Ultra wideband radio transmitter, ultra wideband radio receiver, and ultra wideband radio communication method

An ultra wideband radio receiver comprising:

• an antenna for receiving a radio wave signal;
• a local oscillator for outputting a local signal for frequency-converting the radio wave signal;
• a mixer for receiving the radio wave signal and the local signal, and frequency-converting the radio wave signal;
• a first matched filter for receiving the frequency-converted radio wave signal, and outputting a first output signal when a reference signal that becomes a data decision criterion is detected therefrom;
• a second matched filter for receiving the frequency-converted radio wave signal, and outputting a second output signal when a data signal is detected therefrom;
• a delay time measurer for detecting which of the first output signal and the second output signal has been first output from the first and second matched filters, and outputting a corresponding detection result;
• and
• a data decider for receiving the detection result and deciding whether the data signal has a first level or a second level out of 2 logical levels.

An ultra wideband radio transmitter including a first radio section for performing data communication using a first frequency, a second radio section for performing data communication using a second frequency being different from the first frequency, and an interface section for allocating transmission data to the first and second radio sections, comprising:

• the first radio section including;
• a first delay time controller for generating a periodic pulse by receiving transmission data allocated by the interface, inputting the periodic pulse to a first matched filter, outputting the periodic pulse to a second matched filter when the transmission data has a first level out of 2 logical levels, and outputting the periodic pulse to a third matched filter when the transmission data has a second level out of the 2 logical levels;
• the first matched filter for outputting a reference signal that becomes a data decision criterion when the periodic pulse is input thereto;
• the second matched filter for outputting a first data signal a predetermined time ahead of the reference signal when the periodic signal is input thereto;
• the third matched filter for outputting a second data signal a predetermined time behind the reference signal when the periodic pulse is input thereto;
• a first adder for adding up outputs of the first to third matched filters;
• and
• a first antenna for receiving a corresponding addition signal and radiating the addition signal in the air;
• and
• the second radio section including;
• a second delay time controller for generating a periodic pulse by receiving transmission data allocated by the interface, inputting the periodic pulse to a third matched filter, outputting the periodic pulse to a fourth matched filter when the transmission data has a first level out of 2 logical levels, and outputting the periodic pulse to a fifth matched filter when the transmission data has a second level out of the 2 logical levels;
• the third matched filter for outputting a reference signal that becomes a data decision criterion when the periodic pulse is input thereto;
• the fourth matched filter for outputting a first data signal a predetermined time ahead of the reference signal when the periodic signal is input thereto;
• the fifth matched filter for outputting a second data signal a predetermined time behind the reference signal when the periodic pulse is input thereto;
• a second adder for adding up outputs of the third to fifth matched filters;
• a local oscillator for outputting a local signal for frequency-converting a corresponding addition signal from the first frequency to the second frequency;
• a mixer for receiving the addition signal and the local signal, and frequency-converting the addition signal;
• and
• an antenna for receiving the frequency-converted addition signal and radiating the corresponding signal in the air.

An ultra wideband radio receiver including a first radio section for performing data communication using a first frequency and a second radio section for performing data communication using a second frequency being different from the first frequency, comprising:

• a first antenna for receiving a radio wave signal and outputting the received radio wave signal to a first matched filter and a second matched filter;
• the first matched filter for receiving a signal from the first antenna, and outputting a first output signal when a reference signal that becomes a data decision criterion is detected therefrom;
• the second matched filter for receiving a signal from the first antenna, and outputting a second output signal when a data signal is detected therefrom;
• a first delay time measurer for detecting which of the first output signal and the second output signal has been first output from the first and second matched filters, and outputting a corresponding detecting result;
• and
• a first data decider for receiving the detection result, and deciding whether the data signal has a first level or a second level out of 2 logical levels;
• and
• the second radio section including;
• a second antenna for receiving a radio wave signal;
• a local oscillator for outputting a local signal for frequency-converting the radio wave signal;
• a mixer for receiving the radio wave signal and the local signal, and frequency-converting the radio wave signal;
• a third matched filter for receiving the frequency-converted radio wave signal, and outputting the first output signal when a reference signal that becomes a data decision criterion is detected therefrom;
• a fourth matched filter for receiving the frequency-converted radio wave signal, and outputting the second output signal when a data signal is detected therefrom;
• a second delay time measurer for detecting which of the first output signal and the second output signal has first been output from the third and fourth matched filters, and outputting a corresponding detection result;
• and
• a second data decider for receiving the detecting result, and deciding whether the data signal has a first level or a second level out of 2 logical levels.

