cdma2000 reverse link

IS-95-C Reverse LinkQUALCOMM Proprietary
REVERSE CDMA CHANNEL for Spreading Rates 1 and 3 (SR1 and SR3)
Access Channel
Enhanced Access Channel Operation
Reverse Power Control Subchannel
0 or 1 Reverse Fundamental Channel
0 to 2 Reverse Supplemental Channels
Reverse Traffic Channel Operation (RC 3 to 6)
Section 3:cdma2000 Reverse Link
R-SCH1 Reverse Supplemental Channel - 1 R-SCH2 Reverse Supplemental Channel - 2
R-PICH Reverse Pilot Channel R-FCH Reverse Fundamental Channel R-DCCH Reverse Dedicated Control Channel R-SCHT (Reverse Supplemental Channel Type)
R-DPHCH (Reverse Dedicated Physical Channel)
R-FCH* Reverse Fundamental Channel
F-SCCHT* ( Reverse Supplemental Channel Type)
* Maximum data rate for a single Supplemental Channel
** Radio Configuration 1 and 2 correspond to TIA/EIA-95-B RS 1 and RS 2
QUALCOMM Proprietary
Separate channels used for different QoS and physical layer characteristics
Transmission is continuous to avoid EMI issues
Code Multiplexed channels are orthogonalized by Walsh functions and I/Q split so that performance is equivalent to BPSK
Hybrid Combination of QPSK and Pi/2 BPSK
By restricting alternate phase changes of the complex scrambling sequence, power peaking is reduced (1 dB improvement) and side lobes are narrowed
Code multiplexed channels
Forward Error Correction
Convolutional codes (K=9) are used for voice and data
Parallel Turbo Codes (K=4) are used for high data rates on Supplemental
Fast Reverse Power Control
800 Hz update rate
Frame Lengths
5 ms, 10 ms, 20 ms, 40 ms and 80 ms frames
Anatel Presentation
Reverse Pilot Channel
The Reverse Pilot Channel is transmitted when Enhanced Access Channel, Common Control Channel, or the Reverse Traffic Channel with Radio Configuration 3 through 6 is enabled.
The Reverse Pilot Channel is also transmitted during Enhanced Access Channel preamble, Common Control Channel preamble, or the Reverse Traffic Channel preamble.
Pilot reference level varies across Radio Configurations.
Enhanced Access Channel
The R-EACH is used by the MS to initiate communication with the BS or respond to a MS directed message
The R-EACH can be used in three possible modes: Basic Access Mode, Power Control Access Mode, and Reservation Access Mode.
Basic Access Mode: preamble + data (No header)
Power Control Access Mode: preamble + header + data
Reservation Access Mode: preamble + header (data is sent on the Reverse Common Control Channel)
Frame length
5 ms, 10 ms, or 20 ms for data
1.25 ms
5 ms

Preamble Transmission (See Figure 2.1.3.5-1)
Fractional Preamble 1
Reverse Common Control Channel
The R-CCCH is used for the transmission of user and signaling information to the BS when Reverse Traffic Channels are not in use.
