1. A visible ray communication system comprising:
a transmission apparatus including:
a first processor for receiving N carrier signals and a control signal, and for allocating the N carrier signals to a plurality of light emitting diodes based on the control signal, adding carrier signals allocated to same light emitting diodes, and generating a transmission signal for each of the plurality of light emitting diodes; and
a reception apparatus including:
a second processor for Fast Fourier Transform (FFT) processing reception signals output from a plurality of light receiving diodes based on N sinusoidal wave signals having respectively orthogonal carrier frequencies to extract N modulation signals,
wherein the N carrier signals are generated by multiplying the N modulation signals by respective N sinusoidal wave signals having the respectively orthogonal carrier frequencies, and wherein a relationship between a carrier signal and each of the plurality of light emitting diodes is based on the control signal.
2. The visible ray communication system as claimed in claim 1, wherein the first processor comprises:
N switches, each including an input port to which a respective carrier signal is input and a plurality of output ports corresponding to the plurality of light emitting diodes, respectively, for switching an output destination of each of the carrier signals input to the input port to any of the output ports;
a switch controller for controlling each of the N switches based on the control signal and controlling the output destination of the carrier signals input to each of the N switches; and
a plurality of adders each for adding carrier signals output from the output ports each corresponding to a respective one of the light emitting diodes for the N switches, the plurality of adders being same in number as the plurality of light emitting diodes.
3. The visible ray communication system as claimed in claim 1, wherein the first processor allocates carrier signals such that a same carrier signal is not allocated for different colors.
4. The visible ray communication system as claimed in claim 1, wherein the reception apparatus further comprises:
a signal determination unit for determining if each of the N carrier signals is included in the reception signals of each color; and
a combination detection unit for detecting combinations of each of the colors and carrier signals based on a determination result in the signal determination unit and restoring the control signal from a corresponding combination.
5. The visible ray communication system as claimed in claim 1, wherein the transmission apparatus further comprises:
a serial-to-parallel convertor for serial-to-parallel converting serial transmission data into N parallel data signals and the control signal; and
a modulator for generating the N modulation signals by respectively modulating the N parallel data signals output from the serial-to-parallel convertor.
6. The visible ray communication system as claimed in claim 5, wherein the reception apparatus further comprises:
a demodulator for demodulating the N modulation signals extracted to restore the N parallel data signals; and
a parallel-to-serial convertor for parallel-to-serial converting the N parallel data signals and the control signal to restore the transmission data.
7. A method for transmitting a signal in a visible ray communication system, comprising:
generating, by a transmitter, N carrier signals by respectively multiplying N modulation signals by N sine wave signals each having an orthogonal carrier frequency relative to the other sine wave signals;
allocating, by the transmitter, the N carrier signals to a plurality of light emitting diodes based on a control signal;
receiving, by a receiver including a plurality of light reception diodes, emitted light of different colors; and
Fast Fourier Transform (FFT) processing, by the receiver, reception signals output from each of the plurality of light receiving diodes based on the N sine wave signals having respectively orthogonal carrier frequencies to extract the N modulation signals,
wherein the N carrier signals are generated by multiplying the N modulation signals by respective N sinusoidal wave signals having the respectively orthogonal carrier frequencies, and
wherein a relationship between a carrier signal and each of the plurality of light emitting diodes is based on the control signal.
8. The method as claimed in claim 7, wherein allocating the N carrier signals to the plurality of light emitting diodes comprises:
respectively switching an output destination of each of respective carrier signals input to an input port to any of output ports, with N switches each including the input port to which each carrier signal is input and a plurality of the output ports respectively correspond to the plurality of light emitting diodes;
controlling each of the N switches based on the control signal and controlling the output destination of the carrier signals input to each of the N switches; and
adding carrier signals output from the output ports each corresponding to a respective one of the plurality of light emitting diodes for the N switches.
9. The method as claimed in claim 7, wherein allocating the N carrier signals to the plurality of light emitting diodes comprises:
allocating carrier signals such that a same carrier signal is not allocated for different colors.
10. The method as claimed in claim 7, further comprising:
determining if each of the N carrier signals is included in the reception signals of each color; and
detecting combinations of each of the colors and carrier signals based on a determination result and restoring the control signal from a corresponding combination.
