what is gmsk?
Hey,
I don't have the program files for upload, but it was jsut a small dsp filter for GMSK. Basically an FIR.
I've even done a 'similar' thing in a microcontroller, using LUT's to approximate GMSK driving a high-speed DAC. It wasn't pretty but a simulation in Vissim showed a reduced bandwidth. (you can even simulate that sort of thing in MS excel).
I'm sure everyone in this thread could benefit from searching 'pulse shaping filter' in google, because thats all GMSK really is.
To be honest, I'm no expert, it's just something I did for a friend who wanted to increase the datarate of his RF link without sacraficing BER.
Take care,
BuriedCode.