Cyclic-prefix based noise variance and power delay profile estimation for OFDM systems

Tao Cui Tao Cui,C Tellambura

doi:10.1109/pacrim.2005.1517340

Cyclic-prefix based noise variance and power delay profile estimation for OFDM systems

Tao Cui Tao Cui, C Tellambura

https://doi.org/10.1109/pacrim.2005.1517340

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Publication Date: Oct 17, 2005

Citations: 2

Affiliation: University of Alberta

#Orthogonal Frequency Division Multiplexing #Orthogonal Frequency Division Multiplexing Systems + Show 8 more

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Abstract

In this paper, we derive cyclic-prefix (CP) based parameter estimators for orthogonal frequency division multiplexing (OFDM) systems. Signal correlation due to the use of the CP is exploited without requiring additional pilot symbols. Noise variance, power delay profile, the number of paths and the signal to noise ratio are estimated. The proposed algorithms can be readily used for applications such as minimum mean-square error (MMSE) equalization.

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