WIRELESS MICROPHONE SYSTEM AND TRANSMISSION POWER CONTROL METHOD

摘要

A wireless communication apparatus and transmission power control method are disclosed, which can sustain communication with all microphone handsets while avoiding an increase in radio interference to another radio communication system as much as possible when radio communication is performed with a plurality of microphone handsets. In the wireless communication apparatus, a level measurement section measures an RSSI level of a call signal each time the base unit receives a call signal from each microphone handset; and a transmission power control section controls an amplification section so that a transmission power value is determined at a predetermined timing using a minimum value of the RSSI levels of the respective microphone handsets, and that a control signal is transmitted to the microphone handsets with the determined transmission power value.

主权项

1. A wireless microphone system comprising:
a plurality of microphone handsets; and a base unit that performs time division multiple access (TDMA) based radio communication with the plurality of microphone handsets, wherein the base unit comprises:
a level measurement section that measures a reception level of a signal transmitted from each of the microphone handsets; anda transmission power control section that determines a transmission power value in accordance with a minimum value of the reception levels and that controls transmission power so that a predetermined signal is transmitted to the plurality of microphone handsets with the determined transmission power value using a predetermined channel.