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MMSE Noise Power and SNR Estimation for OFDM Systems
 

Summary: MMSE Noise Power and SNR Estimation for
OFDM Systems
Tevfik Y¨ucek and H¨useyin Arslan
Department of Electrical Engineering, University of South Florida
4202 E. Fowler Avenue, ENB-118, Tampa, FL, 33620
Abstract-- This paper proposes a minimum mean-square error
(MMSE) filtering technique to estimate the noise power that
takes into account the variation of the noise statistics across the
orthogonal frequency division multiplexing (OFDM) sub-carrier
index as well as across OFDM symbols. The proposed method
provides many local estimates that allow tracking of the variation
of the noise statistics in frequency and time. The MMSE filter
coefficients are obtained from the mean-squared-error (MSE)
expression, which can be calculated using the noise statistics.
Evaluation of the performance with computer simulations shows
that the proposed method tracks the local statistics of the noise
more efficiently than conventional methods.
I. INTRODUCTION
Orthogonal Frequency Division Multiplexing (OFDM) is
a multi-carrier modulation scheme in which the wide trans-

  

Source: Arslan, Hüseyin - Department of Electrical Engineering, University of South Florida

 

Collections: Engineering