11. The method as claimed in claim 7, further comprising:
serial-to-parallel converting, by a transmitter including the plurality of light emitting diodes, serial transmission data into N parallel data signals and the control signal; and
modulating, by the transmitter, the N parallel data signals to generate the N modulation signals.
12. The method as claimed in claim 11, further comprising:
adding, by the transmitter, carrier signals allocated to a same light emitting diode;
generating, by the transmitter, a transmission signal for each of the plurality of light emitting diodes; and
controlling, by the transmitter, each of the plurality of light emitting diodes to emit light in a light emitting strength according to a respective transmission signal amplitude.
13. The method as claimed in claim 12, further comprising:
detecting, by the receiver, a relationship between each of the N carrier signals and the plurality of light emitting diodes of each color based on the N modulation signals;
restoring, by the receiver, the control signal based on the detected relationship; and
parallel-to-serial converting, by the receiver, the N parallel data signals and the control signal to restore the serial transmission data.
14. The method as claimed in claim 11, wherein detecting the relationship between each of the N carrier signals and the plurality of light emitting diodes of each color comprises:
determining if each of the N carrier signals is included in the reception signals of each color; and
detecting combinations of each of the colors and the N carrier signals based on a determination result and restoring the control signal from a corresponding combination.
15. A transmission apparatus in a visible ray communication system, comprising:
a serial-to-parallel converter for serial-to-parallel converting serial transmission data into N parallel data signals and a control signal;
a modulator for generating N modulation signals by respectively modulating the N parallel data signals output from the serial-to-parallel converter; and
a processor for receiving N carrier signals and the control signal, and for allocating the N carrier signals to a plurality of light emitting diodes based on the control signal,
wherein the N carrier signals are generated by multiplying N modulation signals by respective N sinusoidal wave signals having respectively orthogonal carrier frequencies.
16. The transmission apparatus as claimed in claim 15, wherein the processor comprises:
N switches, each including an input port to which a respective carrier signal is input and a plurality of output ports corresponding to the plurality of light emitting diodes, respectively, for switching an output destination of each of the carrier signals input to the input port to any of the output ports;
a switch controller for controlling each of the N switches based on the control signal and controlling the output destination of the carrier signals input to each of the N switches; and
a plurality of adders each for adding carrier signals output from the output ports each corresponding to a respective one of the plurality of light emitting diodes for the N switches, with the plurality of adders being same in number as the plurality of light emitting diodes.
17. The transmission apparatus as claimed in claim 15, wherein the processor is further configured to allocate carrier signals such that a same carrier signal is not allocated for different colors.
18. A method for transmitting a signal by a transmitting apparatus in a visible ray communication system, comprising:
serial-to-parallel converting serial transmission data into N parallel data signals and a control signal;
modulating the N parallel data signals to generate N modulation signals;
generating N carrier signals by multiplying the N modulation signals by respective N sinusoidal wave signals having carrier frequencies respectively orthogonal to each other; and
allocating the N carrier signals to a plurality of light emitting diodes based on the control signal.
19. The method as claimed in claim 18, wherein allocating the N carrier signals to the plurality of light emitting diodes comprises:
controlling each of N switches based on the control signal and controlling an output destination of the N carrier signals input to each of the N switches;
switching the output destination of each of the carrier signals input to an input port to any of output ports, with the N switches each including the input port to which each carrier signal is input and a plurality of the output ports corresponding to the plurality of light emitting diodes, respectively; and
adding carrier signals allocated to a same light emitting diode.
20. The method as claimed in claim 18, wherein allocating the N carrier signals to the plurality of light emitting diodes comprises:
allocating carrier signals such that a same carrier signal is not allocated for different colors.
21. A reception apparatus in a visible ray communication system, comprising:
a processor for Fast Fourier Transform (FFT) processing reception signals output from a plurality of light receiving diodes based on N sinusoidal wave signals having respectively orthogonal carrier frequencies to extract N modulation signals, wherein each of the reception signals has one color;
wherein a relationship between a carrier signal and each of a plurality of light emitting diodes is based on a control signal.
