The source generates K information bits: it is the simulation starting point.
- Type
integer
- Examples
--src-info-bits 64-K 128
Warning
This argument is required only with the UNCODED simulation code type (cf. the sim-sim-cde-type parameter).
- Type
text
- Allowed values
AZCWRANDUSER- Default
RAND- Examples
--src-type AZCW
Description of the allowed values:
| Value | Description |
|---|---|
AZCW |
Set all the information bits to 0. |
RAND |
Generate randomly the information bits based on the Matsumoto1998. |
USER |
Read the information bits from a given file, the path can be set with the src-src-path parameter. |
Note
For the USER type, when the number of simulated frames exceeds the number of frames contained in the files, the frames are replayed from the beginning of the file and this is repeated until the end of the simulation.
- Type
text
- Allowed values
FASTSTD- Default
STD- Examples
--src-implem FAST
Description of the allowed values:
| Value | Description |
|---|---|
STD |
Standard implementation working for any source type. |
FAST |
Fast implementation, only available for the RAND source type. |
- Type
integer
- Default
1
- Examples
--src-fra 8
The default behavior is to generate one frame at a time. This parameter enables to process more than one frame when the generate task (from the source module) is called.
The number of frames consumed and produced when a task is executed is called the inter frame level or . Setting the in the source module will automatically affect the level in all the other simulation modules (c.f. fig_src_fra_inter).
3-way inter frame level in the communication chain.
The also allows multi-user configurations to be simulated (see fig_src_fra_multi_user). This configurations is used when using modulation (see the mdm-mdm-type SCMA parameter).
3-way inter frame level with multi-user channel in the communication chain.
Note
For short frames, increase the can increase the simulation throughput, it can hide task call overheads.
Note
For large frames, increase the can decrease the simulation throughput due the CPU cache size limitation.
- Type
file
- Rights
read only
- Examples
--src-path conf/src/GSM-LDPC_2112.src
An file is expected:
# 'F' has to be replaced by the number of contained frames.
F
# 'K' has to be replaced by the number of information bits.
K
# a sequence of 'F * K' bits (separated by spaces)
B_0 B_1 B_2 B_3 B_4 B_5 [...] B_{(F*K)-1}
- Type
integer
- Default
0
- Examples
--src-start-idx 42
references.bib