Communication System, Communication Apparatus and Communication Control Method

A communication apparatus which conducts a modulation operation based on a modulation method selected from a plurality of modulation methods, and transmits a signal to another communication apparatus while controlling transmission power, the communication apparatus comprising:

• a first control portion applying a single modulation method to a first signal, and applying at least two modulation methods to a second signal included in a single frame together with the first signal;
• and
• a second control portion, when transmitting the single frame, conducting a first transmission power control operation on the first signal, and conducting a second transmission power control operation on the second signal.

A communication method of a communication apparatus for conducting a modulation operation based on a modulation method selected from a plurality of modulation methods, and transmitting a signal to another communication apparatus while controlling transmission power, the communication method comprising steps of:

• applying a single modulation method to a first signal, and applying at least two modulation methods to a second signal included in a single frame together with the first signal;
• and
• when transmitting the single frame, conducting a first transmission power control operation on the first signal, and conducting a second transmission power control, operation on the second signal.