flexframe unified BPSK modulation

[superzaki]

Hi @jgaeddert, et al

Great library - it made DSP learning fun!

I have a question regarding flexframe; does it support a unified BPSK modulation across all frame components (head | preamble | header | tail) and not just payload? this is because BPSK works on payload alone, by design, while other components are QPSK-modulated. Here's the symbols constellation that I obtained:

If possible, I would like to have all symbols BPSK aligned