22. The reception apparatus as claimed in claim 21, further comprising:
a signal determination unit for determining if each of N carrier signals is included in the reception signals of each color; and
a combination detection unit for detecting combinations of each of the colors and carrier signals based on a determination result in the signal determination unit and restoring the control signal from a corresponding combination.
23. The reception apparatus as claimed in claim 21, wherein the plurality of light receiving diodes receive light of different colors and output reception signals of each color.
24. The reception apparatus as claimed in claim 21, further comprising:
a demodulator for demodulating the N modulation signals extracted to restore N parallel data signals; and
a parallel-to-serial convertor for parallel-to-serial converting the N parallel data signals and the control signal to restore transmission data.
25. A method for receiving a signal by a reception apparatus in a visible ray communication system, comprising:
Fast Fourier Transform (FFT) processing reception signals output from each of a plurality of light receiving diodes based on N sinusoidal wave signals having respectively orthogonal carrier frequencies to extract N modulation signals,
wherein a relationship between a carrier signal and each of a plurality of light emitting diodes is based on a control signal.
26. The method as claimed in claim 25, further comprising:
demodulating the N modulation signals to restore N parallel data signals;
detecting the relationship between each of N carrier signals and each of the plurality of light emitting diodes based on the N modulation signals;
restoring the control signal based on the detected relationship; and
parallel-to-serial converting the N parallel data signals and the control signal to restore transmission data.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A transition duct support system for a transition duct that channels hot gases from a combustor exit to a gas turbine inlet of a turbine engine, comprising:
a transition duct body formed from an outer wall that forms an internal passage extending between an inlet and an outlet of the transition duct body;
wherein the transition duct body includes an outlet transition section at the outlet in which at least a portion of the outlet transition section is positioned at an oblique angle relative to the outer wall of the transition duct body;
a transition support frame formed from a body positioned around the transition duct body at the outlet transition section; and
wherein the transition support frame includes at least one inner surface aligned with and positioned proximate to portion of the outlet transition section that is positioned at an oblique angle relative to the outer wall of the transition duct body to limit linear movement of the transition duct body.
2. The transition duct support system, wherein the portion of the outlet transition section positioned at an oblique angle relative to the outer wall of the transition duct body is comprised of a first wall positioned at a first oblique angle relative to the outer wall of the transition duct body and a second wall positioned at a second oblique angle relative to the outer wall of the transition duct body, and
wherein the at least one inner surface of the transition support frame comprises a first inner surface aligned with and positioned proximate to the first wall of the transition duct body to limit movement in a first direction and a second inner surface aligned with and positioned proximate to the second wall of the transition duct body to limit movement in a second direction that is generally opposite to the first direction.
3. The transition duct support system of claim 2, wherein the first wall of the outlet transition section of the transition duct body is positioned at an oblique angle extending generally away from a longitudinal axis of a flow path of the transition duct body and the second wall of the outlet transition section of the transition duct body is positioned at an oblique angle extending generally toward the longitudinal axis of the flow path of the transition duct body.
4. The transition duct support system of claim 3, wherein the first wall is a sidewall of the outlet transition section of the transition duct body and the second wall is a radially outer wall of the outlet transition section of the transition duct body.
5. The transition duct support system of claim 4, wherein the outlet transition section of the transition duct body comprises a first sidewall formed from the first wall, a second sidewall opposite to the first sidewall, wherein the second sidewall is generally aligned with the outer wall of the transition duct body, a radially inner wall extending between the first and second sidewalls at a radially innermost region of the outlet and generally aligned with the outer wall of the transition duct body, and the radially outer wall extending between the first and second sidewalls at a radially outermost region of the outlet and generally aligned with the outer wall of the transition duct body.
6. The transition duct support system of claim 4, wherein the outlet transition section of the transition duct body comprises a first sidewall formed from the first wall, a second sidewall opposite to the first sidewall, wherein the second sidewall is positioned at an oblique angle relative to the outer wall of the transition duct body, a radially inner wall extending between the first and second sidewalls at a radially innermost region of the outlet and generally aligned with the outer wall of the transition duct body, and the radially outer wall extending between the first and second sidewalls at a radially outermost region of the outlet and generally aligned with the outer wall of the transition duct body.
7. The transition duct support system of claim 6, wherein the second sidewall extends at an oblique angle in a direction away from the first sidewall.
