Bidirectional wireless communication system, wireless communication apparatus, and bidirectional wireless communication method
First Claim
1. A bidirectional wireless communication system comprising:
- a first wireless communication apparatus configured to multiplex a modulated signal obtained by modulating an input signal by a reference carrier signal having a predetermined carrier frequency, and wirelessly transmit a resultant transmission signal; and
a second wireless communication apparatus, including;
a reception section configured to receive the transmission signal wirelessly transmitted by the first wireless communication apparatus and produce therefrom a reception signal,a first oscillator configured to produce a signal having a free-running oscillation frequency upon which reception processing is based, where the reception signal is injected into the first oscillator,a control unit configured to vary the free-running oscillation frequency of the first oscillator, anda frequency locking detection unit configured to detect whether the free-running oscillation frequency of the signal of the first oscillator is in a frequency range in which injection locking with the carrier frequency of the reception signal will occur such that frequency-locking with the carrier frequency of the reception signal results;
wherein, when the frequency locking detection unit detects that the free-running oscillation frequency of the signal of the first oscillator is in a frequency range in which injection locking with the carrier frequency of the reception signal will occur such that frequency-locking with the carrier frequency of the reception signal results, the second wireless communication apparatus transmits a communication enable signal to the first wireless communication apparatus.
1 Assignment
0 Petitions
Accused Products
Abstract
A bidirectional wireless communication system includes: a first wireless communication apparatus for bidirectional communication configured to multiplex a modulated signal obtained by modulating an input signal by a reference carrier signal having a predetermined carrier frequency, and transmit a resultant transmission signal; and a second wireless communication apparatus, having an oscillator configured to oscillate a signal having a free-running oscillation frequency, configured to inject a reception signal received from the first wireless communication apparatus into the oscillator, receive the reception signal while variably controlling the free-running oscillation frequency of the oscillator of the second wireless communication apparatus, detect whether the free-running oscillation frequency of the signal of the oscillator of the second wireless communication apparatus has entered the frequency range up to the injection locking to be frequency-locked with a carrier frequency of the injected reception signal, and generate a communication enable signal.
-
Citations
16 Claims
-
1. A bidirectional wireless communication system comprising:
-
a first wireless communication apparatus configured to multiplex a modulated signal obtained by modulating an input signal by a reference carrier signal having a predetermined carrier frequency, and wirelessly transmit a resultant transmission signal; and a second wireless communication apparatus, including; a reception section configured to receive the transmission signal wirelessly transmitted by the first wireless communication apparatus and produce therefrom a reception signal, a first oscillator configured to produce a signal having a free-running oscillation frequency upon which reception processing is based, where the reception signal is injected into the first oscillator, a control unit configured to vary the free-running oscillation frequency of the first oscillator, and a frequency locking detection unit configured to detect whether the free-running oscillation frequency of the signal of the first oscillator is in a frequency range in which injection locking with the carrier frequency of the reception signal will occur such that frequency-locking with the carrier frequency of the reception signal results; wherein, when the frequency locking detection unit detects that the free-running oscillation frequency of the signal of the first oscillator is in a frequency range in which injection locking with the carrier frequency of the reception signal will occur such that frequency-locking with the carrier frequency of the reception signal results, the second wireless communication apparatus transmits a communication enable signal to the first wireless communication apparatus. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A bidirectional wireless communication system comprising:
-
a first wireless communication apparatus configured to multiplex a modulated signal obtained by modulating an input signal by a reference carrier signal having a predetermined carrier frequency, and wirelessly transmit a resultant transmission signal, the first wireless communication apparatus including; a first oscillator configured to produce the reference carrier signal having a frequency upon which transmission processing is based, and a control unit configured to vary the frequency of the first oscillator; and a second wireless communication apparatus, including; a reception section configured to receive the transmission signal wirelessly transmitted by the first wireless communication apparatus and produce therefrom a reception signal, a second oscillator configured to produce a signal having a free-running oscillation frequency upon which reception processing is based, where the reception signal is injected into the second oscillator, and a frequency locking detection unit configured to detect whether the free-running oscillation frequency of the signal of the second oscillator is in a frequency range in which injection locking with the carrier frequency of the reception signal will occur such that frequency-locking with the carrier frequency of the reception signal results, wherein, when the frequency locking detection unit detects that the free-running oscillation frequency of the signal of the second oscillator is in a frequency range in which injection locking with the carrier frequency of the reception signal will occur such that frequency-locking with the carrier frequency of the reception signal results, the second wireless communication apparatus transmits a communication enable signal to the first wireless communication apparatus. - View Dependent Claims (8)
-
-
9. A wireless communication apparatus executing wireless communication with another wireless communication apparatus on the transmission side that multiplexes a modulated signal obtained by modulating an input signal by a reference carrier signal having a predetermined carrier frequency, transmits a resultant transmission signal, and receives at least a communication enable signal, comprising:
-
a reception section configured to receive the transmission signal and produce therefrom a reception signal; a first oscillator configured to produce a signal having a free-running oscillation frequency upon which reception processing is based, where the reception signal is injected into the first oscillator; a control unit configured to vary the free-running oscillation frequency of the first oscillator; and a frequency locking detection unit configured to detect whether the free-running oscillation frequency of the signal of the first oscillator is in a frequency range in which injection locking with the carrier frequency of the reception signal will occur such that frequency-locking with the carrier frequency of the reception signal results, wherein, when the frequency locking detection unit detects that the free-running oscillation frequency of the signal of the first oscillator is in a frequency range in which injection locking with the carrier frequency of the reception signal will occur such that frequency-locking with the carrier frequency of the reception signal results, the second wireless communication apparatus transmits a communication enable signal.
