Modulation Coding Scheme/Puncturing Scheme (MCS/PS)

Modulation Coding Scheme / Puncturing Scheme Options

The MCSs are grouped by modulation type. MCS-1 through MCS-4 use GMSK modulation, MCS-5 through MCS-9 use 8PSK modulation, DAS-5 through DAS-9 use 16QAM modulation, while

DAS-10 through DAS-12 use 32QAM modulation. The differences in data rates within these groups of MCSs is affected by the different modulation types in conjunction with puncturing and coding schemes.

You may specify a MCS/PS for each downlink burst in a multislot configuration. The following list contains all the MCS/PS available. The GPIB commands to assign separate MCS/PS to individual bursts are CALL:(PDTCH|PDTChannel):MCSCheme:EBPTest[:BURSt1] and CALL:(PDTCH|PDTChannel):MCSCheme:EBPTest:BURSt<2|3|4|5> .

• GMSK /8PSK /16QAM /32QAM Options

  The set of puncturing schemes available is different across different modulation coding schemes. see the table below.

  Modulation Coding Scheme (MCS)	Data Rate (kb/s)	Puncturing Scheme 1 (PS1)	Puncturing Scheme 2 (PS2)	Puncturing Scheme 3 (PS3)
  MCS 1	8.8	Yes	Yes	No
  MCS 2	11.2	Yes	Yes	No
  MCS 3	14.8	Yes	Yes	Yes
  MCS 4	17.6	Yes	Yes	Yes
  MCS 5	22.4	Yes	Yes	No
  MCS 6	29.6	Yes	Yes	No
  MCS 7	44.8	Yes	Yes	Yes
  MCS 8	54.4	Yes	Yes	Yes
  MCS 9	59.2	Yes	Yes	Yes
  DAS 5	22.4	Yes	Yes	No
  DAS 6	27.2	Yes	Yes	No
  DAS 7	32.8	Yes	Yes	No
  DAS 8	44.8	Yes	Yes	No
  DAS 9	54.4	Yes	Yes	Yes
  DAS 10	65.6	Yes	Yes	No
  DAS 11	81.6	Yes	Yes	Yes
  DAS 12	98.4	Yes	Yes	Yes

     

  NOTE

  Modulation Coding Schemes MCS7-MCS9 and DAS5-DAS12 allow two data blocks to be embedded in each radio block. These data blocks can have the same or different puncturing schemes. For example, if you choose MCS9 PS 3-2 from the MCS / PS menu of the front panel, the test set uses MCS 9, with puncturing scheme 3 on the first data block and puncturing scheme 2 on the second data block. For more information, see How Do I Assign Different Modulation Coding Schemes / Puncturing Schemes to Each Downlink of a Multislot Burst? .

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• 8PSK ClearCoded

  When 8PSK ClearCoded is selected, no encoding is performed on the downlink. The GPIB command mnemonic for 8PSK ClearCloded is EPSKCLEAR.

• 16QAM ClearCoded

  When 16QAM ClearCoded is selected, no encoding is performed on the downlink. The GPIB command mnemonic for 16QAM ClearCloded is QAM16CLEAR.

• 32QAM ClearCoded

  When 32QAM ClearCoded is selected, no encoding is performed on the downlink. The GPIB command mnemonic for 32QAM ClearCloded is QAM32CLEAR.

• As Burst 1

  The As Burst 1 setting of this parameter uses the modulation coding scheme and puncturing scheme is assigned to the first burst of the multislot downlink. The As Burst 1 setting cannot be assigned to burst 1 of the multislot downlink.

Operating Considerations

In order to assign different modulation coding schemes and puncturing schemes to each burst in a multislot downlink, the operating mode must be set to EGPRS BCH, EGPRS BCH+PDTCH or EGPRS BCT+PDTCH+TCH.

Related Topics

How Do I Assign Different Modulation Coding Schemes / Puncturing Schemes to Each Downlink of a Multislot Burst?

CALL:(PDTCH|PDTChannel):MCSCheme:EBPTest[:BURSt1]

CALL:(PDTCH|PDTChannel):MCSCheme:EBPTest:BURSt<2|3|4|5>

EGPRS Data Rate Configurations

Supported Multislot Classes