Up to 32 R-CCCH per supported F-CCCH and up to 32 R-CCCH per supported F-CACH
Structure similar to Reverse Dedicated Channel
No FL power control puncturing on pilot
Access probes are staggered in time (5 ms)
Reduces delay
Frame length: 20 ms, 10 ms, or 5 ms
1.25 ms
Reverse Pilot Channel Transmission

Preamble Transmission (See Figure 2.1.3.5-1)
Fractional Preamble 1
Eb/No (dB) Reqd. for 1% FER
R-CCCH 9.6kbps 20ms
R-CCCH 9.6kbps 20ms
R-CCCH 9.6kbps 5ms
R-CCCH 9.6 kbps 5ms
R-CCCH 19.2kbps 20ms
R-CCCH 38.4 kbps 10ms
R-CCCH 38.4kbps 5ms
R-CCCH 38.4kbps 5ms
P/T Ratio
-9
1.314
-23.2709694203
2.36
-22.2249694203
3.16
-21.4249694203
3.12
-21.4649694203
-4
2.158
-24.3674046311
3.39
-23.1354046311
6.66
-19.8654046311
5.27
-21.2554046311
-5
1.448
-19.8153104807
2.71
-18.5533104807
5.05
-16.2133104807
3.93
-17.3333104807
P/T Ratio
-12
9.6
20
30
-22
-13
9.6
5
54
-22
-14
19.2
20
50
-22
-15
19.2
10
64
-22
38.4
20
72
-22
38.4
10
80
-22
38.4
5
88
-22
R-CCCH 9.6kbps 20ms
R-CCCH 9.6kbps 20ms
R-CCCH 9.6kbps 5ms
R-CCCH 9.6 kbps 5ms
R-CCCH 38.4kbps 5ms
R-CCCH 38.4kbps 5ms
P/T Ratio
-9
1.314
-23.2709694203
2.36
-22.2249694203
3.16
-21.4249694203
3.12
-21.4649694203
-4
2.158
-24.3674046311
3.39
-23.1354046311
6.66
-19.8654046311
5.27
-21.2554046311
-5
1.448
-19.8153104807
2.71
-18.5533104807
5.05
-16.2133104807
3.93
-17.3333104807
P/T Ratio
-12
9.6
20
30
-22
-13
9.6
5
54
-22
-14
19.2
20
50
-22
-15
19.2
10
64
-22
38.4
20
72
-22
38.4
10
80
-22
38.4
5
88
-22
R-CCCH 9.6kbps 20ms
R-CCCH 9.6kbps 20ms
R-CCCH 9.6kbps 5ms
R-CCCH 9.6 kbps 5ms
R-CCCH 38.4kbps 5ms
R-CCCH 38.4kbps 5ms
P/T Ratio
-9
1.314
-23.2709694203
2.36
-22.2249694203
3.16
-21.4249694203
3.12
-21.4649694203
-4
2.158
-24.3674046311
3.39
-23.1354046311
6.66
-19.8654046311
5.27
-21.2554046311
-5
1.448
-19.8153104807
2.71
-18.5533104807
5.05
-16.2133104807
3.93
-17.3333104807
P/T Ratio
-12
9.6
20
30
-22
-13
9.6
5
54
-22
-14
19.2
20
50
-22
-15
19.2
10
64
-22
38.4
20
72
-22
38.4
10
80
-22
38.4
5
88
-22
R-CCCH 9.6kbps 20ms
R-CCCH 9.6kbps 20ms
R-CCCH 9.6kbps 5ms
R-CCCH 9.6 kbps 5ms
R-CCCH 38.4kbps 5ms
R-CCCH 38.4kbps 5ms
P/T Ratio
-9
1.314
-23.2709694203
2.36
-22.2249694203
3.16
-21.4249694203
3.12
-21.4649694203
-4
2.158
-24.3674046311
3.39
-23.1354046311
6.66
-19.8654046311
5.27
-21.2554046311
-5
1.448
-19.8153104807
2.71
-18.5533104807
5.05
-16.2133104807
3.93
-17.3333104807
P/T Ratio
-12
9.6
20
30
-22
-13
9.6
5
54
-22
-14
19.2
20
50
-22
-15
19.2
10
64
-22
38.4
20
72
-22
38.4
10
80
-22
38.4
5
88
-22
Reverse Dedicated Control Channel (R-DCCH)
The R-DCCH is used for transmission of user and signaling information to the base station during a call
The R-DCCH frame structure is shown in the following table:
Frame Length (ms)
Transmission Rate (bps)
T - Encoder Tail Bits
F
T
R
R - Reserved Bit F - Frame Quality Indicator (CRC) T - Encoder Tail Bits
Notation
Reverse Dedicated Control Channel Bits
Data Rate Bits/Frame Bits (kbps) Symbols Rate (ksps) 24 Bits/5 ms 16 9.6 384 76.8 172 Bits/20 ms 12 9.6 1,536 76.8
