1. A base station, comprising:
a first base-station-specific scrambling code generating unit configured to generate a first base-station-specific scrambling code for randomizing a pilot channel;
a second base-station-specific scrambling code generating unit configured to generate a second base-station-specific scrambling code for randomizing predetermined physical channels other than the pilot channel;
a sector-specific orthogonal sequence generating unit configured to generate a sector-specific orthogonal sequence;
a multiplication control unit configured to output the second base-station-specific scrambling code or a result of multiplying the second base-station-specific scrambling code by the sector-specific orthogonal sequence for each of the predetermined physical channels based on whether each of the predetermined physical channels requires soft combining; and
a multiplying unit configured to multiply each of the predetermined physical channels by the, second base-station-specific scrambling code or the result of multiplying the second base-station-specific scrambling code by the sector-specific orthogonal sequence that is output from the multiplication control unit,
wherein the first base-station-specific scrambling code and the second base-station-specific scrambling code have a one-to-one correspondence.
2. The base station as claimed in claim 1, wherein the multiplication control unit is configured to output the second base-station-specific scrambling code without multiplying by the sector-specific orthogonal sequence for a predetermined physical channel requiring soft combining.
3. The base station as claimed in claim 1, wherein the multiplication control unit is configured to multiply the second base-station-specific scrambling code by the sector-specific orthogonal sequence and to output the multiplication result for a predetermined physical channel not requiring soft combining.
4. The base station as claimed in claim 1, wherein the multiplication control unit is configured to use a scrambling code unique to each mobile station to randomize a shared data channel.
5. The base station as claimed in claim 1, further comprising:
an MBMS-specific scrambling code generating unit configured to generate an MBMS-specific scrambling code for randomizing an MBMS channel.
6. The base station as claimed in claim 1, further comprising:
a pilot channel generating unit configured to generate a sector-specific orthogonal sequence for each sector as the pilot channel.
7. A downlink scrambling method, comprising the steps of:
randomizing a pilot channel by multiplying the pilot channel by a first base-station-specific scrambling code;
randomizing predetermined physical channels other than the pilot channel by multiplying the predetermined physical channels by a scrambling code; and
transmitting a signal including the pilot channel and the predetermined physical channels other than the pilot channel via downlink, wherein
a second base-station-specific scrambling code is used as the scrambling code to multiply a predetermined physical channel requiring soft combining;
a result of multiplying the second base-station-specific scrambling code by a sector-specific orthogonal sequence is used as the scrambling code to multiply a predetermined physical channel not requiring soft combining; and
the first base-station-specific scrambling code and the second base-station-specific scrambling code have a one-to-one correspondence.
8. The downlink scrambling method as claimed in claim 7, further comprising the step of:
randomizing a shared data channel by multiplying the shared data channel by the result of multiplying the second base-station-specific scrambling code by the sector-specific scrambling sequence or a user-specific scrambling code.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A process for separating a plurality of naphtha components, comprising:
A) feeding a first column, comprising a dividing imperforate wall with one surface facing a feed and another surface facing a side stream wherein the wall extends a significant portion of the column height to divide the portion into at least two substantially vertical, parallel contacting sections;
B) receiving a feed in a second column from the first column or providing a feed to a first column from said second column communicating with the first column wherein the second column is non-divided; and
C) providing at least four naphtha product streams.
2. The process according to claim 1, wherein the second column receives a side stream as a feed from the first column.
3. The process according to claim 2, wherein the first column provides a light naphtha as an overhead stream, and a heavy naphtha as a bottom stream.
4. The process according to claim 2, wherein the second column provides a medium naphtha as an overhead stream and an aromatic naphtha as a bottom stream.
5. The process according to claim 1, wherein the second column receives a bottom stream as a feed from the first column.
6. The process according to claim 5, wherein the first column provides a light naphtha as an overhead stream, and a medium naphtha as a side stream.
7. The process according to claim 5, wherein the second column provides an aromatic naphtha as an overhead stream and a heavy naphtha as a bottom stream.
8. The process according to claim 1, wherein the second column provides a bottom stream as a feed to the first column.
9. The process according to claim 8, wherein the first column provides a medium naphtha as an overhead stream, an aromatic naphtha as a side stream, and a heavy naphtha as a bottom stream.
10. The process according to claim 8, wherein the second column provides a light naphtha as an overhead stream.
11. A process for separating a plurality of naphtha components, comprising:
A) feeding a column, comprising a dividing imperforate wall with one surface facing a feed and another surface facing a plurality of side streams wherein the wall extends a significant portion of the column height to divide the portion into at least two substantially vertical, parallel contacting sections; and
B) providing an overhead stream comprising a light naphtha, a first side stream comprising a medium naphtha, a second side stream comprising an aromatic naphtha, and a bottom stream comprising a heavy naphtha from said column.
12. The process according to claim 11, further comprising passing the overhead stream through a receiver before at least a portion is returned to the column as reflux and passing at least a portion of the bottom stream through a heater and returning it to the column.
13. The process according to claim 11, providing the feed at an elevation between the first side stream and the second side stream.
14. A process for separating a plurality of naphtha components, comprising:
A) feeding naphtha components to a first column, comprising a dividing imperforate wall with one surface facing a feed and another surface facing a side stream wherein the wall extends a significant portion of the column height to divide the portion into at least two substantially vertical, parallel contacting sections;
B) receiving a feed in a second column from the first column or providing a feed to a first column from a second column communicating with the first column wherein the second column is non-divided; and
C) providing at least four product streams.
15. The process according to claim 14, wherein the second column receives a side stream as a feed from the first column.
16. The process according to claim 15, wherein the first column provides a light naphtha as an overhead stream and a heavy naphtha as a bottom stream, and the second column provides a medium naphtha as an overhead stream and an aromatic naphtha as a bottom stream.
17. The process according to claim 14, wherein the second column receives a bottom stream as a feed from the first column.
18. The process according to claim 17, wherein the first column provides a light naphtha as an overhead stream, and a medium naphtha as a side stream, and the second column provides an aromatic naphtha as an overhead stream and a heavy naphtha as a bottom stream.
19. The process according to claim 14, wherein the second column provides a bottom stream as a feed to the first column.
20. The process according to claim 19, wherein the first column provides a medium naphtha as an overhead stream, an aromatic naphtha as a side stream, and a heavy naphtha as a bottom stream, and the second column provides a light naphtha as an overhead stream.