Multiplex transmission system wherein analog signal is transformed to base band random-transformed and superimposed on dispersed signal points in vector signal space

A transmission system comprising a transmitter;

• a receiver;
• and an analog transmission line interconnecting the transmitter and the receiver;
• said transmitter comprising:
• a base band transformation means for receiving an analog signal in the form of a passband signal and transforming the analog signal into a first vector base band signal;
• a time division multiplex means;
• a vector signal superimposing means;
• a signal information division means for receiving the first vector base band signal and dividing information included in the first vector base band signal into first and second portions, wherein the first portion of the information is supplied to the time division multiplex means as a first digital signal, and the second portion of the information is supplied to the vector signal superimposing means as a second vector base band signal;
• a data signal point generation means;
• said time division multiplex means having first and second signal input ports and at least one signal output port, for receiving the first digital signal from the signal information division means through the first signal input port, and a second digital signal through the second signal input port, and multiplexing the first and second digital signals to supply a multiplexed digital signal to the data signal point generation means;
• the data signal point generation means receiving the multiplexed digital signal and generating a third vector base band signal representing a data signal point in a vector signal space, based on a block of samples of the received multiplexed digital signal, wherein the generated data signal point is one of a plurality of predetermined data signal points in the vector signal space;
• the vector signal superimposing means superimposing a plurality of vector components of the second vector base band signal on a plurality of vector components of the third vector base band signal, component by component, to generate a superimposed vector base band signal;
• and
• a modulation means for modulating the superimposed vector base band signal to generate an analog modulated signal first digital signal to be transmitted through an analog transmission line;
• and
• said receiver comprising:
• a demodulator means for receiving the analog modulated signal transmitted through the analog transmission line and demodulating the analog modulated signal to regenerate the superimposed vector base band signal;
• a decision means for receiving the regenerated superimposed vector base band signal, and determining to which one of the plurality of predetermined data signal points in the vector signal space the regenerated superimposed vector base band signal corresponds, to regenerate the third vector base band signal;
• a code transformation means receiving the third vector base band signal, and transforming the third vector base band signal to the multiplexed digital signal to regenerate the multiplexed digital signal;
• a signal synthesis means;
• a vector signal subtractor means for receiving the regenerated superimposed vector base band signal and the regenerated third vector base band signal, and subtracting a plurality of vector components of the third vector base band signal from a plurality of vector components of the superimposed vector base band signal, component by component, to regenerate the respective vector components of the second vector base band signal, wherein the regenerated second vector base band signal is supplied to said signal synthesis means;
• a time division demultiplex means for receiving the regenerated multiplexed digital signal, and demultiplexing the regenerated multiplexed digital signal to regenerate the first and second digital signals, wherein the regenerated first digital signal is supplied to the signal synthesis means;
• a passband signal transformation means;
• the signal synthesis means receiving the regenerated second vector base band signal and the regenerated first digital signal, and synthesizing these signals to regenerate the first vector base band signal, wherein the regenerated first vector base band signal is supplied to the passband transformation means;
• and
• the passband signal transformation means receiving the regenerated first base band signal, and transforming the regenerated first base band signal to the analog signal in the form of the passband signal.

A transmission system comprising a transmitter;