Modulation Symbol
Symbol Repetition (2 Factor)
Add 8 Encoder Tail Bits
Reverse Dedicated Control Channel Bits
Data Rate Bits/Frame Bits Bits (kbps) Deletion Symbols Rate (ksps) 24 Bits/5 ms 0 16 9.6 None 384 76.8 267 Bits/20 ms 1 12 14.4 8 of 24 1,536 76.8
Modulation Symbol
Symbol Repetition (2 Factor)
384 N Chips
Applies only to Radio Configuration 3 to 6
Turbo coding may be used for Radio Configuration 3 to 6
Supports 20 ms, 40 ms, and 80 ms frames
Reverse Supplemental Channel physical layer frame structure
There are always 8 reserved/tail bits
CRC length is 16 bits for 360 or more bits/frame
Reserved bit is included if rate is an IS-95 rate
Information Bits
F
R/T
R
R - Reserved Bit F - Frame Quality Indicator (CRC) R/T - Reserved/Encoder Tail Bits
Notation
Channel Bits
Data Rate Bits/Frame Bits (kbps) R Factor Deletion Symbols Rate (ksps) 24 Bits/5 ms 16 9.6 1/4 2 None 384 76.8 16 Bits/20 ms 6 1.5 1/4 16 1 of 5 1,536 76.8 40 Bits/20n ms 6 2.7/n 1/4 8 1 of 9 1,536 76.8/n 80 Bits/20n ms 8 4.8/n 1/4 4 None 1,536 76.8/n 172 Bits/20n ms 12 9.6/n 1/4 2 None 1,536 76.8/n 360 Bits/20n ms 16 19.2/n 1/4 1 None 1,536 76.8/n 744 Bits/20n ms 16 38.4/n 1/4 1 None 3,072 153.6/n 1,512 Bits/20n ms 16 76.8/n 1/4 1 None 6,144 307.2/n 3,048 Bits/20n ms 16 153.6/n 1/4 1 None 12,288 614.4/n 6,120 Bits/20n ms 16 307.2/n 1/2 1 None 12,288 614.4/n
Notes: 1. n is the length of the frame in multiples of 20 ms. For 40 channel bits per frame, n = 1 or 2. For more than 40 channel bits per frame, n = 1, 2, or 4. 2. The 5 ms frame is only used for the Reverse Fundamental Channel, and the Reverse Fundamental Channel only uses from 16 to 172 channel bits per frame with n = 1. 3. Turbo coding may be used for the Reverse Supplemental Channels with 360 or more channel bits per frame; otherwise, K = 9 convolutional coding is used. 4. With convolutional coding, the Reserved/Encoder Tail bits provide an encoder tail. With turbo coding, the first two of these bits are reserved bits that are encoded and the last six bits are replaced by an internally generated tail.
Modulation Symbol
Reverse Link I and Q Mapping for RC 3 and 4
Baseband Filter
Relative Gain
Relative Gain
Relative Gain
Walsh Cover (+ + + + + + + + )
Walsh Cover (+ + + + + + + + )
Walsh Cover (+ ) or (+ + ) for Reverse Supplemental Channel 1 (+ + + + ) for Reverse Common Control Channel and Enhanced Access Channel
B
C
C
Reverse Supplemental Channel 1, Reverse Common Control Channel, or Enhanced Access Channel
Reverse Fundamental Channel
Q-Channel PN Sequence
I-Channel PN Sequence
Long Code Mask
Complex Multiplier
Notes : 1. Binary signals are represented with 1 values with the mapping +1 for 0 and 1 for 1. Unused channels and gated-off symbols are represented with zero values. 2. When the Reverse Common Control Channel or Enhanced Access Channel is used, the only additional channel is the Reverse Pilot Channel. 3. All of the pre-baseband-filter operations occur at the chip rate of 3.6864 Mcps.
