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Pilot-symbol patterns for MIMO OFDM systems under time varying channels

My Abdelkader Youssefi, Jamal El Abbadi
2015 2015 International Conference on Electrical and Information Technologies (ICEIT)  

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This paper presents a new approach to achieve optimal training sequences (OTS) in terms of minimizing the mean-square channel estimation error for spectrally efficient MIMO OFDM systems. It is shown that the OTS are equi-powered, equi-spaced and position orthogonal. However, in special cases we can find that required conditions to achieve optimal pilot design are not satisfied, this means the optimum pilot is unachievable. In this paper, an algorithm is proposed to achieve suboptimum pilot
more » ... n under time varying channels. To offer high throughput gains, we propose an adaptive pilot scheme in order to optimally use pilot tones over time varying channels.
doi:10.1109/eitech.2015.7162929 fatcat:4feol5xy4fg3zbetziwbyouhyi
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My Abdelkader Youssefi, Jamal El Abbadi. "Pilot-symbol patterns for MIMO OFDM systems under time varying channels." 2015 International Conference on Electrical and Information Technologies (ICEIT) (2015)