FIELD: generating scrambling codes in mobile communication system. SUBSTANCE: device generating scrambling codes for downlink transmitter in universal mobile electrical communication system has first m-sequence generator and second sequence generator; first adder; plurality of first and second masking sections; and plurality of second adders where plurality of secondary scrambling codes is generated at their outputs. Scrambling codes integrated into blocks of desired length are generated using masking function. EFFECT: minimized intricate hardware requirement. 30 cl, 11 dwg
