A variation of this algorithm that uses the logarithm of
the channel probability was proposed in [6]. A mix-domain decoder
was introduced in [7] to take advantage of both the log and
frequency domains, and yet avoid computing Fourier transform
in the log main, which is hardware consuming. Nevertheless, the
look-up tables required for the domain conversion demand large
area. In addition, a great amount of multiplications are needed
in frequency-domain decoders