Baseband Filter
Signal Constellation Before Spreading
RC 3 and Above (R-FCH, and R-SCH 1)
I
Q
Reduces Peak-to-average ratio
Baseband Filter
Relative Gain
Relative Gain
Relative Gain
Walsh Cover (+ + + + + + + + )
Walsh Cover (+ + + + + + + + )
Walsh Cover (+ ) or (+ + ) for Reverse Supplemental Channel 1 (+ + + + ) for Reverse Common Control Channel and Enhanced Access Channel
B
C
C
Reverse Supplemental Channel 1, Reverse Common Control Channel, or Enhanced Access Channel
Reverse Fundamental Channel
Q-Channel PN Sequence
I-Channel PN Sequence
Long Code Mask
Complex Multiplier
Notes : 1. Binary signals are represented with 1 values with the mapping +1 for 0 and 1 for 1. Unused channels and gated-off symbols are represented with zero values. 2. When the Reverse Common Control Channel or Enhanced Access Channel is used, the only additional channel is the Reverse Pilot Channel. 3. All of the pre-baseband-filter operations occur at the chip rate of 3.6864 Mcps.
Baseband Filter
Long Code Generator for SR 3
The I long code generator for SR 3 consists of three multiplexed components:
The first component is the I long code for SR 1
The second component is the modulo-2 addition of the I long code and the I long code delayed by 1/1.2288 s
The third component is the modulo-2 addition of the I long code and the I long code delayed by 2/1.2288 s
The chip rate of the long code is 3.6864 Mcps
1/1.2288 ms Delay
Channel Bits
Data Rate Bits/Frame Bits (kbps) R Factor Deletion Symbols Rate (ksps) 24 Bits/5 ms 16 9.6 1/4 2 None 384 76.8 16 Bits/20 ms 6 1.5 1/4 16 1 of 5 1,536 76.8 40 Bits/20n ms 6 2.7/n 1/4 8 1 of 9 1,536 76.8/n 80 Bits/20n ms 8 4.8/n 1/4 4 None 1,536 76.8/n 172 Bits/20n ms 12 9.6/n 1/4 2 None 1,536 76.8/n 360 Bits/20n ms 16 19.2/n 1/4 1 None 1,536 76.8/n 744 Bits/20n ms 16 38.4/n 1/4 1 None 3,072 153.6/n 1,512 Bits/20n ms 16 76.8/n 1/4 1 None 6,144 307.2/n 3,048 Bits/20n ms 16 153.6/n 1/4 1 None 12,288 614.4/n 6,120 Bits/20n ms 16 307.2/n 1/2 1 None 12,288 614.4/n
Modulation Symbol
1/4
1/4
1/4
4
8
16
Modulation Symbol Rate
76,800 (N ( 2) 38,400 ( N (N = 4 or 8) 614,400 (N 16)
76,800
76,800
76,800
sps
Walsh Length
For Reverse Fundamental Channel: 16 For Reverse Supplemental Channel: 8, 4, or 2 (N ( 4) 4 or 2 (N = 8) 2 (N 16)
16 (Reverse Fundamental Channel) 8, 4, or 2 (Reverse Supplemental Channel)
PN chips
Number of Walsh Function Repetitions per Modulation Symbol
For Reverse Fundamental Channel: 1 For Reverse Supplemental Channel: 2, 4, or 8 (N ( 2) 1, 2, or 4 (N = 4) 1 or 2 (N = 8) 1 (N 16)
Walsh functions/ modulation symbol
PN chips/bit
Note: N = 1, 2, 4, 8, 16, or 32, which yields data rates of 9600, 19200, 38400, 76800, 153600, or 307200 bps, respectively.
