COMMUNICATION APPARATUS, INTEGRATED CIRCUIT, AND COMMUNICATION METHOD
First Claim
1. A power-line communication apparatus, which belongs to a first communication system, for transmitting a multi-carrier signal including a plurality of sub-carriers through a power line, comprising:
- a phase rotation section configured to rotate phase of at least one sub-carrier among the plurality of sub-carriers, by use of a first phase vector corresponding to the first communication system;
a multi-carrier signal output section configured to output a first multi-carrier signal in which phase of at least one sub-carrier is rotated with the first phase vector within a first time slot corresponding to the first communication system;
a band setting section configured to set up at least one of a time band and a frequency band on the basis of the first multi-carrier signal;
a communication section configured to perform communication through the power line, by use of at least one of the time band and the frequency band, which are set up by the band setting section.
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Accused Products
Abstract
A communication apparatus repeatedly outputs a first multi-carrier signal SS during predetermined periods T1, T2, T3, . . . , and outputs a second multi-carrier signal RS whose phase vector is different from that of the first multi-carrier signal SS, at a predetermined timing based on the first multi-carrier signal SS. The communication apparatus further detects the second multi-carrier signal RS output from another communication apparatus, which uses a different communication method from the communication apparatus. Accordingly, both communication apparatuses can differentiate the first multi-carrier signal SS from the second multi-carrier signal RS without performing relatively cumbersome modulation and other processes.
5 Citations
11 Claims
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1. A power-line communication apparatus, which belongs to a first communication system, for transmitting a multi-carrier signal including a plurality of sub-carriers through a power line, comprising:
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a phase rotation section configured to rotate phase of at least one sub-carrier among the plurality of sub-carriers, by use of a first phase vector corresponding to the first communication system; a multi-carrier signal output section configured to output a first multi-carrier signal in which phase of at least one sub-carrier is rotated with the first phase vector within a first time slot corresponding to the first communication system; a band setting section configured to set up at least one of a time band and a frequency band on the basis of the first multi-carrier signal; a communication section configured to perform communication through the power line, by use of at least one of the time band and the frequency band, which are set up by the band setting section. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An integrated circuit device, which belongs to a first communication system, for transmitting a multi-carrier signal including a plurality of sub-carriers through a power line, comprising:
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a phase rotation section configured to rotate phase of at least one sub-carrier among the plurality of sub-carriers, by use of a first phase vector corresponding to the first communication system; a multi-carrier signal output section configured to output a first multi-carrier signal in which phase of at least one sub-carrier is rotated with the first phase vector within a first time slot corresponding to the first communication system; a band setting section configured to set up at least one of a time band and a frequency band on the basis of the first multi-carrier signal; a communication section configured to perform communication through the power line, by use of at least one of the time band and the frequency band, which are set up by the band setting section. - View Dependent Claims (9)
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10. A communication method, which employs a first communication system, for transmitting a multi-carrier signal including a plurality of sub-carriers through a power line, comprising:
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rotating phase of at least one sub-carrier among the plurality of sub-carriers, by use of a first phase vector corresponding to the first communication system; outputting a first multi-carrier signal in which phase of at least one sub-carrier is rotated with the first phase vector within a first time slot corresponding to the first communication system; setting up at least one of a time band and a frequency band on the basis of the first multi-carrier signal; performing communication through the power line, by use of at least one of the time band and the frequency band. - View Dependent Claims (11)
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Specification