cdma2000ReverseReferenceChannels

(To be removed) Define cdma2000 reverse reference channel

cdma2000ReverseReferenceChannels will be removed in a future release. (since R2026a)

Syntax

cfg = cdma2000ReverseReferenceChannels(wv)

cfg = cdma2000ReverseReferenceChannels(wv,numchips)

cfg = cdma2000ReverseReferenceChannels(traffic,numchips,R-SCH-SPEC)

Description

cfg = cdma2000ReverseReferenceChannels(wv) returns a structure, cfg, that defines the cdma2000^® reverse link parameters given the input waveform identifier, wv. Pass the structure to the cdma2000ReverseWaveformGenerator function to generate a reverse link reference channel waveform.

For all syntaxes, cdma2000ReverseReferenceChannels creates a configuration structure that is compliant with the physical layer specification for cdma2000 systems described in [1].

example

cfg = cdma2000ReverseReferenceChannels(wv,numchips) specifies the number of chips to generate.

cfg = cdma2000ReverseReferenceChannels(traffic,numchips,R-SCH-SPEC) returns cfg for the specified traffic channel, traffic, and the reverse supplemental channel (R-SCH) and frame length combination, R-SCH-SPEC.

Examples

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Generate Reverse Common Control Channel Waveform

Generate the structure corresponding to the reverse common control channel (R-CCCH) having a 19,200 bps data rate and 10 ms frames.

config = cdma2000ReverseReferenceChannels('R-CCCH-19200-10');

Verify that the R-CCCH substructure is configured for the correct data rate and frame duration.

config.RCCCH

ans = struct with fields:
          Enable: 'On'
           Power: 0
    LongCodeMask: 0
    EnableCoding: 'On'
      DataSource: {'PN9'  [1]}
        DataRate: 19200
     FrameLength: 10
       WalshCode: 1

Generate the reverse channel waveform using the corresponding waveform generator function, cdma2000ReverseWaveformGenerator.

wv = cdma2000ReverseWaveformGenerator(config);

Input Arguments

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`wv` — Waveform identification
character vector

Waveform identification of the reference channel, specified as a character vector. The input typically identifies the channel type, radio configuration, data rate, and frame length. To specify wv, connect the substrings with hyphens, for example, 'TRAFFIC-RC2-3600'.

Parameter Field	Values			Description
Parameter Field	Substring 1	Substring 2	Substring 3	Description
`wv`	`'R-PICH-ONLY'`			Generates a waveform containing a pilot channel only.
	`'R-CCCH'`	`9600`	`20`	Character vector representing the Reverse Common Control Channel (R-CCCH) data rate in bps and the frame length in ms. Specify `'R-CCCH-9600-20'` to create a structure variable, `wv`, with a 9600 bps R-CCCH data rate and a 20 ms frame length.
		`19200`	`10` \| `20`
		`38400`	`5` \| `10` \| `20`
	`'TRAFFIC'`	`RC1`	`1200` \| `2400` \| `4800` \| `9600`	Character vector representing the radio configuration and the Reverse Fundamental Channel (R-FCH) data rate in bps. Specify `'TRAFFIC-RC6-14400'`, corresponds to radio configuration 6 with a 14400 bps R-FCH data rate.
		`RC2` \| `RC4` \| `RC6`	`1800` \| `3600` \| `7200` \| `14400`
		`RC3` \| `RC5` \| `RC6`	`1500` \| `2700` \| `4800` \| `9600`
	`'R-EACH'`	`9600`	`20`	Reverse Enhanced Access Channel waveforms. Specify `'R-EACH-38400-5'` to create a structure corresponding to an R-EACH channel with a 38400 bps data rate and a 5 ms frame length.
		`19200`	`10` \| `20`
		`38400`	`5` \| `10` \| `20`
	`'R-PICH-R-FCH'`			Specify tests for the mobile transmitter in accordance with [2].
	`'ALL'`	`RC1` \| `RC2` \| `RC3` \| `RC4` \| `RC5` \| `RC6`	N/A	Returns all channels that are supported for the specified radio configuration. Specify `'ALL-RC4'` to create a structure containing all traffic channels for radio configuration 4.

