Radio communication system and communication apparatus
First Claim
1. A radio communication system including a plurality of communication apparatuses which are communicably connected with each other by radio under the UWB (Ultra WideBand)-impulse radio system, said radio communication system comprising:
- a distance detecting unit which detects the distance between two communication apparatuses, of said plurality of communication apparatuses, said two communication apparatuses being to be communicably connected by radio; and
an impulse adjusting unit which adjusts the amplitude and the repetition frequency of impulses used in radio communication between the two communication apparatuses according to the distance detected by said distance detecting unit.
1 Assignment
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Accused Products
Abstract
The communication apparatus employing the non-coherent scheme is used in the UWB-impulse radio system. In order to make it possible to reliably realize long-distance communication, while observing the reference values of the average radiation power and the peak radiation power, and also to realize high-speed short-distance communication, the apparatus includes an impulse adjusting unit which adjusts, according to the distance between two communication apparatuses detected by the distance detecting unit, the amplitude and the repetition frequency of impulses used in radio communication between the two communication apparatuses.
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Citations
20 Claims
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1. A radio communication system including a plurality of communication apparatuses which are communicably connected with each other by radio under the UWB (Ultra WideBand)-impulse radio system, said radio communication system comprising:
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a distance detecting unit which detects the distance between two communication apparatuses, of said plurality of communication apparatuses, said two communication apparatuses being to be communicably connected by radio; and
an impulse adjusting unit which adjusts the amplitude and the repetition frequency of impulses used in radio communication between the two communication apparatuses according to the distance detected by said distance detecting unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A radio communication system including a plurality of communication apparatuses which are communicably connected with each other by radio under the UWB (Ultra WideBand)-impulse radio system, said radio communication system comprising:
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an electric power detecting unit which detects electric power of impulses which is sent from one of the two communication apparatuses to be connected with each other, of said plurality of communication apparatuses, and is received by the other of the two communication apparatuses;
an impulse adjusting unit which adjusts the amplitude and the repetition frequency of impulses, used in radio communication between the two communication apparatuses, according to the electric power detected by said power detecting unit. - View Dependent Claims (11, 12)
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13. A radio communication system including a plurality of communication apparatuses which are communicably connected with each other by radio under the UWB (Ultra WideBand)-impulse radio system, said radio communication system comprising:
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a minimum amplitude detecting unit which detects the minimum amplitude of impulses which can be received by one of the two communication apparatus to be communicably connected with each other by radio, of said plurality of communication apparatuses, said impulses being sent from the other of the two communication apparatuses;
an impulse adjusting unit which adjusts the amplitude and the repetition frequency of impulses used in radio communication between the two communication apparatuses according to the minimum amplitude of impulses detected by said minimum amplitude detecting unit. - View Dependent Claims (14, 15, 16, 17)
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18. A communication apparatus for use in a radio communication system in which communication is carried out under the UWB (Ultra WideBand)-impulse radio system, said apparatus comprising:
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a distance detecting unit which detects the distance from another communication apparatus with which communication is to be performed; and
an impulse adjusting unit which adjusts the amplitude and the repetition frequency of impulses used in radio communication with said another communication apparatus according to the distance detected by said distance detecting unit.
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19. A communication apparatus for use in a radio communication system in which communication is carried out under the UWB (Ultra WideBand)-impulse radio system, said apparatus comprising:
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an electric power detecting unit which detects electric power of impulses which is sent from said another communication apparatus with which communication is to be performed; and
an adjusting unit which adjusts the amplitude and the repetition frequency of impulses used in radio communication with said another communication apparatus with which communication is to be performed, according to the electric power detected by said electric power detecting unit.
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20. A communication apparatus for use in a radio communication system in which communication is carried out under the UWB (Ultra WideBand)-impulse radio system, said apparatus comprising:
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a minimum amplitude detecting unit which detects the minimum amplitude of impulses which can be received by said another communication with which communication is to be performed; and
an impulse adjusting unit which adjusts the amplitude and the repetition frequency of impulses used in radio communication with said another communication apparatus with which communication is to be performed, according to the minimum amplitude detected by said minimum amplitude detecting unit.
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Specification