Channel Bits
Data Rate Bits/Frame Bits Bits (kbps) R Factor Deletion Symbols Rate (ksps) 24 Bits/5 ms 0 16 9.6 1/4 2 None 384 76.8 21 Bits/20 ms 1 6 1.8 1/4 16 8 of 24 1,536 76.8 55 Bits/20n ms 1 8 3.6/n 1/4 8 8 of 24 1,536 76.8/n 125 Bits/20n ms 1 10 7.2/n 1/4 4 8 of 24 1,536 76.8/n 267 Bits/20n ms 1 12 14.4/n 1/4 2 8 of 24 1,536 76.8/n 552 Bits/20n ms 0 16 28.8/n 1/4 1 None 2,304 115.2/n 1,128 Bits/20n ms 0 16 57.6/n 1/4 1 None 4,608 230.4/n 2,280 Bits/20n ms 0 16 115.2/n 1/4 1 None 9,216 460.8/n 4,584 Bits/20n ms 0 16 230.4/n 1/4 1 None 18,432 921.6/n 9,192 Bits/20n ms 0 16 460.8/n 1/4 1 None 36,864 1,843.2/n 20,712 Bits/20n ms 0 16 1,036.8/n 1/2 1 2 of 18 36,864 1,843.2/n
Modulation Symbol
1/4
1/4
1/4
4
8
16
16/24 (N = 1) 1 (2 ( N ( 32) 16/18 (N = 72)
16/24
16/24
16/24
Modulation Symbol Rate
76,800 (N = 1) 57,600 ( N (2 ( N ( 16) 1,843,200 (N 32)
76,800
76,800
76,800
sps
Walsh Length
For Reverse Fundamental Channel: 16 For Reverse Supplemental Channel: 8, 4, or 2 (N ( 8) 4 or 2 (N = 16) 2 (N 32)
PN chips
Number of Walsh Function Repetitions per Modulation Symbol
For Reverse Fundamental Channel: 3 For Reverse Supplemental Channel: 6, 12, or 24 (N = 1) 4, 8, or 16 (N = 2) 2, 4, or 8 (N = 4) 1, 2, or 4 (N = 8) 1 or 2 (N 16) 1 (N 32)
Walsh functions/ modulation symbol
PN chips/bit
Note: N = 1, 2, 4, 8, 16, 32, or 72, which yields data rates of 14400, 28800, 57600, 115200, 230400, 460800, or 1036800 bps, respectively.
Anatel Presentation
Code Channel Output Power
Pilot Channel Output Power
Reverse Pilot Gating
Used when the mobile station is in control hold to reduce battery consumption
Transmission (5 ms Frame)
Note that during a R-DCCH transmission the power control rate remains the same
Why? The base station does not know that the mobile station is transmitting on the R-DCCH
1/4
1
Transmission (20 ms Frame)

RL Open Loop Power Control
Reverse link power control is based on and referenced to the Pilot Channel
The initial transmission on the Reverse Pilot Channel when transmitting Reverse Traffic Channel with RC 3, 4, 5, or 6
Where interference correction = min(max(IC_THRESs - ECIO,0),7), and ECIO is the Ec/Io (dB) per carrier of the strongest active set pilot, measured within the previous 500 ms.
RL_GAIN_ADJ is sent in the Extended Channel Assignment Message (ECAM)
mean pilot channel output power (dBm) = - mean input power (dBm) + offset power (from the table shown next page) + interference correction + ACC_CORRECTIONS + RL_GAIN_ADJs,
Open Loop Power Offsets
-73
Enhanced Access Channel Reverse Common Control Channel Reverse Traffic Channel (RC = 3 or 4)
-81.5
3
-76.5
1
1
-76
-84.5
3
-79.5
RL Power Control
After the first valid power control bit is received, the mean pilot output power is defined by
mean pilot channel output power (dBm) = - mean input power (dBm) + offset power + interference correction + ACC_CORRECTIONS + RL_GAIN_ADJs + the sum of all closed loop power control corrections.
