Abstract: A communication device and a communication signal generation method are provided that perform receiving input data; and processing the input data according to a determined channel to generate a communication frame. The determined channel corresponds to one of a plurality of channels including at least one first channel defined by a first mode and at least one second channel defined by a second mode. A frequency band of the first channel including subcarriers is different from a frequency band of the second channel including subcarriers. A frequency interval of the subcarriers in the first channel is different from a frequency interval of the subcarriers in the second channel. A number of the first channel(s) in the first mode is different from a number of the second channel(s) in the second mode.

Abstract: A communication device and a communication signal generation method are provided that perform receiving input data; and processing the input data according to a determined channel to generate a communication frame. The determined channel corresponds to one of a plurality of channels including at least one first channel defined by a first mode and at least one second channel defined by a second mode. A frequency band of the first channel including subcarriers is different from a frequency band of the second channel including subcarriers. A frequency interval of the subcarriers in the first channel is different from a frequency interval of the subcarriers in the second channel. A number of the first channel(s) in the first mode is different from a number of the second channel(s) in the second mode.

Abstract: A communication apparatus includes a coupler that is connected to a cable to which a first communication apparatus is connected, the first communication apparatus performing communication based on a wired communication scheme; communication circuitry that is connected to the coupler; and an antenna that is connected to the coupler, radiates a signal of the wired communication scheme to a second communication apparatus, and receives a signal of the wired communication scheme from the second communication apparatus. The coupler outputs, to the cable and the antenna, the signal of the wired communication scheme outputted from the communication circuitry, outputs, to the communication circuitry and the cable, the signal of the wired communication scheme received by the antenna, and outputs, to the communication circuitry and the antenna, the signal of the wired communication scheme received from the cable.

Abstract: A communication device and a communication signal generation method are provided that perform receiving input data; and processing the input data according to a determined channel to generate a communication frame. The determined channel corresponds to one of a plurality of channels including at least one first channel defined by a first mode and at least one second channel defined by a second mode. A frequency band of the first channel including subcarriers is different from a frequency band of the second channel including subcarriers. A frequency interval of the subcarriers in the first channel is different from a frequency interval of the subcarriers in the second channel. A number of the first channel(s) in the first mode is different from a number of the second channel(s) in the second mode.

Abstract: An encoder and decoder using LDPC-CC which avoid lowering the transmission efficiency of information while not deteriorating error correction performance, even at termination; and an encoding method of the same. A termination sequence length determining unit determines the sequence length of a termination sequence transmitted added to the end of an information sequence, according to the information length (information size) and encoding rate of the information sequence. A parity calculation unit carries out LDPC-CC coding on the information sequence and the known-information sequence necessary for generating a termination sequence of the determined termination sequence length, and calculates a parity sequence.

Abstract: A communication device and a communication signal generation method that perform, adaptively, a wired power line communication that is given desired communication characteristics being in such a level as to satisfy user demands is provided. The communication device includes a selection unit a selection unit which selects a mode that prescribes a number of one or more channels prepared in a prescribed frequency band used for a communication to be performed with another communication device via a wired medium and a channel to be used for the communication in the mode; and a signal processing unit which generates communication frames to be used for the communication by performing signal processing on input data according to the selected mode and channel.

Abstract: A communication device and a communication signal generation method that perform, adaptively, a wired power line communication that is given desired communication characteristics being in such a level as to satisfy user demands is provided. The communication device includes a selection unit a selection unit which selects a mode that prescribes a number of one or more channels prepared in a prescribed frequency band used for a communication to be performed with another communication device via a wired medium and a channel to be used for the communication in the mode; and a signal processing unit which generates communication frames to be used for the communication by performing signal processing on input data according to the selected mode and channel.

Abstract: An encoder and decoder using LDPC-CC which avoid lowering the transmission efficiency of information while not deteriorating error correction performance, even at termination; and an encoding method of the same. A termination sequence length determining unit determines the sequence length of a termination sequence transmitted added to the end of an information sequence, according to the information length (information size) and encoding rate of the information sequence. A parity calculation unit carries out LDPC-CC coding on the information sequence and the known-information sequence necessary for generating a termination sequence of the determined termination sequence length, and calculates a parity sequence.

Abstract: An encoder and decoder using LDPC-CC which avoid lowering the transmission efficiency of information while not deteriorating error correction performance, even at termination; and an encoding method of the same. A termination sequence length determining unit determines the sequence length of a termination sequence transmitted added to the end of an information sequence, according to the information length (information size) and encoding rate of the information sequence. A parity calculation unit carries out LDPC-CC coding on the information sequence and the known-information sequence necessary for generating a termination sequence of the determined termination sequence length, and calculates a parity sequence.

Abstract: An encoder and decoder using LDPC-CC which avoid lowering the transmission efficiency of information while not deteriorating error correction performance, even at termination; and an encoding method of the same. A termination sequence length determining unit determines the sequence length of a termination sequence transmitted added to the end of an information sequence, according to the information length (information size) and encoding rate of the information sequence. A parity calculation unit carries out LDPC-CC coding on the information sequence and the known-information sequence necessary for generating a termination sequence of the determined termination sequence length, and calculates a parity sequence.