Example: 'R-CCCH-9600-20' is a R-CCH channel having a 9600 bps data rate and a 20 ms frame length.

Example: 'R-EACH-38400-5' is a R-EACH channel having a 38,400 bps data rate and a 5 ms frame length.

Data Types: char

`numchips` — Number of chips
`1000` (default) | positive integer scalar

Number of chips, specified as a positive integer.

Example: 2048

Data Types: double

`traffic` — Traffic configuration
character vector

Traffic channel configuration, specified as a character vector. The table shows the valid configurations.

Radio Configuration	Traffic Channel Configuration
1	`'TRAFFIC-RC1-1200'`	`'TRAFFIC-RC1-2400'`	`'TRAFFIC-RC1-4800'`	`'TRAFFIC-RC1-9600'`
2	`'TRAFFIC-RC2-1800'`	`'TRAFFIC-RC2-3600'`	`'TRAFFIC-RC2-7200'`	`'TRAFFIC-RC2-14400'`
3	`'TRAFFIC-RC3-1500'`	`'TRAFFIC-RC3-2700'`	`'TRAFFIC-RC3-4800'`	`'TRAFFIC-RC3-9600'`
4	`'TRAFFIC-RC4-1800'`	`'TRAFFIC-RC4-3600'`	`'TRAFFIC-RC4-7200'`	`'TRAFFIC-RC4-14400'`
5	`'TRAFFIC-RC5-1500'`	`'TRAFFIC-RC5-2700'`	`'TRAFFIC-RC5-4800'`	`'TRAFFIC-RC5-9600'`
6	`'TRAFFIC-RC6-1800'`	`'TRAFFIC-RC6-3600'`	`'TRAFFIC-RC6-7200'`	`'TRAFFIC-RC6-14400'`

Example: 'TRAFFIC-RC4-1800' is a traffic channel using radio configuration 4 and having an R-FCH with an 1800 bps data rate.

Data Types: char

`R-SCH-SPEC` — Reverse Supplemental Channel data rate and frame length
character vector

Specify the R-SCH data rate and frame length as a character vector. If omitted, R-SCH-SPEC defaults to the lowest R-SCH data rate allowable for a 20 ms frame length given the radio configuration specified by traffic. The table summarizes the supported data rate and frame length combinations.

Radio Configuration	Frame Length
Radio Configuration	20 ms	40 ms	80 ms
3 \| 5	`'R-SCH-1500-20'` \| `'R-SCH-2700-20'` \| `'R-SCH-4800-20'` \| `'R-SCH-9600-20'` \| `'R-SCH-19200-20'` \| `'R-SCH-38400-20'` \| `'R-SCH-76800-20'` \| `'R-SCH-153600-20'` \| `'R-SCH-307200-20'`	`'R-SCH-1350-40'` \| `'R-SCH-2400-40'` \| `'R-SCH-4800-40'` \| `'R-SCH-9600-40'` \| `'R-SCH-19200-40'` \| `'R-SCH-38400-40'` \| `'R-SCH-76800-40'`\| `'R-SCH-153600-40'`	`'R-SCH-1350-80'` \| `'R-SCH-2400-80'` \| `'R-SCH-4800-80'` \| `'R-SCH-9600-80'` \| `'R-SCH-19200-80'` \| `'R-SCH-38400-80'` \| `'R-SCH-76800-80'`
5	`'R-SCH-614400-20'`	`'R-SCH-307200-40'`	`'R-SCH-153600-80'`
4 \| 6	`'R-SCH-1800-20'` \| `'R-SCH-3600-20'` \| `'R-SCH-7200-20'` \| `'R-SCH-14400-20'` \| `'R-SCH-28800-20'` \| `'R-SCH-57600-20'` \| `'R-SCH-115200-20'` \| `'R-SCH-230400-20'`	`'R-SCH-1800-40'` \| `'R-SCH-3600-40'` \| `'R-SCH-7200-40'` \| `'R-SCH-14400-40'` \| `'R-SCH-28800-40'` \| `'R-SCH-57600-40'` \| `'R-SCH-115200-40'`	`'R-SCH-1800-80'` \| `'R-SCH-3600-80'` \| `'R-SCH-7200-80'` \| `'R-SCH-14400-80'` \| `'R-SCH-28800-80'` \| `'R-SCH-57600-80'`
6	`'R-SCH-460800-20'` \| `'R-SCH-1036800-20'`	`'R-SCH-230400-40'` \| `'R-SCH-518400-40'`	`'R-SCH-115200-80'` \| `'R-SCH-259200-80'`

Additional data rate information for the cdma2000 reverse links is given in Tables 2.1.3.1.3-1 and 2.1.3.1.3-2 of [1].