• a receiver;
• and an analog transmission line interconnecting the transmitter and the receiver;
• said transmitter comprising:
• a plurality of base band transformation means respectively provided for a plurality of channels of analog passband signals, each of the plurality of base band transformation means receiving an analog passband signal of the channel corresponding to each of said base band transformation means and transforming the analog passband signal into a base band signal;
• a time division multiplex means;
• a plurality of quantization means respectively provided for a plurality of channels of analog passband signals, each of the plurality of quantization means receiving the respective base band signal generated by the base band transformation means provided for that channel, extracting a first portion of information for the respective channel from the received based band signal, and quantizing the first portion of information to supply the quantized first portion of information to the time division multiplex means;
• a plurality of remainder signal generation means respectively provided for a plurality of channels of analog passband signals, each of the plurality of remainder signal generation means receiving the base band signal from the base band transformation means provided for the respective channel, and generating a second portion of information for the respective channel based on the received base band signal;
• the time division multiplex means receiving the quantized first portions of information for the plurality of channels, and multiplexing first portions of information for the plurality of channels to generate a multiplexed signal;
• a data signal point generation means for receiving the multiplexed signal, and generating a data signal point signal representing a data signal point based on the multiplexed signal, wherein the generated data signal point is one of a plurality of predetermined data signal points in the vector signal space;
• a signal adder coupled to said remainder signal generation means and said data signal point generation means, for superimposing the second portion of information for the plurality of channels on the data signal point signal;
• and
• a modulation means for receiving and modulating the data signal point signal on which second portions of information are superimposed to transform the data signal point signal on which the second portions of information are superimposed, to an analog modulated signal to be transmitted to the receiver through the analog transmission line;
• said receiver comprising:
• a demodulator and equalizer means for receiving and demodulating the analog modulated signal transmitted to the transmitter;
• a decision means for determining the data signal point included in the signal demodulated and equalized by the demodulator and equalizer means, to regenerate the data signal point signal;
• a vector signal subtracter for obtaining a difference between the signal demodulated and equalized by the demodulator and equalizer means, and the data signal point signal regenerated by the decision means;
• a code transformation means for receiving and transforming the data signal point signal regenerated by the decision means to regenerate the multiplexed signal;
• a time division demultiplex means for receiving and demultiplexing the multiplexed signal to regenerate the quantized first portions of information for the plurality of channels;
• a plurality of signal synthesis means respectively provided for the plurality of channels, each of the plurality of signal synthesis means receiving the first and second portions of information for respective channel, and regenerating the base band signal for the channel, based on the first and second portions of information for the channel, wherein each of the plurality of signal synthesis means comprises an inverse quantization means provided for each of the plurality of channels, each of the plurality of inverse quantization means receiving and inversely quantizing the quantized first portion of information for the channel, to regenerate the first portion of information for the channel;
• and
• a passband transformation means respectively provided for the plurality of channels, each of the plurality of passband transformation means receiving the base band signal for the channel, and transforming the base band signal to regenerate the passband signal for the channel.

A transmitter for transmitting information included in at least one analog signal, comprising:

• a data signal point generation means for receiving a serial digital data signal, and generating a first vector base band signal in a vector signal space, based on a block series of samples of the received serial digital data signal, wherein a generated data signal point is one of a plurality of predetermined data signal points in the vector signal space;
• a base band signal transformation means for receiving an analog signal in the form of an analog passband signal and transforming the analog passband signal into a second vector base band signal,
• a vector signal superimposing means for superimposing a plurality of vector components of the second vector base band signal on a plurality of vector components of the first vector base band signal, component by component, to generate a superimposed vector base band signal;
• and
• a modulating means for modulating the superimposed vector base band signal to generate an analog modulated signal to be transmitted through an analog transmission line.

A receiver for receiving information carried by at least one analog signal, comprising:

• a demodulator means for receiving an analog modulated signal transmitted through an analog transmission line and demodulating the analog modulated signal to regenerate a superimposed vector base band signal generated in a transmitter;
• a decision means for receiving the regenerated superimposed vector base band signal and determining to which one of the plurality of predetermined data signal points in a vector signal space the regenerated superimposed vector base band signal corresponds, to regenerate a first vector base band signal generated in said transmitter;
• a vector signal subtracter means for receiving the regenerated superimposed vector base band signal and the regenerated first vector base band signal and subtracting a plurality of vector components of the first vector base band signal from a plurality of vector components of the superimposed vector base band signal, component by component, to regenerate the respective vector components of a second base band signal;
• a code transformation means for receiving the first vector base band signal, and transforming the first vector base band signal to regenerate a serial digital data signal received by said transmitter;
• and
• a passband transformation means for receiving the regenerated second base band signal, and transforming the regenerated second base band signal to regenerate the analog signal in the form of the analog passband signal.

A transmitter for transmitting information carried by at least one analog signal, comprising:

• a base band transformation means for receiving an analog signal in the form of a passband signal and transforming the analog signal into a first vector base band signal;
• a time division multiplex means;
• a vector signal superimposing means;
• a signal information division means for receiving the first vector base band signal and dividing information included in the first vector base band signal into first and second portions, wherein the first portion of the information is supplied to the time division multiplex means as a first digital signal, and the second portion of the information is supplied to the vector signal superimposing means as a second vector base band signal;
• a data signal point generation means;
• said time division multiplex means having first and second signal input ports and at least one signal output port, for receiving the first digital signal from the signal information division means through the first signal input port, and a second digital signal through the second signal input port, and multiplexing the first and second digital signals to supply a multiplexed digital signal to the data signal point generation means;
• the data signal point generation means receiving the multiplexed digital signal and generating a third vector base band signal representing a data signal point in a vector signal space, based on a block of samples of the received multiplexed digital signal, wherein the generated data signal point is one of a plurality of predetermined data signal points in the vector signal spaces;
• the vector signal superimposing means superimposing a plurality of vector components of the second vector base band signal on a plurality of vector components of the third vector base band signal, component by component, to generate a superimposed vector base band signal;
• and
• a modulation means for modulating the superimposed vector base band signal to generate an analog modulated signal to be transmitted through an analog transmission line.

