FIELD: information technology.
SUBSTANCE: invention discloses a communication method and device for selecting the number of code channels and the associated expansion coefficient for CDMA transmission. According to the invention, a set of permissible pairs of parametres, where the parametres are the number of code channels and the associated expansion coefficient, is determined in accordance with at least one first selection criterion. The pair of parametres from the set of permissible pairs of parametres for CDMA transmission is then selected in accordance with at least one second selection criterion. In that selection process, the expansion coefficient is used as a second selection criterion with a higher value, preferably compared to a lower value, if both expansion coefficients are lower or equal to a threshold expansion coefficient value.
EFFECT: invention takes into account the fact that in defined mode, low expansion coefficients give rise to a forbidden high processing load and lead to increase in intersymbol noise.
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