Example: 'R-SCH-153600-20' is an R-SCH having a 153,600 bps data rate and a 20 ms frame length.

Data Types: char

Output Arguments

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`cfg` — Configuration of the parameters and channels used by the waveform generator
structure

Configuration of the parameters and channels used by the waveform generator. The configuration structure is defined in these tables.

Top-Level Parameters and Substructures

Parameter Field	Values	Description
`RadioConfiguration`	`'RC1'` \| `'RC2'` \| `'RC3'` \| `'RC4'` \| `'RC5'` \| `'RC6'`	Radio configuration of the reverse channel. The spreading rate of the waveform is derived from the radio configuration. Spreading rate 1, SR1, corresponds to a 1.2288 Mcps carrier and is associated with RC1 through RC4. Spreading rate 3, `SR3`, corresponds to a 3.6864 Mcps carrier and is associated with RC5 and RC6.
`PowerNormalization`	`'Off'` \| `'NormalizeTo0dB'`	Power normalization of the waveform
`NumChips`	Positive scalar integer	Number of chips in the waveform
`OversamplingRatio`	Positive scalar integer	Oversampling ratio at output
`FilterType`	`'cdma2000Long'` \| `'cdma2000Short'` \| `'Off'` \| `'Custom'`	Type of output filtering
`CustomFilterCoefficients`	Real vector	Custom filter coefficients used only when the `FilterType` field is set to `'Custom'`
`InvertQ`	`'Off'` \| `'On'`	Negate the quadrature output
`EnableModulation`	`'Off'` \| `'On'`	Enable carrier modulation
`ModulationFrequency`	Nonnegative scalar integer	Carrier modulation frequency (applies when `EnableModulation` is `'On'`)
`RPICH`	Structure	See `RPICH` Substructure. Optional.
`RACH`	Structure	See `RACH` Substructure. Optional.
`REACH`	Structure	See `REACH` Substructure. Optional.
`RCCCH`	Structure	See `RCCCH` Substructure. Optional.
`RDCCH`	Structure	See `RDCCH` Substructure. Optional.
`RFCH`	Structure	See `RFCH` Substructure. Optional.
`RSCCH`	Structure	See `RSCCH` Substructure. Optional.
`RSCH1`	Structure	See `RSCH1` Substructure. Optional.
`RSCH2`	Structure	See `RSCH2` Substructure. Optional.

RPICH Substructure

Include the RPICH substructure in the cfg structure to configure the Reverse Pilot Channel (R-PICH). The RPICH substructure contains the following fields.

Parameter Field	Values	Description
`Enable`	`'On'` \| `'Off'`	Enable or disable the channel
`Power`	Real scalar	Relative channel power (dB)
`LongCodeMask`	42-bit binary number	Long code identifier
`PowerControlEnable`	`'On'` \| `'Off'`	Enable or disable power control subchannel
`PowerControlPower`	Real scalar	Power control subchannel power (relative to R-PICH)
`PowerControlDataSource`	Cell array, `{'PN Type', RN Seed}` or binary vector. Standard PN sequence options are `'PN9'`, `'PN15'`, `'PN23'`, `'PN9-ITU'`, and `'PN11'`.	Power control subchannel data source

RACH Substructure

Include the RACH substructure in the cfg structure to configure the Reverse Access Channel (R-ACH). The RACH substructure contains the following fields.

