Constellation Modulator

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

 * Constellation
 * determines the modulation type, provide a Constellation Object here.


 * Samples per Symbol
 * samples per baud >= 2 (int)


 * 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
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.