Digital data is encoded by partitioning a predetermined number of bits into two separate words. The first word is mapped into a first symbol constellation to produce a first data signal. The second word is mapped into a second symbol constellation that has a different number of symbols ...http://www.google.fr/patents/US5844944?utm_source=gb-gplus-shareBrevet US5844944 - Simultaneous analog and digital communication using partitioning of bits into words
Simultaneous analog and digital communication using partitioning of bits ...