Parameter Field	Values	Description
`Enable`	`'On'` \| `'Off'`	Enable or disable the channel
`Power`	Real scalar	Relative channel power (dB)
`LongCodeMask`	42-bit binary number	Long code identifier
`EnableCoding`	`'On'` \| `'Off'`	Enable or disable channel coding
`DataSource`	Cell array: `{'PN Type', RN Seed}` or a binary vector. Standard PN types are `'PN9'`, `'PN15'`, `'PN23'`, `'PN9-ITU'`, and `'PN11'`.	Data source. Specify a standard PN sequence with a random number seed or a binary vector.

REACH Substructure

Include the REACH substructure in the cfg structure to configure the Reverse Enhanced Access Channel (R-EACH). The REACH substructure contains the following fields.

Parameter Field	Values	Description
`Enable`	`'On'` \| `'Off'`	Enable or disable the channel
`Power`	Real scalar	Relative channel power (dB)
`DataRate`	`9600` \| `19200` \| `38400`	Data rate (bps)
`FrameLength`	`5` \| `10` \| `20`	Frame length (ms)
`WalshCode`	Nonnegative integer scalar such that 0 ≤ `WalshCode` ≤ 7	Walsh code number
`LongCodeMask`	42-bit binary number	Long code identifier
`EnableCoding`	`'On'` \| `'Off'`	Enable or disable channel coding
`DataSource`	Cell array: `{'PN Type', RN Seed}` or a binary vector. Standard PN types are `'PN9'`, `'PN15'`, `'PN23'`, `'PN9-ITU'`, and `'PN11'`.	Data source. Specify a standard PN sequence with a random number seed or a binary vector.

RCCCH Substructure

Include the RCCCH substructure in the cfg structure to configure the Reverse Common Control Channel (R-CCCH). The RCCCH substructure contains the following fields.

Parameter Field	Values	Description
`Enable`	`'On'` \| `'Off'`	Enable or disable the channel
`Power`	Real scalar	Relative channel power (dB)
`DataRate`	`9600` \| `19200` \| `38400`	Data rate (bps)
`FrameLength`	`5` \| `10` \| `20`	Frame length (ms)
`CodingType`	`'conv'` \| `'turbo'`	Type of error control coding
`WalshCode`	Nonnegative integer scalar such that 0 ≤ `WalshCode` ≤ 7	Walsh code number
`LongCodeMask`	42-bit binary number	Long code identifier
`EnableCoding`	`'On'` \| `'Off'`	Enable or disable channel coding
`DataSource`	Cell array: `{'PN Type', RN Seed}` or binary vector. Standard PN sequence options are `'PN9'`, `'PN15'`, `'PN23'`, `'PN9-ITU'`, and `'PN11'`.	Data source. Specify a standard PN sequence with a random number seed or a custom vector.

RDCCH Substructure

Include the RDCCH substructure in the cfg structure to configure the Reverse Dedicated Control Channel (R-DCCH). The RDCCH substructure contains the following fields.

Parameter Field	Values	Description
`Enable`	`'On'` \| `'Off'`	Enable or disable the channel
`Power`	Real scalar	Relative channel power (dB)
`FrameLength`	`5` \| `20`	Frame length (ms)
`WalshCode`	Nonnegative integer scalar such that 0 ≤ `WalshCode` ≤ 15	Walsh code number
`LongCodeMask`	42-bit binary number	Long code identifier
`EnableCoding`	`'On'` \| `'Off'`	Enable or disable channel coding
`DataSource`	Cell array, `{'PN Type', RN Seed}` or binary vector. Standard PN sequence options are `'PN9'`, `'PN15'`, `'PN23'`, `'PN9-ITU'`, and `'PN11'`.	Data source. Specify a standard PN sequence with a random number seed or a custom vector.

RFCH Substructure

Include the RFCH substructure in the cfg structure to configure the Reverse Fundamental Traffic Channel (R-FCH). The RFCH substructure contains the following fields.

