Balanced diversity

H - Electricity – 04 – B

Patent

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Details

H04B 7/08 (2006.01)

Patent

CA 2294905

The present invention relates to a method for diversity selection for antenna paths in a radio receiver (R2; R3) comprising a plurality of antennas (A, B; N) and a selection switch (SW; SWI) for selecting one of said antennas, which method comprises the following steps: generation of average interference powers (AIA, AIB; AIN) of antenna signals received over a period of time to each of the antenna's (A, B; N); generation of carrier signal strength (CSA, CSB; CSN) of radio signals (RSA, RSB) received to each of the antenna's (A, B; N); selecting one of the antennas (A, B; N) in dependence of the best carrier signal strength (CSA, CSB; CSN) in relation to average interference signal strength (AIA, AIB; AIN).

L'invention concerne un procédé de sélection de diversité pour des liaisons d'antenne dans un récepteur radio (R2; R3) comprenant une pluralité d'antennes (A, B; N) et un commutateur sélectif (SW; SWI) permettant la sélection d'une de ces antennes. Ce procédé consiste à - faire pour chacune des antennes (A, B; N) la moyenne des puissances d'interférences (AIA, AIB; AIN) pour les signaux d'antenne reçus pendant une certaine période; - créer pour chaque antenne (A, B; N) une puissance de signal de porteuse (CSA, CSB; CSN) pour les signaux radio (RSA, RSB) reçus; - sélectionner une des antennes (A, B; N) en fonction de la meilleure puissance de signal de porteuse (CSA, CSB; CSN) en liaison avec la puissance moyenne des signaux d'interférences (AIA, AIB, AIN).

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