Method and apparatus for interference signal code power and...

Details Method and apparatus for interference signal code power and... Method and apparatus for interference signal code power and...

H - Electricity

04

J

H04J 3/00 (2006.01) H04B 1/707 (2006.01) H04J 1/00 (2006.01) H04L 1/20 (2006.01)

Patent

CA 2460799

Method and apparatus for interference signal code power noise variance estimation employing a reduced number of samples utilizing the equation (15), where (14), where (I), where (I), where (12) and where (13). As an alternative, a recursive technique may be employed wherein the noise variance is estimated from the ignored coefficients of the estimated channel output and upgraded recursively as per the following: (II) where .hcirc.i(j) are the channel estimates after the post processing and the noise variance estimates .sigma.n-12, and the initial values of .hcirc.i(j) are all zeros.

L'invention concerne un procédé et un appareil pour estimer la puissance de code de signal parasite et la variance du bruit. Selon l'invention, on utilise un nombre réduit d'échantillons en appliquant l'équation (15), dans laquelle équation (14), où (I), équation (12), où équation (13). En alternative, une technique récursive peut être utilisée, selon laquelle la variance du bruit est estimée à partir des coefficients ignorés de l'estimation de la sortie de canal et réajustée de manière récursive selon l'équation suivante: (II) dans laquelle h¿i??j¿ sont les estimations de canal après le post-traitement et les estimations de variance du bruit .sigma. ¿n-1??2¿, les valeurs initiales de h¿i??j¿ étant toutes nulles.

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