CDMA 2000 reverse channel

The reverse link for CDMA 2000 has properties similar to the forward link of a signal. 


And also have 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 minimum configuration consists of a reverse pilot channel to enable the base station (BS) to perform synchronous detection and reverse fundamental channel for voice.
The different reverse channel is:
  1. Reverse supplemental channel (R-SCH)
  2. Reverse pilot channel (R-PICH)
  3. The reverse dedicated control channel (R-DCCH)
  4. Reverse enhanced access channel (R-EACH)
  5. The reverse common control channel (R-CCCH)
  6. Reverse fundamental channel (R-FCH)
  7. Reverse supplemental code channel (R-SCCH)
1. Reverse supplemental channel (R-SCH)
When the data rate is greater than 9.6 kbps, an R-SCH is needed. R-SCH channel is assigned for power control. A total of one or two R-SCH can be assigned per mobile unit.

2. Reverse pilot channel (R-PICH)
It provides pilot and power control information. It enables the mobile unit to transmit a lower power level and allow to inform the base station of the forward power levels being received, enabling the base station to reduce power.

3. Reverse enhanced access channel (R-EACH)
R-EACH is used to initiate communication with the base station. It is used by a mobile station, This channel also reduces the access channel power.

4. The reverse common control channel (R-CCCH)
This channel is used by the mobile unit to send their data information after they have granted access.

5. The reverse dedicated control channel (R-DCCH)
This channel replaces the dim and burst and the blank and burst. It is used for messaging and control for data calls.

6. Reverse fundamental channel (R-FCH)
This channel is used for voice and data payload. R-FCH is allowed shorter frame, this shorter frame can be used lower latency.

7. Reverse supplemental code channel (R-SCCH)
This channel is the same as F-SCCH and same it can be used with radio configuration. 

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