FIELD: signal transmission over parallel channels in code-division multiple-access system. SUBSTANCE: in case of concurrent transmission of data related to two code-division channels data related to first channel are extended concurrently when using first extension code (C1) and second extension code (C0); data related to second channel are concurrently extended using first extension code (C1) and second extension code (C0); power level of signal presenting mentioned data related to second channel changes upon extension relative to power level of signal presenting data related to first channel upon extension and signal transmitted is compiled from extended data related to first channel and from those related to second channel whose power level changed. EFFECT: enhanced effectiveness. 11 cl, 11 dwg
