Simultaneous analog and digital communication using partitioning of bits into words

摘要

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 than the first symbol constellation to produce a second data signal. An additional signal is added to the first data signal to form a first combined signal. Another additional signal is added to the second data signal to form a second combined signal. The first and second combined signals are transmitted over a communication channel.