link Dedicated Physical Channels The uplink DPCCH/DPDCH may use either long or short scrambling codes with differ- ent constituent codes in each case. The UTRA Physical Layer Design From [8], when using long scrambling codes we define the nth uplink DPCCH/DPDCH scrambling code denoted Sdpch,n as Sdpch,n (i) = (4.22) where the lowest index corresponds to the chip transmitted first in time and Section 4.3.5.1 defines Clong,n* Likewise, when using short scrambling codes we define the nth uplink DPCCH/DPDCH scrambling code denoted Sdpch,n as (i)=Cshort.n(i),i=0,1,..,38399, = (4.23) where the lowest index corresponds to the chip transmitted first in time and Section 4.3.5.2 defines Cshort,n 4.3.5.4 PRACH and PCPCH Message Part Scrambling Code The PRACH message part uses 10 ms long scrambling code, and there are 8192 possi- ble PRACH scrambling codes. From [8] we define the nth PRACH message part scrambling code, denoted Sr-msg,n where n = 0,1,...,8191, based on the long scrambling sequence as 0,1,...,38399, (4.24) where the lowest index corresponds to the chip transmitted first in time and Section 4.3.5.1 defines Clong.ru The message part scrambling code has a one-to-one correspondence to the scrambling code utilized in the preamble part. For one PRACH, we use the same code number in both scrambling codes, i.e. if the PRACH preamble scrambling code uses Sr-pre,m then the PRACH message part scrambling code uses Sr-msg,m where the number m is the same for both codes [8]. As in PRACH, PCPCH uses 10 ms long scrambling codes in the message part. They are cell-specific and each scrambling code has a one-to-one correspondence to the signature sequence and the access sub-channel utilized by the access preamble part. Both long and short scrambling codes may scramble the PCPCH message part. We define up to uplink-scrambling codes per cell and up to 32768 different PCPCH scrambling codes in the system. For the long scrambling sequence we define the nth PCPCH message part scrambling code(Sc-msg,nn=8192,8193,...,40959)as Sc-msg,n 