Cdma system transmission matrix coefficient calculation

H - Electricity – 04 – J

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H04J 13/00 (2006.01) H04B 1/69 (2006.01) H04B 1/707 (2006.01) H04B 7/216 (2006.01) H04L 25/02 (2006.01) H04Q 7/30 (2006.01) H04Q 7/32 (2006.01)

Patent

CA 2490810

A hermetian of a system response matrix is to be determined. Spreading codes, channel specific multipliers and channel impulse responses are provided. The channel code specific multipliers have real and imaginary values. Channel codes being a combination of a real spreading code, a complex scrambling code and a sign of the channel code specific multiplier. Real and imaginary components (JAD and AC) of an approximate hermetian of the system response matrix are determined. The channel code specific multipliers are applied to the real and imaginary components (JAD and AC) of a result of the convolutions to derive the hermetian of the system response matrix.

L'invention concerne la détermination d'un espace hermitien d'une matrice de réponse d'un système, ainsi que des codes de diffusion, des multiplicateurs spécifiques de canaux et des réponses à des impulsions de canaux. Ces multiplicateurs spécifiques de codes de canaux ont des valeurs réelles et imaginaires. Des codes de canaux constituent une combinaison d'un code de diffusion réel, d'un code d'embrouillage de complexes, et d'un signe du multiplicateur spécifique de code de canal. Des composants réels et imaginaires (JAD et AC) d'un espace hermétien approximatif de la matrice de réponse du système sont déterminés. Ces multiplicateurs spécifiques de codes de canaux sont appliqués aux composants réels et imaginaires (JAD et AC) d'un résultat des convolutions afin de dériver l'espace hermétien de la matrice de réponse du système.

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