Parameter Field	Values	Description
`Enable`	`'On'` \| `'Off'`	Enable or disable the channel
`Power`	Real scalar	Relative channel power (dB)
`DataRate`	`1200` \| `1500` \| `1800` \| `2400` \| `2700` \| `3600` \| `4800` \| `7200` \| `9600` \| `14400`	Data rate (bps)
`FrameLength`	`5` \| `10` \| `20`	Frame length (ms)
`WalshCode`	Nonnegative integer scalar such that 0 ≤ `WalshCode` ≤ 15	Walsh code number
`LongCodeMask`	42-bit binary number	Long code identifier
`EnableCoding`	`'On'` \| `'Off'`	Enable or disable channel coding
`DataSource`	Cell array, `{'PN Type', RN Seed}` or binary vector. Standard PN sequence options are `'PN9'`, `'PN15'`, `'PN23'`, `'PN9-ITU'`, and `'PN11'`.	Data source. Specify a standard PN sequence with a random number seed or a custom vector.

RSCCH Substructure

Include the RSCCH substructure in the cfg structure to configure the Reverse Supplemental Code Channel (R-SCCH). The RSCCH substructure contains the following fields.

Parameter Field	Values	Description
`Enable`	`'On'` \| `'Off'`	Enable or disable the channel
`Power`	Real scalar	Relative channel power (dB)
`LongCodeMask`	42-bit binary number	Long code identifier
`EnableCoding`	`'On'` \| `'Off'`	Enable or disable channel coding
`DataSource`	Cell array, `{'PN Type', RN Seed}` or binary vector. Standard PN sequence options are `'PN9'`, `'PN15'`, `'PN23'`, `'PN9-ITU'`, and `'PN11'`.	Data source. Specify a standard PN sequence with a random number seed or a custom vector.

RSCH1 Substructure

Include the RSCH1 substructure in the cfg structure to configure the Reverse Supplemental Channel 1 (R-SCH 1). The RSCH1 substructure contains the following fields.

Parameter Field	Values	Description
`Enable`	`'On'` \| `'Off'`	Enable or disable the channel
`Power`	Real scalar	Relative channel power (dB)
`DataRate`	`1200` \| `1350` \| `1500` \| `1800` \| `2400` \| `2700` \| `3600` \| `4800` \| `7200` \| `9600` \| `14400` \| `19200` \| `28800` \| `38400` \| `57600` \| `76800` \| `115200` \| `153600` \| `230400` \| `259200` \| `307200` \| `460800` \| `518400` \| `614400` \| `1036800`	Data rate (bps)
`FrameLength`	`20` \| `40` \| `80`	Frame length (ms)
`WalshLength`	`2` \| `4`	Walsh code length
`WalshCode`	Nonnegative integer scalar such that 0 ≤ `WalshCode` ≤ `WalshLength` – 1	Walsh code number
`LongCodeMask`	42-bit binary number	Long code identifier
`EnableCoding`	`'On'` \| `'Off'`	Enable or disable channel coding
`DataSource`	Cell array, `{'PN Type', RN Seed}` or binary vector. Standard PN sequence options are `'PN9'`, `'PN15'`, `'PN23'`, `'PN9-ITU'`, and `'PN11'`.	Data source. Specify a standard PN sequence with a random number seed or a custom vector.

RSCH2 Substructure

Include the RSCH2 substructure in the cfg structure to configure the Reverse Supplemental Channel 2 (R-SCH 2). The RSCH2 substructure contains the following fields.

Parameter Field	Values	Description
`Enable`	`'On'` \| `'Off'`	Enable or disable the channel
`Power`	Real scalar	Relative channel power (dB)
`DataRate`	`1200` \| `1350` \| `1500` \| `1800` \| `2400` \| `2700` \| `3600` \| `4800` \| `7200` \| `9600` \| `14400` \| `19200` \| `28800` \| `38400` \| `57600` \| `76800` \| `115200` \| `153600` \| `230400` \| `259200` \| `307200` \| `460800` \| `518400` \| `614400` \| `1036800`	Data rate (bps)
`FrameLength`	`20` \| `40` \| `80`	Frame length (ms)
`WalshLength`	`4` \| `8`	Walsh code length
`WalshCode`	Nonnegative integer scalar such that 0 ≤ `WalshCode` ≤ `WalshLength` – 1	Walsh code number
`LongCodeMask`	42-bit binary number	Long code identifier
`EnableCoding`	`'On'` \| `'Off'`	Enable or disable channel coding
`DataSource`	Cell array, `{'PN Type', RN Seed}` or binary vector. Standard PN sequence options are `'PN9'`, `'PN15'`, `'PN23'`, `'PN9-ITU'`, and `'PN11'`.	Data source. Specify a standard PN sequence with a random number seed or a custom vector.