8. The transition duct support system of claim 1, wherein the outlet of the transition duct body extends axially downstream from the transition support frame such that the outlet of the transition duct body is positioned axially downstream from the transition support frame to provide heat shielding of downstream transition exit seals.
9. The transition duct support system of claim 1, further comprising a cooling system formed from at least one cooling channel in the transition support frame.
10. The transition duct support system of claim 9, wherein the at least one cooling channel extends axially along a radially inner surface of the transition support frame and includes at least one inlet in a radially outer surface.
11. The transition duct support system of claim 10, wherein the at least one cooling channel includes an outlet in an inner surface of the transition support frame.
12. The transition duct support system of claim 10, wherein the at least one cooling channel includes an outlet in an end surface of the transition support frame.
13. The transition duct support system of claim 9, further comprising at least one cooling channel extending along the transition duct body in the outer wall forming the transition duct body.
14. The transition duct support system of claim 13, wherein the at least one cooling channel extending along the transition duct body in the outer wall forming the transition duct body comprises a plurality of cooling channels axially aligned in the transition duct body and having outlets in an inner surface of the transition duct body aligned with orifices in the transition support frame.
15. The transition duct support system of claim 1, further comprising an outer exit rail coupled to and extending radially outwardly from a radially outer wall of the transition support frame and an inner exit rail coupled to and extending radially inwardly from a radially inner wall of the transition support frame, wherein the outer and inner exit rails are configured to support the transition support frame.
16. The transition duct support system of claim 1, wherein the portion of the outlet transition section positioned at an oblique angle is positioned at an oblique angle between 50 degrees and greater than zero degrees.
17. The transition duct support system of claim 1, further comprising at least one standoff that separates the transition support frame from the transition duct body to form at least one gap enabling cooling fluids to flow between the transition support frame and the transition duct body to cool the gas turbine inlet.
18. A transition duct support system for a transition duct that channels hot gases from a combustor exit to a gas turbine inlet of a turbine engine, comprising:
a transition duct body formed from an outer wall that forms an internal passage extending between an inlet and an outlet of the transition duct body;
wherein the transition duct body includes an outlet transition section at the outlet in which at least a portion of the outlet transition section is positioned at an oblique angle relative to the outer wall of the transition duct body;
a transition support frame formed from a body positioned around the transition duct body at the outlet transition section;
wherein the transition support frame includes at least one inner surface aligned with and positioned proximate to portion of the outlet transition section that is positioned at an oblique angle relative to the outer wall of the transition duct body to limit linear movement of the transition duct body;
wherein the portion of the outlet transition section positioned at an oblique angle relative to the outer wall of the transition duct body is comprised of a first wall positioned at a first oblique angle relative to the outer wall of the transition duct body and a second wall positioned at a second oblique angle relative to the outer wall of the transition duct body, and
wherein the at least one inner surface of the transition support frame comprises a first inner surface aligned with and positioned proximate to the first wall of the transition duct body to limit movement in a first direction and a second inner surface aligned with and positioned proximate to the second wall of the transition duct body to limit movement in a second direction that is generally opposite to the first direction.
19. The transition duct support system of claim 18, wherein the first wall of the outlet transition section of the transition duct body is positioned at an oblique angle extending generally away from a longitudinal axis of a flow path of the transition duct body and the second wall of the outlet transition section of the transition duct body is positioned at an oblique angle extending generally toward the longitudinal axis of the flow path of the transition duct body and generally radially inward, and wherein first inner surface of the transition support frame is positioned at an oblique angle extending generally away from a longitudinal axis of a flow path of the transition support frame and the second inner surface of the transition support frame is positioned at an oblique angle extending generally toward the longitudinal axis of the flow path of the transition duct body and generally radially inward.
20. The transition duct system of claim 18, further comprising a cooling system formed from a plurality of cooling channels in the transition support frame and configured to provide cooling fluids to at least one exit seal positioned downstream from the transition duct body and further comprising an outer exit rail coupled to and extending radially outwardly from a radially outer wall of the transition support frame and an inner exit rail coupled to and extending radially inwardly from a radially inner wall of the transition support frame, wherein the outer and inner exit rails are configured to support the transition support frame.