Lab 5: FM TX

• It is possible to cheat by adding a 'fudge', or 'twiddle', factor to the Interpolation rate at the Rational Resampler.

• In the example it was:

• int(samp_rate * 1.0)

• We can ask the resampler to produce more samples for the same number of input samples so that the USRP will always have enough samples to transmit

• The Interpolation rate would become:

• int(samp_rate * 1.01)
• The notional output rate was increased by 1% (1.0 + 0.01), which equals = 252500. The USRP UHD Sink will still consume at 250000.