evdoReverseWaveformGenerator

(To be removed) Generate 1xEV-DO reverse link waveform

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

Syntax

waveform = evdoReverseWaveformGenerator(cfg)

Description

waveform = evdoReverseWaveformGenerator(cfg) returns the 1xEV-DO reverse link waveform as defined by the parameter configuration structure, cfg.

The top-level parameters and lower-level substructures of cfg specify the waveform and channel properties used by the function to generate a 1xEV-DO waveform. You can generate cfg by using the evdoReverseReferenceChannels function.

Note

The tables herein list the allowable values for the top-level parameters and substructure fields. However, not all parameter combinations are supported. To ensure that the input argument is valid, use the evdoReverseReferenceChannels function. If you input the structure fields manually, consult [1] to ensure that the input parameter combinations are permitted.

Examples

Generate 1xEV-DO Reverse Channel Waveform

Create a structure to generate a Release 0, 1xEV-DO waveform having a 19.2 kbps data rate.

config = evdoReverseReferenceChannels('Rel0-19200');

Verify that the packet has a data rate of 19.2 kbps.

config.PacketSequence.DataRate

ans = 
19200

Generate the complex waveform.

wv = evdoReverseWaveformGenerator(config);

Input Arguments

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
Release	'Release0' | 'RevisionA'	1xEV-DO applicable standard
LongCodeMaskI	42-bit binary number	Long code identifier for in-phase channel
LongCodeMaskQ	42-bit binary number	Long code identifier for quadrature channel
NumChips	Positive scalar integer	Number of chips in the waveform
OversamplingRatio	Positive scalar integer	Oversampling ratio at output
FilterType	'cdma2000Long' | 'cdma2000Short' | 'Custom' | 'Off'	Specify the filter type or disable filtering
CustomFilterCoefficients	Real vector	Custom filter coefficients (applies when FilterType 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')
ACKChannel	Structure	See ACKChannel substructure.
PilotChannel	Structure	See PilotChannel substructure.
AuxPilotChannel	Not present or structure	See AuxPilotChannel substructure.
PacketSequence	Structure	See PacketSequence substructure.

ACKChannel Substructure

Include the ACKChannel substructure in the cfg structure to specify the acknowledgment channel. The ACKChannel substructure contains these fields.

Parameter Fields	Values	Description
Enable	'On' | 'Off'	Character vector to enable or disable the channel
Power	Real scalar	Channel power (dBW)
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.

PilotChannel Substructure

Include the PilotChannel substructure in the cfg structure to specify the pilot channel. The PilotChannel substructure contains these fields.

Parameter Fields	Values	Description
Enable	'On' | 'Off'	Character vector to enable or disable the channel
Power	Real scalar	Channel power (dBW)
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.
EnableCoding	'On' | 'Off'	Enable channel coding

AuxPilotChannel Substructure

Include the AuxPilotChannel substructure in the cfg structure to specify the auxiliary pilot channel, which is available only for Revision A. The AuxPilotChannel substructure contains these fields.

Parameter Fields	Values	Description
Enable	'On' | 'Off'	Character vector to enable or disable the channel
Power	Real scalar	Channel power (dBW)
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.
EnableCoding	'On' | 'Off'	Enable channel coding

PacketSequence Substructure

Include the PacketSequence substructure in the cfg structure to define a sequence of data packets for consecutive transmission. The PacketSequence substructure contains these fields.

Parameter Field	Values	Description
Power	Real scalar	MAC index associated with the packet
EnableCoding	'Off' | 'On'	Enable error correction 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.
Release 0
DataRate	9600 | 19200 | 38400 | 76800 | 153600	Data rate (bps)
Revision A
PacketSize	128 | 256 | 512 | 768 | 1024 | 1536 | 2048 | 3072 | 4096 | 6144 | 8192 | 12288	Packet size (bits)
NumSlots	4 | 8 | 12 | 16	Number of slots

Output Arguments

waveform — Modulated baseband waveform comprising the physical channels

complex vector array

Modulated baseband waveform comprising the 1xEV-DO physical channels, returned as a complex vector array.

References

[1] 3GPP2 C.S0024–A v3.0. "cdma2000 High Rate Packet Data Air Interface Specification." 3rd Generation Partnership Project 2.

Version History

Introduced in R2015b

R2026a: To be removed

evdoReverseWaveformGenerator will be removed in a future release.