CDMA 2000 forward channel

CDMA 2000 user is assigned a forward channel that consists of the following combination :
  1. Forward fundamental channel  (F-FCH)
  2. 0-7: Forward supplemental code channel (F-SCHs) for both RC1 and RC2
  3. 0-2: Forward supplemental code channel (F-SCHs) for both RC3 and RC
The different forward/downlink physical channel are : 
  1. Forward pilot channel (F-PICH)
  2. Forward auxiliary pilot channel (F-APICH)
  3. Forward transmit diversity pilot channel (F-TDPICH)
  4. Forward sync channel (F-SYNC)
  5. The forward paging channel (F-PCH)
  6. Forward broadcast channel (F-BCH)
  7. The forward quick paging channel (F-QPCH)
  8. The forward common power control channel (F-CPCCH)
  9. Forward supplemental channel (F-SCH)
  10. Forward common assignment channel (F-CACH)
  11. The forward dedicated control channel (F-DCCH)
  12. The forward data traffic channel 
1. Forward pilot channel (F-PICH)
This channel is used to get multipath fading and channel conditions. This channel is shared by mobile nodes to obtain the above mentions information.

2. Forward auxiliary pilot channel (F-APICH)
Every channel is allocated a unique Walsh code under the code-multiplexed method in a downlink.

3. Forward transmit diversity pilot channel (F-TDPICH)
When increased RF capacity this channel is used. In these channels are intended for synchronization by the mobile with a specific cell.

4. Forward sync channel (F-SYNC)
For providing initial synchronization related data to the mobile station this channel is used. 

These are two types of forwarding sync channel that are used :
  • Shared sync channel
  • Wide-band sync channel
5. The forward paging channel (F-PCH)
The base station uses this channel in order to transmit the mobile station specific message and the overhead message. 

These are two types of forwarding paging channel are used :
  • Shared paging channel
  • Wide-band paging channel
6.  Forward broadcast channel (F-BCH)
It is intended to transmit control information to the respective mobile stations effectively that have not been allocated a traffic channel.

7. The forward quick paging channel (F-QPCH)
This quick paging channel is used by the paging channel for providing control information to the mobile stations.

8. The forward common power control channel (F-CPCCH)
The necessary power control information of uplink common control channel is conveyed by base stations using this channel.

9. Forward supplemental channel (F-SCH)
Up to two F-SCHs can be assigned to a single mobile unit for high-speed data ranging from 9.6 to 153.6 kbps in release 0.

10. Forward common assignment channel (F-CACH)
The quick assignment of a reverse common control channel is done by the base station using this channel.

11. Forward common assignment channel (F-CACH)
 It is used to send high layer message to the mobile units. This channel is used by the base station.

12. The forward dedicated control channel (F-DCCH)
  • It replaces the dim and burst and blank and burst
  • It is used for messaging and control for data calls
  • In addition to these channel forward data, a traffic channel is also used in forwarding channels in the CDMA 2000 standard

The minimum configuration consists of a reverse pilot channel to enable the base station (BS) to perform synchronous detection and reverse fundamental channel for voice.

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