Communication device and method of peak power control

摘要

Modulation circuits 101 to 104 modulate transmission signals of four users (using basic slots with pilot symbols cyclically inserted into transmission data) or a control signal including a pilot signal and transmission signals of three users (using basic slots with pilot symbols not inserted into transmission data). Phase rotation circuits 105 to 108 rotate phases of output signals from modulation circuits 101 to 104 according to the total number of users. Addition circuit I109 adds up the in-phase channels of the output signals from phase rotation circuits 105 to 108 and addition circuit Q110 adds up the quadrature-phase channels of the output signals from phase rotation circuits 105 to 108. Radio section 115 modulates the output signals from addition circuit I109 and addition circuit Q110 to radio frequencies and then amplifies these signals.