LTE FDD

Cell Parameters (Basic Downlink)

For Waveform Playback (ARB) capability.

This topic describes the settings of the Cell Parameters node when the carrier is Basic Downlink.

Cell ID

Physical Layer Cell ID Group

Physical Layer Cell ID Sector

System Bandwidth

Total Number of Antennas

Antenna Port

Power Definition Type

Reference Signal Transmit Power (RSTP)

OFDM Symbol Transmit Power (OSTP)

Total Number of Resource Blocks

Total Number of Occupied Sub-carriers

Subcarrier Spacing

Cyclic Prefix

Number of Subcarriers for Resource Block

Number of Symbols for Resource Block

Cell ID

Sets a value for Cell ID. The PathWave Signal Generator software sets Physical Layer Cell ID Group and Physical Layer Cell ID Sector based on this value.

Reference: 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?

Notes

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

Dependencies

Sets Physical Layer Cell ID Group and Physical Layer Cell ID Sector.

Preset

1

State Saved

Yes

Min

0

Max

503

Initial S/W Revision

A.20.01

Physical Layer Cell ID Group

Displays the Physical Layer Cell ID Group. Value set by software based on Cell ID.

Reference: 3GPP TS 36.211

SCPI Command

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

SCPI Example

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

Notes

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

Range: 0 to 167 (related to cell ID) 

Dependencies

Coupled to Cell ID.

Preset

0

State Saved

Yes

Min

N/A

Max

N/A

Initial S/W Revision

A.20.01

Physical Layer Cell ID Sector

Displays the Physical Layer Cell ID Sector. Value set by software based on Cell ID.

Reference: 3GPP TS 36.211

SCPI Command

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

SCPI Example

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

Note

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

Range: 0 | 1 | 2

Dependencies

Coupled to Cell ID.

Preset

1

State Saved

Yes

Min

N/A

Max

N/A

Initial S/W Revision

A.20.01

System Bandwidth

Sets system bandwidth and number of Resource Blocks. The PathWave Signal Generator Software automatically adjusts Total Number of Resource Blocks and Total Number of Occupied Sub-carriers.

Resource blocks and parameters are reconfigured when bandwidth changes.

SCPI Command

[:SOURce]:RADio:LTEFdd:WAVeform[:ARB]:CCARrier<channel>:DLINk:BANDwidth B1M4|B3M|B5M|B10M|B15M|B20M

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

SCPI Example

RADio:LTEFdd:WAVeform:CCARrier:DLINk:BANDwidth B10M

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

Dependencies

Sets Total Number of Resource Blocks, Total Number of Occupied Sub-carriers, and Base Sampling Rate.

Preset

B10M

State Saved

Yes

Initial S/W Revision

A.20.01

Total Number of Antennas

Specifies the total number of physical antenna port configurations for the downlink transmission.

Combination with Number of CRS Antenna Ports determines reserved resource elements for cell-specific reference signals.

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?

Dependencies

 

Preset

1

State Saved

Yes

Min

1

Max

8

Initial S/W Revision

A.20.01

Antenna Port

Specifies physical antenna port for transmitting downlink signals. Available selections are determined by Total Number of Antennas.

SCPI Command

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

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

SCPI Example

RADio:LTEFdd:WAVeform:CCARrier:DLINk:APORt 0

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

Notes

When:

  • Total Number of Antennas is 1, Antenna Port range is 0.

  • Total Number of Antennas is 2, Antenna Port range is 0,1.

  • Total Number of Antennas is 4, Antenna Port range is 0,1,2,3.

  • Total Number of Antennas is 8, Antenna Port range is 0,1,2,3,4,5,6,7.

Preset

0

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 primary cell. Secondary cells (read-only) automatically use the same type.

SCPI Command

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

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

SCPI Example

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

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

Dependencies

All carriers in the aggregation must use the same Power Definition Type. This setting controls read-only state of RSTP and Power.

Preset

TOT

State Saved

Yes

Initial S/W Revision

A.20.01

Reference Signal Transmit Power (RSTP)

Sets the Reference Signal Transmit Power. Automatically calculated from Amplitude, Power, and carrier signal settings.

Reference: 3GPP TS 36.141

SCPI Command

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

SCPI Example

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

Dependencies

Editable only when Power Definition Type is RSTP.

Preset

-40.79

State Saved

Yes

Min

-144 (if power def is RSTP)

Max

10 (if power def is RSTP)

Initial S/W Revision

A.20.01

OFDM Symbol Transmit Power (OSTP)

Displays the OFDM Symbol Transmit Power. Value set by software.

SCPI Command

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

SCPI Example

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

Dependencies

If Cyclic Prefix is set to Extended, then OFDM is not visible.

Preset

-13.01

State Saved

Yes

Min

N/A

Max

N/A

Initial S/W Revision

A.20.01

Total Number of Resource Blocks

Displays the total number of resource blocks. The value for this setting is set 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?

Preset

50

State Saved

Yes

Min

N/A

Max

N/A

Initial S/W Revision

A.20.01

Total Number of Occupied Sub-carriers

Displays the total number of occupied sub-carriers. The value for this setting is set by the software based on the System Bandwidth setting.

SCPI Command

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

SCPI Example

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

Notes

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

Preset

601

State Saved

Yes

Min

N/A

Max

N/A

Initial S/W Revision

A.20.01

Subcarrier Spacing

Displays subcarrier spacing for downlink. Only 15 kHz supported in this release.

SCPI Command

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

SCPI Example

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

Preset

15 kHz

State Saved

Yes

Initial S/W Revision

A.20.01

Cyclic Prefix

Selects Normal or Extended cyclic prefix. The PathWave Signal Generator software sets Number of Symbols for Resource Block based on this selection.

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 NORM

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

Preset

NORM

State Saved

Yes

Initial S/W Revision

A.20.01

Number of Subcarriers for Resource Block

Displays the number of consecutive subcarriers in downlink resource block. This is always 12.

SCPI Command

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

SCPI Example

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

Preset

12

State Saved

Yes

Min

N/A

Max

N/A

Initial S/W Revision

A.20.01

Number of Symbols for Resource Block

Displays the number of consecutive OFDM symbols in the 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

The value for this setting is set by the software based on Cyclic Prefix (Normal=7, Extended=6).

Preset

7

State Saved

Yes

Min

N/A

Max

N/A

Initial S/W Revision

A.20.01

Carrier Downlink ARB

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