LTE FDD

Cell Parameters (Downlink E-UTRA)

For Waveform Playback (ARB) capability.

This topic describes the settings of the Cell Parameters node when the carrier is Downlink E-UTRA.

Cell ID

Physical Layer Cell ID Group

Physical Layer Cell ID Sector

Number of Orthogonal Sequence

System Bandwidth

Total Number of Antennas

Antenna Spacing (Wavelength)

Antenna Port

Power Definition Type

Reference Signal Transmit Power (RSTP)

OFDM Symbol Transmit Power (OSTP)

Total Number of Resource Blocks

Total Number of Occupied Subcarriers

Subcarrier Spacing

Cyclic Prefix

Number of Subcarriers for Resource Block

Number of Symbols for Resource Block

Cell ID

Sets the value for the Cell ID. The software sets the values in the Physical Layer Cell ID Group and Physical Layer Cell ID Sector cells based on the Cell ID entry.

Cell ID = (3 x Physical Cell ID Group) + Physical Cell ID Sector.

See 3GPP TS 36.211.

SCPI Command

[:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:CIDentity <integer>

[:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:CIDentity?

SCPI Example

RADio:LTEFdd:WAVeform:CCARrier:DLINk:CIDentity 1

RADio:LTEFdd:WAVeform:CCARrier:DLINk:CIDentity?

Couplings

Sets Physical Layer Cell ID Group and Physical Layer Cell ID Sector automatically based on Cell ID value.

Preset

1

State Saved

Yes

Min

0

Max

503

Initial S/W Revision

A.20.01

Physical Layer Cell ID Group

Query only

The software sets this value based on the Cell ID setting.

Cell ID = (3 x Physical Cell ID Group) + Physical Cell ID Sector.

See 3GPP TS 36.211.

SCPI Command

[:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:PCID:GROup?

SCPI Example

RADio:LTEFdd:WAVeform:CCARrier:DLINk:PCID:GROup?

Notes

Read-only

Range: 0 to 167

Preset

0

State Saved

No

Min

0

Max

167

Initial S/W Revision

A.20.01

Physical Layer Cell ID Sector

Query only

The software sets this value based on the Cell ID setting.

Cell ID = (3 x Physical Cell ID Group) + Physical Cell ID Sector.

See 3GPP TS 36.211.

SCPI Command

[:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:PCID:SECTor?

SCPI Example

RADio:LTEFdd:WAVeform:CCARrier:DLINk:PCID:SECTor?

Notes

Read-only

Choices: 0 | 1 | 2

See 3GPP TS 36.211

Preset

1

State Saved

No

Min

0

Max

2

Initial S/W Revision

A.20.01

Number of Orthogonal Sequence

Query only.

When you set the value in the Physical Layer Cell ID Sector setting, the software automatically sets the Number of Orthogonal Sequence to the corresponding value.

See 3GPP TS 36.211.

SCPI Command

[:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:ORTHogonal:COUNt?

SCPI Example

RADio:LTEFdd:WAVeform:CCARrier:DLINk:ORTHogonal:COUNt?

Notes

Read Only

Range: 0 to 2

See 3GPP TS 36.211

Preset

1

State Saved

No

Min

0

Max

2

Initial S/W Revision

A.20.01

System Bandwidth

Sets the system bandwidth and number of Resource Blocks (RB).

When you select a system bandwidth, the software automatically adjusts the value in the Total Number of Resource Blocks setting and the Total Number of Occupied Subcarriers setting.

> When the System Bandwidth is decreased, the DL-SCH Tx Sequence window's RB size and few other data channel settings are reconfigured.
> When the System Bandwidth is increased, no change to the DL-SCH Tx Sequence window's RB size occurs. Refer to 3GPP TS 36.211.

SCPI Command

[:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:BANDwidth F1400K|F3M|F5M|F10M|F15M|F20M

[:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:BANDwidth?

SCPI Example

RADio:LTEFdd:WAVeform:CCARrier:DLINk:BANDwidth F10M

RADio:LTEFdd:WAVeform:CCARrier:DLINk:BANDwidth?

Notes

Choices:

1.4 MHz (6RB) | 3 MHz (15RB) | 5 MHz (25RB) | 10 MHz (50RB) | 15 MHz (75RB) | 20 MHz (100RB).

See 3GPP TS 36.211.

Preset

F10M

State Saved

Yes

Min

N/A

Max

N/A

Initial S/W Revision

A.20.01

Total Number of Antennas

Sets the total number of base station antennas. This setting indicates the total number of physical antenna port configuration used for downlink transmission.

