Enhanced Functions For Digital Standard 3GPP W-CDMA (FDD)
SMIQ
1125.5555.03
2.248
E-9
2.15.3.1.5
Further Setting of Enhanced Channels Menu
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Common Enhanced Channels Settings
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SEQUENCE LENGTH
P-CCPCH/BCH
With Enhanced P-CCPCH/BCH State On in the downlink, the sequence length
of the P-CCPCH/BCH is displayed. The length is always 4096 frames and
cannot be edited.
IEC/IEEE-bus command (query)
:SOUR:W3GP:BST:ENH:PCCP:SLEN?
SEQUENCE LENGTH
Sets the sequence length in radio frames used to calculate the 3 GPP W-
CDMA enhanced channel signal component on DGEN.
Depending on the currently available free DGEN list memory, the currently
available maximum frame sequence length is displayed in the middle of the
menu parameter line.
Note
:
After triggering a new calculation, the 3GPP W-CDMA signal
component calculated on DGEN is stored in a hidden data list. The
maximum number of radio frames depends on the currently
available free DGEN list memory for the hidden data list max. 80
Mbit).
In addition to the free DGEN list memory the maximum sequence length
crucially depends on the ENHANCED P-CCPCH/BCH state and the number of
DPCHs:
ENHANCED P-CCPCH/BCH STATE = OFF
1 DPCH:
1022 frames
2 DPCHs:
511 frames
3 DPCHs:
341 frames
4 DPCHs:
255 frames
ENCHANCED P-CCPCH/BCH STATE = ON
SYMBOL RATE DPCH
≤
30 ksps:
2044 frames
SYMBOL RATE DPCH >30 ksps:
500 frames
IEC/IEEE-bus command
:SOUR:W3GP:BST:ENH:SLEN 123
SYMBOL RATE DPCH
Sets symbol rate of all downlink enhanced channels in ksps.
If the CHANNEL CODING STATE switch is set to ON, there is a close relation
between the settings CODING TYPE and SYMBOL RATE DPCH:
MEASURE_12.2KBPS :
SYMBOL RATE DPCH = 30 ksps
MEASURE_64KBPS :
SYMBOL RATE DPCH = 120 ksps
MEASURE_144KBPS :
SYMBOL RATE DPCH = 240 ksps
MEASURE_384KBPS :
SYMBOL RATE DPCH = 480 ksps
AMR_CODEC :
SYMBOL RATE DPCH = 30 ksps;
When a parameter is changed (CODING TYPE or SYMBOL RATE DPCH) the
associated parameter is adapted automatically.
In the higher BS1 menu the SYMBOL RATE settings of all activated enhanced
channels are automatically updated in the channel table.
IEC/IEEE-bus command
:SOUR:W3GP:BST:ENH:SRAT D30K
