User`s guide

Agilent PXT Wireless Communications Test Set
User’s Guide
103
Codebook
Controls the Codebook Index in use.
When using TM4 or TM6, there is a choice of which codebook entry to use for pre-coding (see 3GPP
36.211, section 6.3.4.2.3.) For TM4, a Codebook Index of either 1 or 2 can be used when using two layers
and a Codebook Index of 0, 1, 2 or 3 can be used when using one layer. For TM6, there is only one layer –
a Codebook Index of 0, 1, 2, or 3 can be used.
Mode
BSE
Range 0 – 3 (One Layer)
1 – 2 (Two Layers – TM4 only)
Preset
1
Dependencies and/or Couplings
Only applicable when using TM4 or TM6.
Initial S/W Revision 6.0
TM6 added in software release 6.4 for FDD.
TM6 added in software release 6.5 for TDD.
Key Path
Mode > BSE > Mode Setup > More > PHY Settings > DL Resource
Allocation > More > MIMO Setting
Number of Codewords
When using either Transmission Mode 3 (TM3) or Transmission Mode 4 (TM4), it is possible to use either
one or two codewords in every subframe – which results in either one or two transport blocks being
transmitted.
See 3GPP 36.211, section 6.3 for an illustration of the physical channel processing.
In TM3, when using two codewords, DCI Format 2A is used. When using one codeword, DCI Format 1A is
used.
In TM4, when using two codewords, DCI Format 2 is used. When using one codeword, DCI Format 2
continues to be used, but only one codeword is marked as being enabled.
Mode
BSE
Range
1 -2
Preset
2
Dependencies and/or Couplings
Only applicable when using Transmission Mode 3 or 4 (MIMO).
Initial S/W Revision
6.0
Key Path
Mode > BSE > Mode Setup > More > PHY Settings > DL Resource
Allocation > More > MIMO Setting
Codeword 2 MCS Index
When using TM3 or TM4, two transport blocks are sent to the UE in a subframe.
Default: The MCS index value of these transport blocks (also referred to as codewords) is to be the same
and is specified by the I_MCS parameter, by default.