For multiple signal generator configurations, set the Channel State parameter in the Fading section to On to make this cell active. When the channel state is Off, you must change the number of signal generators to change the number of BS antennas.

Refer to 3GPP TS 36.211 and 36.311.

SCPI Command

[:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:APORts:COUNt 1|2|4|8

[:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:APORts:COUNt?

SCPI Example

RADio:LTEFdd:WAVeform:CCARrier:DLINk:APORts:COUNt 1

RADio:LTEFdd:WAVeform:CCARrier:DLINk:APORts:COUNt?

Notes

Choices:

1 Antenna | 2 Antennas | 4 Antennas | 8 Antennas

See 3GPP TS 36.211 and 36.311.

Dependencies

Total Number of Antennas and Number of CRS Antenna Ports determine the resource elements reserved for Cell Specific reference signals. Determines available Antenna Port selections.

Preset

1

State Saved

Yes

Min

1

Max

8

Initial S/W Revision

A.20.01

Antenna Spacing (Wavelength)

Sets the value that specifies the distance between antennas. The value is specified in wavelengths units of the center frequency for the corresponding Component Carrier.

Use this setting when generating a beamforming signal.

SCPI Command

[:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:ANTenna:SPACing <real>

[:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:ANTenna:SPACing?

SCPI Example

RADio:LTEFdd:WAVeform:CCARrier:DLINk:ANTenna:SPACing 0.5

RADio:LTEFdd:WAVeform:CCARrier:DLINk:ANTenna:SPACing?

Notes

Range: 0.00 to 100

Preset

0.5

State Saved

Yes

Min

0

Max

100

Initial S/W Revision

A.20.01

Antenna Port

Sets the antenna to be used for transmitting the downlink signal In multi-antenna configurations. The available selections are determined by the Total Number of Antennas setting.

Refer to 3GPP TS 36.211.

SCPI Command

[:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:APORt PORT0|PORT1|PORT2|PORT3|PORT4|PORT5|PORT6|PORT7

[:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:APORt?

SCPI Example

RADio:LTEFdd:WAVeform:CCARrier:DLINk:APORt PORT0

RADio:LTEFdd:WAVeform:CCARrier:DLINk:APORt?

Notes

Choices:

Port 0 | Port 1 | Port 2 | Port 3 | Port 4 | Port 5 | Port 6 | Port 7

See 3GPP TS 36.211.

Couplings

Available selections are determined by Total Number of Antennas setting. When Total Number of Antennas is 1, this setting becomes read-only.

Total Number of Antenna= TOA

  • When TOA =2 then Antenna Port is PORT0 and PORT1.

  • When TOA =4 then Antenna Port is PORT0 to PORT3.

  • When TOA=8 then Antenna Port is PORT0 to PORT7.

Preset

PORT0

State Saved

Yes

Min

N/A

Max

N/A

Initial S/W Revision

A.20.01

Power Definition Type

Selects the power definition type for the primary cell.

The power definition type for secondary cells is automatically set the same type as that of the primary cell and is read-only.

In multiple carrier case, Power Definition Type setting in each carrier should be same.

If Power Definition Type is set to Total Power, power reference is Amplitude parameter on Instrument node; RSTP and OSTP are automatically calculated.

If Power Definition Type is set to RSTP, power reference is RSTP; Amplitude parameter on Instrument node, Power parameter on Component Carrier, and OSTP are automatically calculated (CC Power becomes read-only).

If uplink and downlink carriers are mixed as multiple carriers, correct RSTP calculation is not available.

SCPI Command

[:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:POWer:DEFinition TOTal|RSTP

[:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:POWer:DEFinition?

SCPI Example

RADio:LTEFdd:WAVeform:CCARrier:DLINk:POWer:DEFinition TOTal

RADio:LTEFdd:WAVeform:CCARrier:DLINk:POWer:DEFinition?

Notes

Choices: Total Power | RSTP

Preset

TOTal

State Saved

Yes

Min

N/A

Max

N/A

Initial S/W Revision

A.20.01

Reference Signal Transmit Power (RSTP)

Sets the Reference Signal Transmit Power, in dBm, when the Power Definition Type is RSTP. Otherwise, displays the Reference Signal Transmit Power (RSTP), in dBm and the value is updated after generation.

In case Power Definition Type is Total Power, RSTP is automatically calculated by Amplitude parameter in Instrument, Power parameter in Component Carrier, and each carrier signal settings.

In case Power Definition Type is RSTP, Amplitude parameter in Instrument and Power parameter in the Component Carrier is automatically calculated and the value is set as read-only.

Available setting range and step depends on hardware.

