I'm looking for a simple-to-implement yet inteference resistent digital
modulation technique which can be used over long distances (several
kilometers) and up to 20kbits/sec transfer rate.
OFDM seems way to complex and expensive to implement. I noticed that FSK
modulation is often used, but I recently also discoverd PPM-AM which seems
very simple also.
Anyone know anything about the interference resistance of both of these? I
mean, how well do they work in inclement weather.
