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(7) Size of step between LG/MG and MG/HG and between each setting of RFBIAS (1-7). The main
purpose is to find the relative difference at different frequencies. Distribute with equal frequency
offset except if there are known ‚worst-case frequencies. Measured at 5 channels, maximum and
minimum steps reported. Average value of minimum and maximum should be used in following
calculations.
(8) Measure properties: Measure the following properties using a modulated signal: WPA-gain
expansion versus output power on mid channel.
Compensation needed for maximum output power over the band (13 channels).
2. Perform offline calculations
(1) Calculate the compensation values for Table 10-6. Store these values in
GD_RF_TXGAIN_TB_SEL_ID.
(2) Extract the range of needed compensation tables (minimum and maximum).
(3) Calculate the expected compensation for each table in dB (use ‚table 0 for the table that is ‚0 dB or
closest to ‚0 dB) and spread out the rest to achieve equidistant compensations.
(4) Calculate and store the 24 sets of tables, GD_RF_TX_GAIN_TB0_ID to
GD_RF_TX_GAIN_TB23_ID. Each set of tables shall include:
One High-gain table: 44 bytes.
One Low-gain table: 44 bytes.
One RFBias table: 22 bytes.
One WDCDCRef table: 44 bytes.
One WPABias table: 44 bytes.
One value for IQ-Gain: 1 bit (will occupy 1 byte).
One value for TABLE_OVERLAP: 1 byte.
One value for UPPER_LIMIT: 1 byte.
(5) Calculate the actual compensation (for maximum output power) that each of these 24 tables will
give. Store this in GD_RF_TX_FREC_INT_ID.
3. Store data in GDFS
Temp.
9612
9637
-15
0
15
30
45
60
75
90
9662
9687
9712
Table 10-6.The Complete Gain Compensation Table
- 213 -
UARFCN
9737
9763
9788
7. CALIBRATION
9813
9838
9863
9888
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