Simultaneous analog and digital communication using partitioning of bits into words
AssigneeParadyne Corporation
InventorsWilliam Lewis Betts, Gordon Bremer
Life of this patent
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Abstract
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.
Claims24
A communications method comprising the steps of:
- partitioning a predefined number of bits into a first word and a second word;
- mapping said first word into a first symbol constellation having a first number of symbols to produce a first data signal;
- mapping said second word into a second symbol constellation having a second number of symbols to produce a second data signal, said first and second number of symbols being unequal;
- adding a third signal to said first data signal to form a first combined signal;
- adding a fourth signal to said second data signal to form a second combined signal;
- and
- transmitting said combined signals.
A communications method comprising the steps of:
- partitioning a predefined number of bits into a first word and a second word;
- mapping said first word into a first symbol constellation having a first number of symbols to produce a first data signal;
- mapping said second word into a second symbol constellation having a second number of symbols to produce a second data signal, said first and second number of symbols being unequal;
- adding a first analog signal to said first data signal to form a first combined signal, wherein said first data signal and said first analog signal are simultaneously transmitted;
- adding a second analog signal to said second data signal to form a second combined signal, wherein said second data signal and second analog signal are simultaneously transmitted;
- modulating a first carrier signal with said first combined signal to form a first modulated carrier signal;
- modulating a second carrier signal with said second combined signal to form a second modulated carrier signal;
- and
- transmitting said modulated carrier signals.
A system for transmitting data, comprising:
- a means for partitioning a predetermined number of bits into a first word and a second word;
- a means for mapping said first word into a first symbol constellation having a first number of symbols to produce a first data signal;
- a means for mapping said second word into a second symbol constellation having a second number of symbols to produce a second data signal, said first and second number of symbols being unequal;
- a means for adding a third signal to said first data signal to form a first combined signal;
- a means for adding a fourth signal to said second data signal to form a second combined signal;
- and
- a means for transmitting said combined signals.
A system for transmitting data, comprising:
- a means for partitioning a predefined number of bits into a first word and a second word;
- a means for mapping said first word into a first symbol constellation having a first number of symbols to produce a first data signal;
- a means for mapping said second word into a second symbol constellation having a second number of symbols to produce a second data signal, said first and second number of symbols being unequal;
- a means for adding a first analog signal to said first data signal to form a first combined signal, wherein said first data signal and said first analog signal are simultaneously transmitted;
- a means for adding a second analog signal to said second data signal to form a second combined signal, wherein said second data signal and second analog signal are simultaneously transmitted;
- a means for modulating a first carrier signal with said first combined signal to form a first modulated carrier signal;
- a means for modulating a second carrier signal with said second combined signal to form a second modulated carrier signal;
- and
- a means for transmitting said modulated carrier signals.
Dependencies are inferred from the claim text.