WCDMA3G_RF_CCDF
Description: RF signal complementary cumulative distribution function
Library: 3GPPFDD, Measurement
Class: TSDFWCDMA3G_RF_CCDF
Parameters
Name |
Description |
Default |
Unit |
Type |
Range |
|---|---|---|---|---|---|
StartSym |
symbol from which measurement begin |
0 |
|
int |
[0, ∞) |
BurstLen |
length of input signal burst |
2560 |
|
int |
[1:65536) |
OutputPoint |
indicate output precision |
100 |
|
int |
[1:65536) |
BurstNum |
number of bursts |
1 |
|
int |
[1:65536] |
RLoad |
load resistance |
50.0 |
Ohm |
real |
(0, ∞) |
RTemp |
temperature of reference resistor, in degrees C |
-273.15 |
|
real |
[-273.15, ∞) |
Rref |
reference resistance |
50.0 |
Ohm |
real |
(0, ∞) |
Pin Inputs
Pin |
Name |
Description |
Signal Type |
|---|---|---|---|
1 |
in |
input signals |
timed |
Notes/Equations
- This subnetwork model is used to measure the complementary cumulative distribution function (CCDF) of the RF signal. The schematic is shown in the following figure.
Each firing, starting at StartSym, BurstNum × BurstLen signals are input (BurstLen is the length of slot and BurstNum is the number of slots to be measured).
WCDMA3G_RF_CCDF Schematic
WCDMA3G_RF_DisFunc measures the distribution function according to input signal power; results are collected by four NumericSink components. The distribution range is sent to the NumericSink identified as SignalRange and is divided into segments according to OutputPoint. The corresponding distribution probability is calculated based on these segments and sent to the NumericSink identified as CCDF.
WCDMA3G_RF_DisFunc calculates peak power of 99.9% probability and average power of the input signals. These results are collected by the NumericSinks identified as PeakPower and MeanPower.
Note that PeakPower, MeanPower and SignalRange units are dBm; SignalRange is the absolute signal power minus MeanPower.
Typical simulation results are shown in the following figure.
Typical Simulation Results
- The 3GPP system chip rate is 3.84 Mcps. The BS_Tx_CCDF.dsn design demonstrates the use of this subnetwork model in the Examples WCDMA3G/WCDMA3G_BS_Tx_prj; this project is discussed in Base Station Transmitter Design Examples.