Can we use Cy kits to simulate Digital modulation techniques?
The answer is yes, depending on what mod technique you are trying to effect and
communication mode of interest. AM, FM, PSK, Tone Methods (like CTSS, FSK),
digitakl modes..... http://en.wikipedia.org/wiki/Amateur_radio#Modes_of_communication
AM is straightforward using a multiplying DAC (PSOC 1) or SW and a DAC
for PSOC 3 / 5. Or this approach http://www.psocdeveloper.com/forums/viewtopic.php?f=42&t=6868
There also is a mixer in PSOC 3 / 5 to do modulation.
And using a table and DMA to DAC one could real time modifiy table contents to modulate
Note PSOC 1 does not have DMA, only 3 / 5.
One last comment, a summary of approaches to modulate signals -
1) Via total analog techniques, for example using PSOC 3 / 5 OpAmps for
oscillator signal generation and for modulation of signal generated. Or
Or swcap in PSOC 1 http://www.psocdeveloper.com/uploads/tx_piapappnote/an2044.pdf
2) Partial analog and digital techniques, DACs, Counters, PWM to gen signals,
and DMA, software polling to effect modulation.
3) Verilog and/or UDBs to build a custom modulation engine, like a DDS approach.
PSOC 3 /5.