See 3GPP TS 36.141.

SCPI Command

[:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:RSTP <rel_ampl>

[:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:RSTP?

SCPI Example

RADio:LTEFdd:WAVeform:CCARrier:DLINk:RSTP -40.79

RADio:LTEFdd:WAVeform:CCARrier:DLINk:RSTP?

Notes

Range: -15.00 to -144.00 dBm

Preset

-40.79

State Saved

Yes

Min

-144

Max

-15

Initial S/W Revision

A.20.01

OFDM Symbol Transmit Power (OSTP)

Query only

Displays the Downlink OFDM Symbol Transmit Power, in dBm. This setting is automatically set by the software based on Power Definition Type, Instrument Amplitude, Component Carrier Power, and signal settings.

For detailed information about OSTP, refer to 3GPP TS 36.141.

SCPI Command

[:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:OSTP?

SCPI Example

RADio:LTEFdd:WAVeform:CCARrier:DLINk:OSTP?

Notes

Read-only

See 3GPP TS 36.141

Preset

-13.01

State Saved

No

Min

-60

Max

50

Initial S/W Revision

A.20.01

Total Number of Resource Blocks

Query only

The value for this setting is set automatically by the software based on the System Bandwidth setting.

SCPI Command

[:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:RB:COUNt?

SCPI Example

RADio:LTEFdd:WAVeform:CCARrier:DLINk:RB:COUNt?

Notes

Read-only

Range

Automatically set by System Bandwidth:

6 (1.4MHz), 15 (3MHz), 25 (5MHz), 50 (10MHz), 75 (15MHz), 100 (20MHz).

Preset

50

State Saved

No

Min

6

Max

100

Initial S/W Revision

A.20.01

Total Number of Occupied Subcarriers

Query only

The value for this setting is set automatically by the software based on the System Bandwidth setting.

The center subcarrier is not used for downlink transmission. So, the number of transmitted subcarriers is one less than the number of occupied subcarriers.

SCPI Command

[:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:SCARrier:COUNt?

SCPI Example

RADio:LTEFdd:WAVeform:CCARrier:DLINk:SCARrier:COUNt?

Notes

Read-only

Center subcarrier not used for DL; transmitted subcarriers = occupied - 1.

Preset

601

State Saved

No

Min

73

Max

1201

Initial S/W Revision

A.20.01

Subcarrier Spacing

Query only

Displays the subcarrier spacing for the downlink. Only 15 kHz spacing is available in this release.

SCPI Command

[:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:SCARrier:SPACing?

SCPI Example

RADio:LTEFdd:WAVeform:CCARrier:DLINk:SCARrier:SPACing?

Notes

Read-only

Fixed at 15 kHz in this release.

Preset

15 kHz

State Saved

No

Min

N/A

Max

N/A

Initial S/W Revision

A.20.01

Cyclic Prefix

Sets Normal or Extended cyclic prefix.

SCPI Command

[:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:CP NORMal|EXTended

[:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:CP?

SCPI Example

RADio:LTEFdd:WAVeform:CCARrier:DLINk:CP NORMal

RADio:LTEFdd:WAVeform:CCARrier:DLINk:CP?

Notes

Choices: Normal | Extended.

Couplings

The software sets the Number of Symbols for Resource Block based on the cyclic prefix selection.

  • 7 for Normal cyclic prefix

  • 6 for Extended cyclic prefix

Preset

NORM

State Saved

Yes

Min

N/A

Max

N/A

Initial S/W Revision

A.20.01

Number of Subcarriers for Resource Block

Query only

Displays the number of consecutive subcarriers in a downlink resource block.

SCPI Command

[:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:RB:SCARrier:COUNt?

SCPI Example

RADio:LTEFdd:WAVeform:CCARrier:DLINk:RB:SCARrier:COUNt?

Notes

Read-only

Fixed at 12

Preset

12

State Saved

No

Min

N/A

Max

N/A

Initial S/W Revision

A.20.01

Number of Symbols for Resource Block

Query only

Displays the number of consecutive OFDM symbols in a downlink slot.

SCPI Command

[:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:RB:SYMBol:COUNt?

SCPI Example

RADio:LTEFdd:WAVeform:CCARrier:DLINk:RB:SYMBol:COUNt?

Notes

Read-only.

  • 7 for Normal Cyclic Prefix

  • 6 for Extended Cyclic Prefix

Couplings

Automatically set by Cyclic Prefix:

  • 7 symbols when Normal

  • 6 symbols when Extended

Preset

7

State Saved

No

Min

6

Max

7

Initial S/W Revision

A.20.01

Carrier Downlink ARB

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