An ultra wideband radio transmitter including a first radio section for performing data communication using a first frequency, a second radio section for performing data communication using a second frequency being different from the first frequency, and an interface for allocating transmission data to the first and second radio sections, comprising:

• the first radio section including;
• a first delay time controller for generating a periodic pulse by receiving transmission data allocated by the interface, inputting the periodic pulse to a first matched filter, outputting the periodic pulse to a second matched filter when the transmission data has a first level out of 2 logical levels, and outputting the periodic pulse to a third matched filter when the transmission data has a second level of the 2 logical levels;
• the first matched filter for outputting a reference signal that becomes a data decision criterion when the periodic pulse is input thereto;
• the second matched filter for outputting a first data signal a predetermined time ahead of the reference signal when the periodic pulse is input thereto;
• the third matched filter for outputting a second data signal a predetermined time behind the reference signal when the periodic pulse is input thereto;
• a first adder for adding up outputs of the first to third matched filters;
• and
• a first antenna for receiving a corresponding addition signal, and radiating the addition signal in the air;
• and
• the second radio section including;
• a second delay time controller for generating a periodic pulse by receiving transmission data allocated by the interface, inputting the periodic pulse to a third matched filter, outputting the periodic pulse to a fourth matched filter when the transmission data has a first level out of 2 logical levels, and outputting the periodic pulse to a fifth matched filter when the transmission data has a second level of the 2 logical levels;
• the third matched filter for outputting a reference signal that becomes a data decision criterion when the periodic pulse is input thereto;
• the fourth matched filter for outputting a first data signal a predetermined time ahead of the reference signal when the periodic pulse is input thereto;
• the fifth matched filter for outputting a second data signal a predetermined time behind the reference signal when the periodic pulse is input thereto;
• a second adder for adding up outputs of the third to fifth matched filters;
• a local oscillator for outputting a local signal for frequency-converting a corresponding addition signal from the first frequency to the second frequency;
• and
• a mixer for receiving the addition signal and the local signal, frequency-converting the addition signal, and outputting the frequency-converted addition signal to the first antenna.

An ultra wideband radio receiver including a first radio section for performing data communication using a first frequency and a second radio section for performing data communication using a second frequency being different from the first frequency, comprising:

• a first antenna for receiving a radio wave signal and outputting the received radio wave signal to a first matched filter, a second matched filter, and a mixer in the second radio section;
• the first matched filter for receiving a signal from the first antenna, and outputting a first output signal when a reference signal that becomes a data decision criterion is detected therefrom;
• the second matched filter for receiving a signal from the first antenna, and outputting a second output signal when a data signal is detected therefrom;
• a first delay time measurer for detecting which of the first output signal and the second output signal has been first output from the first and second matched filters, and outputting a corresponding detecting result;
• and
• a first data decider for receiving the detection result, and deciding whether the data signal has a first level or a second level out of 2 logical levels;
• and
• the second radio section including;
• a local oscillator for outputting a local signal for frequency-converting a radio wave signal received from the first antenna;
• a mixer for receiving the radio wave signal from the first antenna and the local signal, and frequency-converting the radio wave signal;
• a third matched filter for receiving the frequency-converted radio wave signal, and outputting the first output signal when a reference signal that becomes a data decision criterion is detected therefrom;
• a fourth matched filter for receiving the frequency-converted radio wave signal, and outputting the second output signal when a data signal is detected therefrom;
• a second delay time measurer for detecting which of the first output signal and the second output signal has first been output from the third and fourth matched filters, and outputting a corresponding detection result;
• and
• a second data decider for receiving the detecting result, and deciding whether the data signal has a first level or a second level out of 2 logical levels.

An ultra wideband radio communication method characterized in that

• in an ultra wideband radio transmitter,
• a delay time controller generates a periodic pulse, inputs the periodic pulse to a first matched filter, outputs the periodic pulse to a second matched filter when transmission data has a first level out of 2 logical levels, and outputs the periodic pulse to a third matched filter when the transmission data has a second level out of 2 logical levels;
• the first matched filter outputs a reference signal that becomes a data decision criterion when the periodic pulse is input thereto;
• the second matched filter outputs a first data signal a predetermined time ahead of the reference signal when the periodic pulse is input thereto;
• the third matched filter outputs a second data signal a predetermined time behind the reference signal when the periodic pulse is input thereto;
• an adder adds up outputs of the first to third matched filters;
• a local oscillator outputs a local signal for frequency-converting a corresponding addition signal at a high frequency band or a low frequency band;
• a mixer receives the addition signal and the local signal, and frequency-converts the addition signal;
• and
• an antenna receives the frequency-converted addition signal, and radiates the corresponding signal in the air;
• and
• in an ultra wideband radio receiver,
• an antenna receives the addition signal and outputs the corresponding signal to a mixer;
• the mixer receives the addition signal and a local signal that a local oscillator outputs to frequency-convert the addition signal, and frequency-converts the addition signal;
• a fourth matched filter receives the frequency-converted radio wave signal, and outputs a first output signal when a reference signal that becomes a data decision criterion is detected therefrom;
• a fifth matched filter receives the frequency-converted radio wave signal, and outputs a second output signal when a data signal is detected therefrom;
• a delay time measurer detects which of the first output signal and the second output signal has been first output from the fourth and fifth matched filters, and outputs a corresponding detection result;
• and
• a data decider receives the detection result, and decides whether the data signal has a first level or a second level out of 2 logical levels.