With RC1 and RC1
The base station estimates the E/N0 using 6 consecutive Walsh functions transmitted by the MS
The E/N0 estimate is then compared to a threshold to determine the sign of the power control bit
With RC3 and above
The base station filters the pilot channel to obtain an E/N0 estimate
The E/N0 estimate is then compared to a threshold to determine the sign of the power control bit
The RC3 type power control
Is a constant 800 bps
Is independent of data rate except when gating modes are used
RL Closed Loop Power Control
The MS adjusts its mean output power based on the valid power control bit received on the F-FCH or F-DCCH
0.25 dB, 0.5 dB, and 1.0 dB power control step sizes are supported
The MS is required to support a 1.0 dB stepsize
If the MS supports the R-SCH, then it must support a 0.5 dB stepsize
The MS is told the stepsize in the Power Control Message (PCNM)
RL Code Channel Output Power (RC 3, 4, 5, or 6)
Nominal_Attribute_Gain is a table stored in the MS
Attribute_Adjustment_Gain permits the table to be updated via the PCNM (Power Control Message)
Reverse_Channel_Adjustment permits the gain for a particular channel to be updated via the PCNM
Multiple_Channel_Adjustment handles variations due to various pilot setpoints
RLGAIN_TRAFFIC_PILOT is an overhead parameter used to adjust the traffic to pilot ratios
RLGAIN_SCH_PILOT is parameter in certain messages to adjust traffic to pilot ratios
Goal is to make the Fundamental Channel output power constant
Pilot Channel
Fundamental Channel
Supplemental Channel
5
Convolutional
58
0
1,800
20
Convolutional
-42
3
3,600
20
Convolutional
-13
3
7,200
20
Convolutional
15
3
14,400
20
Convolutional
44
3
5
Convolutional
54
3
19,200
20
Convolutional
50
1
38,400
20
Convolutional
60
11
76,800
20
Convolutional
72
21
153,600
20
Convolutional
84
36
307,200
20
Convolutional
96
54
614,400
20
Convolutional
Coupling 1X and 3X Together
It has been proposed to couple 1X reverse link with 3X forward link
MC forward link can be sent through different power amplifiers, which don’t have intermodulation between them
For many applications, higher reverse link data rates are not needed;
Provides much less out-of-band interference
-73
1
-81.5
0
3
-76.5
-76
1
-84.5
1
3
-79.5
1/4
20 ms
20 ms
20 ms
Information BitsFR/TR
R/T - Reserved/Encoder Tail Bits
0.00E+001.00E+062.00E+063.00E+064.00E+065.00E+066.00E+067.00E+068.00E+06
Freq. (Hz)
Pilot
Power
Control
£
2 (N
Supplemental Channel)
PN chips
Number of
Walsh Function
Repetitions per
1 or 2 (N
Walsh functions/
modulation symbol
Transmit Duty
PN chips/bit
Note: N = 1, 2, 4, 8, 16, 32, or 72, which yields data rates of 14400, 28800, 57600, 115200,
230400, 460800, or 1036800 bps, respectively.
Reverse Common
Control Channel
Reverse Pilot Channel Transmission
Reverse Common Control Channel
Full
Rate
Access
Channel
Reverse
Traffic
Channel
£
2 (N
PN chips
Number of
Walsh Function
Repetitions per
£
1 or 2 (N = 8)
1 (N
Walsh functions/
modulation symbol
Transmit Duty
PN chips/bit
Note: N = 1, 2, 4, 8, 16, or 32, which yields data rates of 9600, 19200, 38400, 76800,
153600, or 307200 bps, respectively.