Data Types: struct

References

[1] 3GPP2 C.S0002–F v2.0. "Physical Layer Standard for cdma2000 Spread Spectrum Systems." 3rd Generation Partnership Project 2.

[2] 3GPP2 C.S0011–E v2.0. "Recommended Minimum Performance Standards for cdma2000 Spread Spectrum Mobile Stations." 3rd Generation Partnership Project 2.

Version History

Introduced in R2015b

collapse all

R2026a: To be removed

cdma2000ReverseReferenceChannels will be removed in a future release.

Radio Configuration	Frame Length
Radio Configuration	20 ms	40 ms	80 ms
3 \| 5	`'R-SCH-1500-20'` \| `'R-SCH-2700-20'` \| `'R-SCH-4800-20'` \| `'R-SCH-9600-20'` \| `'R-SCH-19200-20'` \| `'R-SCH-38400-20'` \| `'R-SCH-76800-20'` \| `'R-SCH-153600-20'` \| `'R-SCH-307200-20'`	`'R-SCH-1350-40'` \| `'R-SCH-2400-40'` \| `'R-SCH-4800-40'` \| `'R-SCH-9600-40'` \| `'R-SCH-19200-40'` \| `'R-SCH-38400-40'` \| `'R-SCH-76800-40'`\| `'R-SCH-153600-40'`	`'R-SCH-1350-80'` \| `'R-SCH-2400-80'` \| `'R-SCH-4800-80'` \| `'R-SCH-9600-80'` \| `'R-SCH-19200-80'` \| `'R-SCH-38400-80'` \| `'R-SCH-76800-80'`
5	`'R-SCH-614400-20'`	`'R-SCH-307200-40'`	`'R-SCH-153600-80'`
4 \| 6	`'R-SCH-1800-20'` \| `'R-SCH-3600-20'` \| `'R-SCH-7200-20'` \| `'R-SCH-14400-20'` \| `'R-SCH-28800-20'` \| `'R-SCH-57600-20'` \| `'R-SCH-115200-20'` \| `'R-SCH-230400-20'`	`'R-SCH-1800-40'` \| `'R-SCH-3600-40'` \| `'R-SCH-7200-40'` \| `'R-SCH-14400-40'` \| `'R-SCH-28800-40'` \| `'R-SCH-57600-40'` \| `'R-SCH-115200-40'`	`'R-SCH-1800-80'` \| `'R-SCH-3600-80'` \| `'R-SCH-7200-80'` \| `'R-SCH-14400-80'` \| `'R-SCH-28800-80'` \| `'R-SCH-57600-80'`
6	`'R-SCH-460800-20'` \| `'R-SCH-1036800-20'`	`'R-SCH-230400-40'` \| `'R-SCH-518400-40'`	`'R-SCH-115200-80'` \| `'R-SCH-259200-80'`

cdma2000ReverseReferenceChannels

Syntax

Description

Examples

Generate Reverse Common Control Channel Waveform

Input Arguments

wv — Waveform identification character vector

numchips — Number of chips 1000 (default) | positive integer scalar

traffic — Traffic configuration character vector

R-SCH-SPEC — Reverse Supplemental Channel data rate and frame length character vector

Output Arguments

cfg — Configuration of the parameters and channels used by the waveform generator structure

Top-Level Parameters and Substructures

RPICH Substructure

RACH Substructure

REACH Substructure

RCCCH Substructure

RDCCH Substructure

RFCH Substructure

RSCCH Substructure

RSCH1 Substructure

RSCH2 Substructure

References

Version History

R2026a: To be removed

`wv` — Waveform identification
character vector

`numchips` — Number of chips
`1000` (default) | positive integer scalar

`traffic` — Traffic configuration
character vector

`R-SCH-SPEC` — Reverse Supplemental Channel data rate and frame length
character vector

`cfg` — Configuration of the parameters and channels used by the waveform generator
structure