%0 Journal Article
%T CRLBs for Pilot-Aided Channel Estimation in OFDM System under Gaussian and Non-Gaussian Mixed Noise
%A J.Y. Huang
%A P. Wang
%A X.F. Shen
%J Radioengineering
%D 2012
%I Spolecnost pro radioelektronicke inzenyrstvi
%X The determination of Cramer-Rao lower bound (CRLB) as an optimality criterion for the problem of channel estimation in wireless communication is a very important issue. Several CRLBs on channel estimation have been derived for Gaussian noise. However, a practical channel is affected by not only Gaussian background noise but also non-Gaussian noise such as impulsive interference. This paper derives the deterministic and stochastic CRLBs for Gaussian and non-Gaussian mixed noise. Due to the use of the non-parametric kernel method to build the PDF of non-Gaussian noise, the proposed CRLBs are suitable for practical channel environments with various noise distributions.
%K Channel estimation
%K orthogonal frequency-division multiplexing (OFDM)
%K Cramer-Rao lower bound (CRLB)
%K Mixed noise
%U www.radioeng.cz/fulltexts/2012/12_04_1117_1124.pdf