One cell specific reference signal is transmitted from each downlink antenna port.
The downlink cell specific reference signal can be used for the following purposes:
Cell search and initial acquisition
Downlink channel quality measurements
Downlink channel estimation for coherent demodulation/detection at the UE
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2. Cell Specific Reference Signals (CRS) |
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Cell Specific Reference Signal Power CRS Antenna Mapping Configuration |
Range: -60.000 to 20.000 dB
Default: 0.000 dB
Enter a power level in dB for the cell specific reference signal. Refer to the Output Power Calculation.
Choice: 1 | 2 | 4
Default: 1
Double-click or use the drop-down menu to select the number of antennas for Cell Specific Reference Signals (CRS).
When the Total Number of Antennas value is changed, the software automatically sets the Number CRS Antenna Ports parameter.
The Number of CRS Antenna Ports must be ≤ the Total number of Antennas.
The Total Number of Antennas and the Number of CRS Antenna Ports are set respectively.
Choice: Auto | Manual
Default Auto
Double-click or use the drop-down menu to select the CRS Antenna Mapping Configuration.
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Auto |
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CRS ports 0–3 are automatically mapped to the physical antennas by the software. |
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Manual |
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The ports require mapping to the physical antennas, see the CRS0 | 1 | 2 | 3 Antenna Mapping setting. |
Choices: 0 (Off) | 1 (On)
Default: 1
Coupling: Inactive unless CRS Antenna Mapping Configuration is set to Manual.
The number of CRS ports that are displayed is dependent on the number of antennas in the configuration and the Number of CRS Antenna Ports setting.
Enter comma separated values of 0 or 1 to assign the cell specific reference signal (CRS) port a physical antenna
For example using a four antenna configuration with the Number of CRS Antenna Ports set to 4, the CRS port are assigned to the following antennas:
physical antenna 3: CRS0 Antenna Mapping = 0,0,1,0
physical antenna 1: CRS1 Antenna Mapping = 1,0,0,0
physical antenna 2: CRS2 Antenna Mapping = 0,1,0,0
physical antenna 4: CRS3 Antenna Mapping = 0,0,0,1
Choice: pB/pA=1 | P_B=0 | P_B=1 | P_B=2 | P_B=3
Default: pB/pA=1
Double-click or use the drop-down menu to select the PDSCH cell specific ratio.