Title :
Analysis of the LS estimation error on a Rayleigh fading channel
Author_Institution :
Signals & Syst., Uppsala Univ., Sweden
Abstract :
A channel in a wireless communication link is often treated as time invariant over an estimation interval, during which a least squares estimate of the channel is calculated, using training symbols. By a second order Taylor expansion of the channel, the estimation error due to time variation, can be approximated as a bias and an excess error which are due to the curvature and linear change of the channel, respectively. Approximate expressions for the variance of the estimation error in a Rayleigh fading channel, are presented here
Keywords :
Rayleigh channels; error analysis; least squares approximations; mobile radio; parameter estimation; time-varying channels; LS estimation error; Rayleigh fading channel; bias; curvature; estimation interval; excess error; least squares estimate; linear change; second order Taylor expansion; time variation; wireless communication link; Channel estimation; Estimation error; Fading; Finite impulse response filter; High level synthesis; Land mobile radio; Least squares approximation; Noise measurement; Taylor series; Vectors;
Conference_Titel :
Vehicular Technology Conference, 2001. VTC 2001 Spring. IEEE VTS 53rd
Conference_Location :
Rhodes
Print_ISBN :
0-7803-6728-6
DOI :
10.1109/VETECS.2001.944867
