Radio communication device
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Accused Products
Abstract
A radio communications device includes a transmitter, a receiver, a propagation detecting unit, and a symbol rate setting unit. The receiver has a plurality of antennas, a plurality of transmitting circuits, and a transmission signal processing circuit. The transmission signal processing circuit has a modulator, and modulates data input transmission data in modulator to output the modulated data as transmission signal to the transmitting circuits. The receiver has a plurality of antennas, a plurality of receiving circuits, and a reception signal processing circuit. The reception signal processing circuit has a demodulator, demodulates reception signals input from the receiving circuits in demodulator to generate reception data. The propagation detecting unit detects propagation state of radio waves. The symbol rate setting unit selects a symbol to be communicated from a plurality of symbol rates based on the detected propagating state and sets the selected symbol rate to the modulator and to the demodulator.
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Citations
44 Claims
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22. A radio communications device comprising:
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a transmitter comprising;
a plurality of transmission antennas for radiating radio waves based on transmission RF signals;
a plurality of transmitting circuit means for supplying the transmission RF signals to said transmission antennas, respectively, based on a plurality of transmission signals; and
transmission signal processing means having modulating means, for modulating input transmission data to generate said transmission signals by using said modulating means, and for outputting the transmission signals to said transmitting circuit means;
a receiver comprising;
a plurality of reception antennas for receiving radio waves from a transmitter and outputting reception RF signals;
a plurality of receiving circuit means for outputting reception signals based on said reception RF signals input respectively from said reception antennas; and
reception signal processing means having demodulating means, for demodulating the reception signals output respectively from said receiving circuit means by using said demodulating means, and for generating reception data;
propagation detecting means for detecting a propagating state of said radio waves; and
symbol rate setting means for selecting a symbol rate to be used from a plurality of symbol rates based on the detected propagating state, and for setting the selected symbol rate in said modulating means and said demodulating means. - View Dependent Claims (24, 26, 27, 30, 32, 34, 35, 36, 37, 38, 39, 40)
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23. A radio communications device comprising:
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a transmitter comprising;
a plurality of transmission antennas for radiating radio waves based on transmission RF signals;
a plurality of transmitting circuit means for supplying the transmission RF signals to said transmission antennas, respectively, based on a plurality of transmission signals; and
transmission signal processing means having a plurality of modulating means having respective different symbol rates, for modulating input transmission data to generate said transmission signals by using a selected one of said modulating means, and for outputting the transmission signals to said transmitting circuit means;
a receiver comprising;
a plurality of reception antennas for receiving the radio waves from a transmitter and outputting reception RF signals;
a plurality of receiving circuit means for outputting reception signals based on said reception RF signals input respectively from said reception antennas; and
reception signal processing means having a plurality of demodulating means having respective different symbol rates, for demodulating the reception signals input respectively from said receiving circuit means by using a selected one of said demodulating means, and for generating reception data;
propagation detecting means for detecting a propagating state of said radio waves; and
modulating means/demodulating means selecting means for selecting one of said modulating means and one of said demodulating means based on the detected propagating state. - View Dependent Claims (25, 28, 29, 31, 33)
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41. A radio transmitter comprising:
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a plurality of transmission antennas for radiating radio waves based on transmission RF signals;
a plurality of transmitting circuit means for supplying the transmission RF signals to said transmission antennas, respectively, based on a plurality of transmission signals;
transmission signal processing means having modulating means, for modulating input transmission data to generate said transmission signals by using said modulating means, and for outputting the transmission signals to said transmitting circuit means; and
symbol rate setting means for selecting a symbol rate to be used from a plurality of symbol rates based on a detected propagating state of said radio waves, and for setting the selected symbol rate in said modulating means.
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42. A radio receiver comprising:
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a plurality of reception antennas for receiving radio waves from a transmitter and outputting reception RF signals;
a plurality of receiving circuit means for outputting reception signals based on said reception RF signals input respectively from said reception antennas;
reception signal processing means having demodulating means, for demodulating the reception signals output respectively from said receiving circuit means by using said demodulating means, and for generating reception data; and
symbol rate setting means for selecting a symbol rate to be used from a plurality of symbol rates based on a detected propagating state of said radio waves, and for setting the selected symbol rate in said demodulating means.
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43. A radio transmitter comprising:
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a plurality of transmission antennas for radiating radio waves based on transmission RF signals;
a plurality of transmitting circuit means for supplying the transmission RF signals to said transmission antennas, respectively, based on a plurality of transmission signals;
transmission signal processing means having a plurality of modulating means having respective different symbol rates, for modulating input transmission data to generate said transmission signals by using a selected one of said modulating means, and for outputting the transmission signals to said transmitting circuit means; and
modulating means selecting means for selecting one of said modulating means to be used based on a detected propagating state of said radio waves.
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44. A radio receiver comprising:
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a plurality of reception antennas for receiving radio waves and outputting reception RF signals;
a plurality of receiving circuit means for outputting reception signals based on said reception RF signals input respectively from said reception antennas; and
reception signal processing means having a plurality of demodulating means having respective different symbol rates, for demodulating the reception signals input respectively from said receiving circuit means by using a selected one of said demodulating means, and for generating reception data; and
demodulating means selecting means for selecting one of said demodulating means to be used based on a detected propagating state of said radio waves.
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Specification