I'm stuck on how to use pyadi-iio rx data to judge that there is a signal at that frequency and not noise.
For example, the sample_rate is 1MHz, rx_rf_bandwidth is 1MHz, rx_buffer_size is 4096.
There is a qpsk signal at 2472MHz, through the pyadi-iio rx function, I will get 1000000 data per second. Can I accurately judge whether there is a qpsk signal there by taking 4096 data? Whether there are other methods to accurately judge.
Another question is, when I sweep around the 2472MHz frequency, I find that the qpsk signal at the 2472MHz frequency seems to spread to the surrounding frequencies, is this caused by the pyadi iio receive buffer? But in the python code I changed the receive buffer to 1 (sdr._rxadc.set_kernel_buffers_count(1) # Force no elastic buffers) as suggested by Travis.