Uppsala universitet

Analysis of the LS Estimation Error on a Rayleigh Fading Channel.

Torbjörn Ekman

IEEE Vehicular Technology Conference - VTC'01-Spring, Rhodes, Greece,
May 6-9 2001, pp. 372-376. © 2001 IEEE


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.

Related publications:
PhD Thesis by Torbjörn Ekman, Oct. 2002.
VTC'01-Spring paper on prediction of broadband channels.
Licenciate Thesis by Torbjörn Ekman.

Source:
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