Difference between revisions of "Constellation Modulator"
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Hierarchical block for RRC-filtered differential generic modulation. The input is a byte stream (unsigned char) and the output is the complex modulated signal at baseband. | Hierarchical block for RRC-filtered differential generic modulation. The input is a byte stream (unsigned char) and the output is the complex modulated signal at baseband. | ||
== Parameters == | == Parameters == | ||
| − | + | ; Constellation | |
| + | : determines the modulation type, provide a [[Constellation Object]] here. | ||
| − | + | ; Samples per Symbol | |
| + | : samples per baud >= 2 (float) | ||
| − | + | ; Differential Encoding | |
| + | : whether to use differential encoding (boolean) | ||
| − | + | ; Excess BW | |
| + | : Root-raised cosine (RRC) filter excess bandwidth (float) | ||
| − | + | ; Verbose | |
| + | : Print information about modulator? (boolean) | ||
| − | + | ; Log | |
| + | : Log modulation data to files? (boolean) | ||
== Example Flowgraph == | == Example Flowgraph == | ||
Latest revision as of 03:03, 15 July 2019
Hierarchical block for RRC-filtered differential generic modulation. The input is a byte stream (unsigned char) and the output is the complex modulated signal at baseband.
Parameters[edit]
- Constellation
- determines the modulation type, provide a Constellation Object here.
- Samples per Symbol
- samples per baud >= 2 (float)
- Differential Encoding
- whether to use differential encoding (boolean)
- Excess BW
- Root-raised cosine (RRC) filter excess bandwidth (float)
- Verbose
- Print information about modulator? (boolean)
- Log
- Log modulation data to files? (boolean)
Example Flowgraph[edit]
This flowgraph modulates random bits with 8-PSK. A QT GUI Constellation Sink is specifically not added to the output because it would show the signal while there is still multiple samples per symbol.