Data Rate
Bits/FrameBits(kbps)RFactorDeletionSymbolsRate (ksps)
80 Bits/20n ms84.8/n1/44None1,53676.8/n
172 Bits/20n ms129.6/n1/42None1,53676.8/n
360 Bits/20n ms1619.2/n1/41None1,53676.8/n
744 Bits/20n ms1638.4/n1/41None3,072153.6/n
1,512 Bits/20n ms1676.8/n1/41None6,144307.2/n
3,048 Bits/20n ms16153.6/n1/41None12,288614.4/n
6,120 Bits/20n ms16307.2/n1/21None12,288614.4/n
Channel
Bits
C
Notes:
1.n is the length of the frame in multiples of 20 ms. For 40 channel bits per frame, n = 1 or 2. For more
than 40 channel bits per frame, n = 1, 2, or 4.
2.The 5 ms frame is only used for the Reverse Fundamental Channel, and the Reverse Fundamental Channel only uses from
16 to 172 channel bits per frame with n = 1.
3.Turbo coding may be used for the Reverse Supplemental Channels with 360 or more channel bits per frame; otherwise, K = 9
convolutional coding is used.
4.With convolutional coding, the Reserved/Encoder Tail bits provide an encoder tail. With turbo coding, the first two of these bits
are reserved bits that are encoded and the last six bits are replaced by an internally generated tail.
Modulation
Symbol
552 Bits/20n ms016 28.8/n1/41None2,304115.2/n
1,128 Bits/20n ms016 57.6/n1/41None4,608230.4/n
2,280 Bits/20n ms016 115.2/n1/41None9,216460.8/n
4,584 Bits/20n ms016 230.4/n1/41None18,432921.6/n
9,192 Bits/20n ms016 460.8/n1/41None36,8641,843.2/n
Channel
Bits
Convolutional
Add
Reserved
Bits
C
Notes:
Modulation
Symbol
80 Bits/20n ms8 4.8/n1/44None1,53676.8/n
172 Bits/20n ms12 9.6/n1/42None1,53676.8/n
360 Bits/20n ms16 19.2/n1/41None1,53676.8/n
744 Bits/20n ms16 38.4/n1/41None3,072153.6/n
1,512 Bits/20n ms16 76.8/n1/41None6,144307.2/n
3,048 Bits/20n ms16 153.6/n1/41None12,288614.4/n
6,120 Bits/20n ms16 307.2/n1/21None12,288614.4/n
Channel
Bits
C
Notes:
Modulation
Symbol
-100.0
-90.0
-80.0
-70.0
-60.0
-50.0
-40.0
-30.0
-20.0
-10.0
191750000019195000001921500000192350000019255000001927500000
Frame
Length
(ms)
Transmission
Rate
(bps)
Total
Reserved
Information
Frame
Quality
Indicator
Encoder
T - Encoder Tail Bits
Convolutional
Encoder
with the mapping +1 for ‘0’ and –1 for ‘1’.
Unused channels and gated-off symbols are
represented with zero values.
3.All of the pre-baseband-filter operations occur
at the chip rate of 3.6864 Mcps.
Complex Multiplier
(+ + – – + + – – )
and Enhanced Access Channel
267 Bits/20 ms112 14.4 8 of 241,53676.8
Reverse
Dedicated
Control
Channel
Bits
Convolutional
Encoder
with the mapping +1 for ‘0’ and –1 for ‘1’.
Unused channels and gated-off symbols are
represented with zero values.
3.All of the pre-baseband-filter operations occur
at the chip rate of 3.6864 Mcps.
Complex Multiplier
(+ + – – + + – – )
and Enhanced Access Channel
5 km/h
30 km/h
120 km/h
(dBm) =
+ 0.125
+ Reverse_Channel_Adjustment_Gain[Channel]
- Multiple_Channel_Adjustment_Gain[Channel]
5 km/h
30 km/h
120 km/h
5 km/h
30 km/h
120 km/h
5 km/h
30 km/h
120 km/h
F-SCCHT*
( Reverse
Supplemental
Channel
Type)
(dBm) =
.
(dBm) =
+ interference correction
cdma2000 1X MC
1.25 MHz

cdma2000 reverse link

Documents