-
-
10. A wireless communication apparatus executing wireless communication with another wireless communication apparatus on the transmission side that transmits a transmission signal resulting from multiplexing a modulated signal obtained by modulating an input signal by a reference carrier signal having a predetermined carrier frequency while variably controlling the carrier frequency of said reference carrier signal and receives at least a communication enable signal, comprising:
-
a reception section configured to receive the transmission signal and produce therefrom a reception signal; a first oscillator configured to produce a signal having a free-running oscillation frequency upon which reception processing is based, where the reception signal is injected into the first oscillator; and a frequency locking detection unit configured to detect whether the free-running oscillation frequency of the signal of the first oscillator is in a frequency range in which injection locking with the carrier frequency of the reception signal will occur such that frequency-locking with the carrier frequency of the reception signal results, wherein, when the frequency locking detection unit detects that the free-running oscillation frequency of the signal of the first oscillator is in a frequency range in which injection locking with the carrier frequency of the reception signal will occur such that frequency-locking with the carrier frequency of the reception signal results, the second wireless communication apparatus transmits a communication enable signal.
-
-
11. A bidirectional wireless communication method comprising:
-
causing a first wireless communication apparatus to multiplex a modulated signal obtained by modulating an input signal by a reference carrier signal having a predetermined carrier frequency, and to wirelessly transmit a resultant transmission signal; causing a second wireless communication apparatus to receive the transmission signal wirelessly transmitted by the first wireless communication apparatus and produce therefrom a reception signal; causing a first oscillator in the second wireless communication apparatus to produce a signal having a free-running oscillation frequency upon which reception processing is based; injecting the reception signal into the first oscillator; varying the free-running oscillation frequency of the first oscillator; detecting whether the free-running oscillation frequency of the signal of the first oscillator is in a frequency range in which injection locking with the carrier frequency of the reception signal will occur such that frequency-locking with the carrier frequency of the reception signal results; and when the free-running oscillation frequency of the signal of the first oscillator is in a frequency range in which injection locking with the carrier frequency of the reception signal will occur such that frequency-locking with the carrier frequency of the reception signal results, causing the second wireless communication apparatus to transmit a communication enable signal to the first wireless communication apparatus.
-
-
12. A bidirectional wireless communication method comprising:
-
causing a first wireless communication apparatus to multiplex a modulated signal obtained by modulating an input signal by a reference carrier signal having a predetermined carrier frequency, and to wirelessly transmit a resultant transmission signal; causing a first oscillator in a first wireless communication apparatus to produce the reference carrier signal having a frequency upon which transmission processing is based; varying the frequency of the first oscillator; causing a second wireless communication apparatus to receive the transmission signal wirelessly transmitted by the first wireless communication apparatus and produce therefrom a reception signal; causing a second oscillator in the second wireless communication apparatus to produce a signal having a free-running oscillation frequency upon which reception processing is based; injecting the reception signal into the second oscillator; detecting whether the free-running oscillation frequency of the signal of the second oscillator is in a frequency range in which injection locking with the carrier frequency of the reception signal will occur such that frequency-locking with the carrier frequency of the reception signal results; and when the free-running oscillation frequency of the signal of the second oscillator is in a frequency range in which injection locking with the carrier frequency of the reception signal will occur such that frequency-locking with the carrier frequency of the reception signal results, causing the second wireless communication apparatus to transmit a communication enable signal to the first wireless communication apparatus.
