Communication system, transmitting device, receiving device, and communication device

A transmitting device comprising:

• a data generating unit to generate a data item by modulating a send data item;
• an impulse generating unit to generate an impulse corresponding to the data item generated by the data generating unit;
• a transmitting channel selecting unit to allow a frequency component of the impulse generated by the impulse generating unit corresponding to one of transmitting channels to pass through while the impulse attempts to pass through the transmitting channel selecting unit;
• and
• a transmitting unit to transmit the impulse that has passed through the transmitting channel selecting unit as a signal.

A receiving device comprising:

• a receiving unit to receive a signal generated from a send data item;
• a receiving channel selecting unit to allow a frequency component of the received signal corresponding to one of receiving channels to pass through while the received signal attempts to pass through the receiving channel selecting unit;
• and
• a data restoring unit to extract an impulse from the signal that has passed through the receiving channel selecting unit so as to restore the send data item in accordance with the extracted impulse.

A communication device that performs communications, comprising:

• a data generating unit to generate a data item by modulating a send data item;
• an impulse generating unit to generate an impulse corresponding to the data item generated by the data generating unit;
• a transmitting channel selecting unit to allow a frequency component of the impulse generated by the impulse generating unit corresponding to one of transmitting channels to pass through while the impulse attempts to pass through the transmitting channel selecting unit;
• a transmitting unit to transmit the impulse that has passed through the transmitting channel selecting unit as a signal;
• a receiving unit to receive the signal transmitted from the transmitting unit;
• a receiving channel selecting unit to allow the frequency component of the received signal corresponding to said one of the transmitting channels to pass through while the received signal attempts to pass through the receiving channel selecting unit;
• and
• a data restoring unit to extract the impulse from the signal that has passed through the receiving channel selecting unit so as to restore the send data item in accordance with the extracted impulse.