A transmitter for transmitting information carried by at least one analog signal, comprising:

• a plurality of base band transformation means respectively provided for a plurality of channels of analog passband signals, each of the plurality of base band transformation means receiving an analog passband signal of the channel corresponding to each of said base band transformation means and transforming the analog passband signal into a base band signal;
• a time division multiplex means;
• a plurality of quantization means respectively provided for a plurality of channels of analog passband signals, each of the plurality of quantization means receiving the respective base band signal generated by the base band transformation means provided for that channel, extracting a first portion of information for the respective channel from the received base band signal, and quantizing the first portion of information to supply the quantized first portion of information to the time division multiplex means;
• a plurality of remainder signal generation means respectively provided for a plurality of channels of analog passband signals, each of the plurality of remainder signal generation means receiving the base band signal from the base band transformation means provided for the respective channel, and generating a second portion of the information for the respective channel based on the received base band signal;
• a time division multiplex means receiving the quantized first portions of information for the plurality of channels, and multiplexing first portions of information for the plurality of channels to generate a multiplexed signal;
• a data signal point generation means for receiving the multiplexed signal, and generating a data signal point signal representing a data signal point based on the multiplexed signal, wherein the generated data signal point is one of a plurality of predetermined data signal points in the vector signal space;
• a signal adder coupled to said plurality of remainder signal generation means and said data signal point generation means, for superimposing the second portion of information for the plurality of channels on the data signal point signal;
• and
• a modulation means for receiving and modulating the data signal point signal on which second portions of information are superimposed to transform the data signal point signal on which the second portions of information are superimposed, to an analog modulated signal to be transmitted to a receiver through an analog transmission line.

A receiver for receiving information carried by at least one analog signal, comprising:

• a demodulator means for receiving an analog modulated signal transmitted through an analog transmission line and demodulating the analog modulated signal to regenerate a superimposed vector base band signal;
• a decision means for receiving the regenerated superimposed vector base band signal and determining to which one of a plurality of predetermined data signal points in the vector signal space the regenerated superimposed vector base band signal corresponds, to regenerate a first vector base band signal;
• a code transformation means receiving the first vector base band signal, and transforming the first vector base band signal to a multiplexed digital signal to regenerate the multiplexed digital signal;
• a signal synthesis means;
• a vector signal subtracter means for receiving the regenerated superimposed vector base band signal and the regenerated first vector base band signal, and subtracting a plurality of vector components of the first vector base band signal from a plurality of vector components of the superimposed vector base band signal, component by component, to regenerate the respective vector components of a second base band signal, wherein the regenerated second vector base band signal is supplied to said signal synthesis means;
• a passband signal transformation means;
• the signal synthesis means receiving the regenerated second vector base band signal and the regenerated first digital signal, and synthesizing these signals to regenerate the third vector base band signal, wherein the regenerated third vector base band signal is supplied to the passband transformation means;
• and
• a passband signal transformation means receiving the regenerated third base band signal, and transforming the regenerated third base band signal to the analog signal in the form of the analog passband signal.

A receiver for receiving at least one analog signal, comprising:

• a demodulator and equalizer means for receiving and demodulating an analog modulated signal to be transmitted to a transmitter;
• a decision means for determining the data signal point included in the signal demodulated and equalized by the demodulator and equalizer means, to regenerate the data signal point signal;
• a vector signal subtracter for obtaining a difference between the signal demodulated and equalized by the demodulator and equalizer means, and the data signal point signal regenerated by the decision means;
• a code transformation means for receiving and transforming the data signal point signal regenerated by the decision means to regenerate a multiplexed signal;
• a time division demultiplex means for receiving and demultiplexing the multiplexed signal to regenerate the quantized first portions of information for a plurality of channels;
• a plurality of signal synthesis means respectively provided for the plurality of channels, each of the plurality of signal synthesis means receiving first and second portions of information for a respective channel, and regenerating a base band signal for the channel, based on the first and second portions of information for the channel, wherein each of the plurality of signal synthesis means comprises an inverse quantization means provided for each of the plurality of channels, each of the plurality of inverse quantization means receiving the quantized first portion of information for the channel, to regenerate the first portion of information for the channel;
• and
• a plurality of passband transformation means respectively provided for the plurality of channels, each of the plurality of passband transformation means receiving the base band signal for the channel, and transforming the base band signal to regenerate the analog passband signal for the channel.