-
-
13. A bidirectional wireless communication system comprising:
-
a first wireless communication apparatus configured to multiplex a modulated signal obtained by modulating an input signal by a reference carrier signal having a predetermined carrier frequency, and wirelessly transmit a resultant transmission signal; and a second wireless communication apparatus, including; reception means for receiving the transmission signal wirelessly transmitted by the first wireless communication apparatus and producing therefrom a reception signal, first oscillation means for producing a signal having a free-running oscillation frequency upon which reception processing is based, where the reception signal is injected into the first oscillation means, control means for varying the free-running oscillation frequency of the first oscillation means, and frequency locking detection means for detecting whether the free-running oscillation frequency of the signal of the first oscillation means is in a frequency range in which injection locking with the carrier frequency of the reception signal will occur such that frequency-locking with the carrier frequency of the reception signal results; wherein, when the frequency locking detection means detects that the free-running oscillation frequency of the signal of the first oscillation means is in a frequency range in which injection locking with the carrier frequency of the reception signal will occur such that frequency-locking with the carrier frequency of the reception signal results, the second wireless communication apparatus transmits a communication enable signal to the first wireless communication apparatus.
-
-
14. A bidirectional wireless communication system comprising:
-
a first wireless communication apparatus configured to multiplex a modulated signal obtained by modulating an input signal by a reference carrier signal having a predetermined carrier frequency, and wirelessly transmit a resultant transmission signal, the first wireless communication apparatus including; first oscillation means for producing a reference carrier signal having a frequency upon which transmission processing is based, and control means for varying the frequency of the first oscillation means; and a second wireless communication apparatus, including; reception means for receiving the transmission signal wirelessly transmitted by the first wireless communication apparatus and producing therefrom a reception signal, second oscillation means for producing a signal having a free-running oscillation frequency upon which reception processing is based, where the reception signal is injected into the second oscillation means, and frequency locking detection means for detecting whether the free-running oscillation frequency of the signal of the second oscillation means is in a frequency range in which injection locking with the carrier frequency of the reception signal will occur such that frequency-locking with the carrier frequency of the reception signal results; wherein, when the frequency locking detection means detects that the free-running oscillation frequency of the signal of the second oscillation means is in a frequency range in which injection locking with the carrier frequency of the reception signal will occur such that frequency-locking with the carrier frequency of the reception signal results, the second wireless communication apparatus transmits a communication enable signal to the first wireless communication apparatus.
-
-
15. A wireless communication apparatus executing wireless communication with another wireless communication apparatus on the transmission side that multiplexes a modulated signal obtained by modulating an input signal by a reference carrier signal having a predetermined carrier frequency, transmits a resultant transmission signal, and receives at least a communication enable signal, comprising:
-
reception means for receiving the transmission signal and producing therefrom a reception signal, first oscillation means for producing a signal having a free-running oscillation frequency upon which reception processing is based, where the reception signal is injected into the first oscillation means, control means for varying the free-running oscillation frequency of the first oscillation means, and frequency locking detection means for detecting whether the free-running oscillation frequency of the signal of the first oscillation means is in a frequency range in which injection locking with the carrier frequency of the reception signal will occur such that frequency-locking with the carrier frequency of the reception signal results; wherein, when the frequency locking detection means detects that the free-running oscillation frequency of the signal of the first oscillation means is in a frequency range in which injection locking with the carrier frequency of the reception signal will occur such that frequency-locking with the carrier frequency of the reception signal results, the wireless communication apparatus transmits a communication enable signal.
-
-
16. A wireless communication apparatus executing wireless communication with another wireless communication apparatus on the transmission side that transmits a transmission signal resulting from multiplexing a modulated signal obtained by modulating an input signal by a reference carrier signal having a predetermined carrier frequency while variably controlling the carrier frequency of said reference carrier signal and receives at least a communication enable signal, comprising:
-
reception means for receiving the transmission signal and producing therefrom a reception signal; first oscillation means for producing a signal having a free-running oscillation frequency upon which reception processing is based, where the reception signal is injected into the first oscillation means; and frequency locking detection means for detecting whether the free-running oscillation frequency of the signal of the first oscillation means is in a frequency range in which injection locking with the carrier frequency of the reception signal will occur such that frequency-locking with the carrier frequency of the reception signal results; wherein, when the frequency locking detection means detects that the free-running oscillation frequency of the signal of the first oscillation means is in a frequency range in which injection locking with the carrier frequency of the reception signal will occur such that frequency-locking with the carrier frequency of the reception signal results, the wireless communication apparatus transmits a communication enable signal.
-
Specification