Introduction - If you have any usage issues, please Google them yourself
ABSTRACT
In the matter of channel coding and spectral
efficiency, up to the invention of turbo codes, 3
dB or more stood between what the theory
promised and what real systems were able to
offer. This gap has now been removed, allowing
communication systems to be designed with
quasi-optimum performance. Ten years after the
first publication on this new technique, turbo
codes have commenced their practical service.