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Member
Reputation: 49
Difference between Scrambling code and Channelization code
Dear Everybody,
Could someone explain in layman term what is the difference between Scrambing code and Chanelization code in UMTS? I am confused after reading from the internet.
Thanks.
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2010-11-16 05:02 PM
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Senior Member
Reputation: 502
Re: Difference between Scrambling code and Channelization code
Originally Posted by
arban
Dear Everybody,
Could someone explain in layman term what is the difference between Scrambing code and Chanelization code in UMTS? I am confused after reading from the internet.
Thanks.
Scrambling code is used to make differntiation for cells and Channalization code is used to make differentiation of service between MS in the same physical channel.
BR
RF
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Member
Reputation: 49
Re: Difference between Scrambling code and Channelization code
Originally Posted by
RF engineer
Scrambling code is used to make differntiation for cells and Channalization code is used to make differentiation of service between MS in the same physical channel.
BR
RF
Thanks bro for the prompt reply. can a user have more than one chanellization code in softer handover? thanks.
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Senior Member
Reputation: 502
Re: Difference between Scrambling code and Channelization code
Originally Posted by
arban
Thanks bro for the prompt reply. can a user have more than one chanellization code in softer handover? thanks.
normally multiple scrambing code give more channelization code per sector.
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Junior Member
Reputation: 10
Re: Difference between Scrambling code and Channelization code
hi,....
you are doing good.
keep it up and thanks for sharing
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Junior Member
Reputation: 14
Re: Difference between Scrambling code and Channelization code
ammmmm.... channelization codes are parameters that can be adjusted if you want to increase the throughput in HSDPA or 3G
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Member
Reputation: 20
Re: Difference between Scrambling code and Channelization code
Hope below helps!!!
same in breif...
both (different types) scambling code & ovsf codes are used in DL & UL.
scambling codes:
+ In Downlink
They are used to identify node-b sectors/antenna in DL.There are two type of scambling codes in DL PSC & SSC.
Primary scarmbling code (PSC) - a sector is identifed by the same.
There are total 512 primary scarmbling codes only one PSC/sector.these 512 codes are divided in a group of 64 ,each containing 8 PSC.MS looks for the CPICH channel which carries PSC for that specicfc cell to identify that sector.
Secondary scarmbling code - there can be many ,normally used in beamforming cases.
+ In Uplink
in uplink the each MS is uniquly idenified by the long scambling code,which it gets during RRC_con_setup.
OVSF CODES:
+ In Downlink
They are used to channalize the subscribe in Downlink ,also the Spreading facor or the length of the code also decide the speed of teh channel.smaller the length higher data can be transmitted & vice-versa.
+ In Uplink
different ovsf code length on control & data channel.
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Junior Member
Reputation: 10
Re: Difference between Scrambling code and Channelization code
Channelization Codes:
UL :to Separate Physical n control data from same terminal
DL:To separate connection to diff terminals in same cell
Scrambling Codes:
UL: Separate diff users
DL: Separate Diff Node Bs.
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Junior Member
Reputation: 11
Re: Difference between Scrambling code and Channelization code
can any one support me to provide the 3G basic docs, How the technology works & what thing affect the output with terms details.
Thanks in advance. Kindly support.
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Member
Reputation: 195
Re: Difference between Scrambling code and Channelization code
SC=for NodeB to separate the cells
I believe the channelization you are saying was the UARFCN..its the channel for UL and DL
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