comnum.theory_shannon_limit_ebn0_db

comnum.theory_shannon_limit_ebn0_db(rate)

The smallest Eb/N0 at which BPSK supports a code rate.

Parameters:

rate (float | array_like) – the code rate R.

Returns:

the limit (dB).

Return type:

float | numpy.ndarray

Raises:

ValueError – for values that are not real numbers.

Examples

>>> import comnum
>>> round(comnum.theory_shannon_limit_ebn0_db(0.5), 3)
0.187