

2008 IEEE 16th Signal Processing, Communication and Applications Conference

Date of Conference:

20-22 April 2008