Hi
I was seeing in a post from TER that you can use FSK TI or FM chips possibly for BPSK. He stated.
In theory it could be possible the handle BPSK in Tx in the following way:
The basic idea to manage BPSK modulation with a FSK modulator as CC1120 has is to travel on the unit circle 180 degrees as fast as possible. For a FSK modulator, 180 degrees correspond to a deviation equal to half the datarate, so in your case if you need 100 bps the deviation should be 50 Hz.
By using the Analog FM feature in CC1120 (described in 4.1.4 in the UserGuide) it is possible to set the deviation directly. The transition from 0 to 180 degrees should be as fast as possible, hence an idea is to
have the vector equal to [0 0 0 0 0 0 0 dev 0 0 0 0 0 0 0 0]. Since it is 16 ticks during a datarate period dev has to be 16x in this case or 16x50 Hz.
My question is this possible for other TI products . We have a new request to do BPSK for aprox 1 million software radios. We need to be able to change the radians for bpsk 1-180 that is the normal. Then we have to make it also do 1-60 degrees or 1.1 radians.
I appreciate any help you an provide as I have not had great luck with this forum !