Patent ID: 7489722

Claim:
An apparatus for production of scrambling codes used for scrambling binary signals that are transmitted in physical channels in a mobile radio system, and for production of preambles sent on a physical channel in order to control the access to that particular physical channel, comprising: a scrambling code generator configured to generate scrambling codes, and comprising at least one output at which the scrambling codes are emitted; a preamble generator configured to generate non-scrambled preambles, and comprising at least one output at which the non-scrambled preambles are emitted; and at least one multiplier configured to scramble the non-scrambled preambles using associated scrambling codes from the scrambling code generator, wherein each multiplier comprises a first input, which is connected to the output of the scrambling code generator, a second input, which is connected to the output of the preamble generator, and an output at which the scrambled preambles are emitted; wherein the scrambling code generator comprises a device configured to shift binary code sequences in time, from which code sequences the scrambling codes are formed, and wherein the device shifts the binary code sequences in time as a function of associated physical channels.