Abstract: An encoder and decoder using LDPC-CC which avoid lowering the transmission efficiency of information while not deteriorating error correction performance, even at termination; and an encoding method of the same. A termination sequence length determining unit determines the sequence length of a termination sequence transmitted added to the end of an information sequence, according to the information length (information size) and encoding rate of the information sequence. A parity calculation unit carries out LDPC-CC coding on the information sequence and the known-information sequence necessary for generating a termination sequence of the determined termination sequence length, and calculates a parity sequence.

Abstract: A communication apparatus performs a communication using a communication frame corresponding to a predetermined frequency bandwidth including a first frequency bandwidth and a second frequency bandwidth. The communication frame includes a first communication channel that corresponds to the first frequency bandwidth and that has a plurality of subcarriers and a second communication channel that corresponds to the second frequency bandwidth and that has a plurality of subcarriers. The communication apparatus sets a first phase vector with respect to the first communication channel, sets a second phase vector with respect to the second communication channel, generates communication data by adjusting a phase of symbol data using the first phase vector and the second phase vector, and transmits the communication data using the communication frame.

Abstract: An encoder and decoder using LDPC-CC which avoid lowering the transmission efficiency of information while not deteriorating error correction performance, even at termination; and an encoding method of the same. A termination sequence length determining unit determines the sequence length of a termination sequence transmitted added to the end of an information sequence, according to the information length (information size) and encoding rate of the information sequence. A parity calculation unit carries out LDPC-CC coding on the information sequence and the known-information sequence necessary for generating a termination sequence of the determined termination sequence length, and calculates a parity sequence.

Abstract: An encoder and decoder using LDPC-CC which avoid lowering the transmission efficiency of information while not deteriorating error correction performance, even at termination; and an encoding method of the same. A termination sequence length determining unit determines the sequence length of a termination sequence transmitted added to the end of an information sequence, according to the information length (information size) and encoding rate of the information sequence. A parity calculation unit carries out LDPC-CC coding on the information sequence and the known-information sequence necessary for generating a termination sequence of the determined termination sequence length, and calculates a parity sequence.

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.

Abstract: A communication apparatus performs a communication using a communication frame corresponding to a predetermined frequency bandwidth including a first frequency bandwidth and a second frequency bandwidth. The communication frame includes a first communication channel that corresponds to the first frequency bandwidth and that has a plurality of subcarriers and a second communication channel that corresponds to the second frequency bandwidth and that has a plurality of subcarriers. The communication apparatus sets a first phase vector with respect to the first communication channel, sets a second phase vector with respect to the second communication channel, generates communication data by adjusting a phase of symbol data using the first phase vector and the second phase vector, and transmits the communication data using the communication frame.

Abstract: A communication apparatus that performs a communication with another communication apparatus using a frequency bandwidth including a plurality of communication channels and includes a processor and a communicating device. The communicating device transmits a signal to the another communication apparatus using a first number of communication channels included in the frequency bandwidth, and receives a response to the signal from the another communication apparatus using the first number of communication channels. The processor changes the number of communication channels used in the communication with the another communication apparatus, from the first number to a second number, in accordance with the response to the signal, and controls power for each of the communication channels used in the communication with the another communication apparatus based on the second number.

Abstract: Disclosed is a direct current power line communication apparatus, by which communication between electronic apparatuses with a direct current voltage line there between can be stabilized. The direct current power line communication apparatus, i.e., a direct current power line communication apparatus that transmits signals using the direct current voltage line (15a), is provided with: a PLC communication control unit (29), which controls the transmitting unit (27) connected to the direct current voltage line (15a); and a voltage detecting unit (30), which detects the voltage of the direct current voltage line (15a), and notifies the PLC communication control unit (29) of the detected voltage. The PLC communication control unit (29) transmits information, including the voltage information, to other direct current power line communication apparatus via the transmitting unit (27).

Abstract: An encoder and decoder using LDPC-CC which avoid lowering the transmission efficiency of information while not deteriorating error correction performance, even at termination; and an encoding method of the same. A termination sequence length determining unit determines the sequence length of a termination sequence transmitted added to the end of an information sequence, according to the information length (information size) and encoding rate of the information sequence. A parity calculation unit carries out LDPC-CC coding on the information sequence and the known-information sequence necessary for generating a termination sequence of the determined termination sequence length, and calculates a parity sequence.

Abstract: A charging control apparatus (1) that controls charging of a plurality of vehicles connected via a power line is provided with an electrical storage section (41) that stores power supplied from a power source, a communication section that receives information relating to supply power from the plurality of vehicles, a power amount calculation section (43) that calculates a supply power amount for the plurality of vehicles based on the information, and a control section that, if the supply power amount exceeds a second threshold value combining a remaining charge amount of the electrical storage section (41) and a contractual power amount, controls supply power for the plurality of vehicles so as to become smaller than the second threshold value.