SMIQ
Enhanced Functions For Digital Standard 3GPP W-CDMA (FDD)
1125.5555.03
E-9
2.255
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Common Enhanced Channel Settings
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OVERALL SYMBOL
RATE
Sets the overall symbol rate in ksps and the required uplink DPDCHs.
For an overall uplink symbol rate of up to 960 ksps only one DPDCH is
required in addition to the normally available DPCCH. Further DPDCHs with
960 ksps each are added to the signal to obtain a higher overall symbol rate
(maximum 6 DPDCHs).
The enhanced channel table is adapted depending on the setting for
OVERALL SYMBOL RATE (e.g. number of active enhanced channels). In the
channel table of the higher MS1 menu, the enhanced channels are marked by
an additional E (in addition to CHANNEL NUMBER).
If the CHANNEL CODING STATE switch is set to ON, there is a close relation
between the settings CODING TYPE and OVERALL SYMBOL RATE:
MEASURE__12.2:
OVERALL SYMBOL RATE = 60 ksps
MEASURE__64:
OVERALL SYMBOL RATE = 240 ksps
MEASURE_144:
OVERALL SYMBOL RATE = 480 ksps
MEASURE_384:
OVERALL SYMBOL RATE = 1 * 960 ksps
AMR_CODER:
SYMBOL RATE DPDCH = 60 ksps;
When a parameter is changed (CODING TYPE or OVERALL SYMBOL RATE)
the associated parameter is adapted automatically.
IEC/IEEE-bus command
:SOUR:W3GP:MST:ENH:ORAT X2
DPDCH POWER
Sets the channel power (-60 dB to 0 dB) of the DPDCHs. Each active DPDCH
is sent with this power. If the EXTERNAL POWER CONTROL STATE switch
is set to ON, this power is also the start power for the power control.
Note:
Starting the ADJUST TOTAL POWER menu parameter at the top
menu level of 3GPP W-CDMA adapts all the channel powers
(POWER DB parameter) of the mobile stations (and, thus, also the
POWER START values of the set enhanced channels) so that the
average overall power of all the activated channels is 0 dB with
reference to the LEVEL in the SMIQ display.
IEC/IEEE-bus command
:SOUR:W3GP:MST:ENH: POW:DPDC -30.0
ENHANCED DPCCH
STATE
This parameter is used to determine whether the DPCCH is calculated as
enhanced channel (on the data generator) or as "normal" channel (on the
modulation coder).
STATE = ON
:
The DPCCH is calculated as enhanced channel. This setting is useful when
External Power Control is active.
STATE = OFF
:
The DPCCH is calculated as a normal channel. This setting is useful for all
measurements which require no External Power Control.
IEC/IEEE-bus
:SOUR:W3GP:MST:ENH:DPCC:STAT OFF
