Complexity cutback of multiple antenna channel estimation using orthogonal matrix triangularization

Authors:
Mohammad Tariqul Islam;Mostafa Wasiuddin Numan;Norbahiah Misran;M. B. I. Reaz;Ajmal Hussain Shah;Mohd. Alauddin Mohd. Ali;J. S. Mandeep
Affiliations:
Institute of Space Science, Angkasa, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia;Dept. of Electrical, Electronic and Systems Engineering, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia;Institute of Space Science, Angkasa, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia and Dept. of Electrical, Electronic and Systems Engineering, Universiti Kebangsaan Malaysia, Bangi, S ...;Dept. of Electrical, Electronic and Systems Engineering, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia;Dept. of Electrical, Electronic and Systems Engineering, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia;Institute of Space Science, Angkasa, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia;Institute of Space Science, Angkasa, Universiti Kebangsaan Malaysia, Bangi, Selangor, Malaysia and Dept. of Electrical, Electronic and Systems Engineering, Universiti Kebangsaan Malaysia, Bangi, S ...
Venue:
TELE-INFO'11/MINO'11/SIP'11 Proceedings of the 10th WSEAS international conference on Telecommunications and informatics and microelectronics, nanoelectronics, optoelectronics, and WSEAS international conference on Signal processing
Year:
2011

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Abstract

This paper presents a proficient way-out to cutback channel estimation complexity of multiple antenna wireless system using orthogonal matrix triangularization to eliminate matrix inversion that incurs higher complexity. Complexity evaluation of the proposed approach is validated through MATLAB simulations in terms of mathematical operations, which shows that the method noticeably outperforms training based least squares (LS) estimation at a lower complexity and represents a good solution of channel estimation.