Optimal training for MIMO time-selective fading channels

Carrier frequency offsets and mobility induced Doppler shifts introduce time-selective in wireless links. To mitigate the resulting time-selective, in this paper, optimal training sequence was designed for linear minimum mean square error (LMMSE) estimation of multi-input multi-output time-selective...

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Bibliographic Details
Main Authors: Jiangzhang Zhu, Shuangchun Wen, Hong Wen
Format: Conference Proceeding
Language:English
Subjects:
Analytical models
Channel estimation
Doppler shift
Estimation error
Fading
Frequency
Mean square error methods
MIMO
Numerical analysis
Numerical simulation
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Summary:Carrier frequency offsets and mobility induced Doppler shifts introduce time-selective in wireless links. To mitigate the resulting time-selective, in this paper, optimal training sequence was designed for linear minimum mean square error (LMMSE) estimation of multi-input multi-output time-selective channels by maximizing a lower bound on the average capacity while at the same time minimizing the mean-square channel estimation error. Optimal number and placement of pilot symbols are also analyzed. Numerical analysis and simulation corroborate our theoretical designs.
ISSN:2161-9646
DOI:10.1109/WCNM.2005.1544003