Communication apparatus, communication system and...

Multiplex communications – Channel assignment techniques – Details of circuit or interface for connecting user to the...

Reexamination Certificate

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C370S208000, C370S278000, C370S282000, C370S431000, C379S399010, C340S500000, C340S540000, C340S541000, C340S561000, C340S600000, C455S013400, C455S522000

Reexamination Certificate

active

07633964

ABSTRACT:
It is an object of the invention to provide a communication apparatus, a communication system and a communication method enabling efficient transmission in accordance with a situation of a wired transmission line and capable of reducing an influence by a radiation power of the transmission line. The communication apparatus of the invention executes wired transmission using a plurality of sub carriers and includes a transmission signal generator for generating a transmission signal, and a transmission signal controller for controlling a transmission power of the transmission signal generated by the transmission signal generator based on a radiation power in a transmission line in correspondence with a frequency of the sub carrier, and a transmitter for transmitting the transmission signal the transmission power of which is controlled by the transmission signal controller via the transmission line.

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