Apparatus and method for generating scrambling code in UMTS mobile communication system

In UMTS mobile communication system downlink transmitter's harassing frequency code generation device, which uses a main to harass the frequency code discrimination base station, multiple harass the frequency code discrimination channel secondarily. The device for generating comprises a first m- sequence's first m- sequencer generating and second m- sequence the second m- sequencer. The first type first and second m- sequence adding together, a production and be a frequency code. Each of the first masking part transfer the first m- sequence, and first masking part of each of the plurality of second masking part transfer the second m- sequence. Each of the plurality of second of the first shift m- sequences with the corresponding second m- sequence adding of the first m- sequence. , Wherein the output of the second type generating multiple harass the frequency secondarily code.