| 摘要 |
To ensure AGC control with a quick response to each signal from any of a plurality of wireless communication terminal devices in a wireless LAN, AGC control is conducted by receiving signals from respective wireless terminals in control slots in one frame, detecting the signal level in a signal level detector circuit, then comparing it with a predetermined level in a level comparator circuit, and supplying the comparison value to VGA via a in loop filter.In this case, control values are stored in RAM. Thus, by identifying the terminal under transmission and reading out a control value for the terminal under transmission, AGC control is executed. As a result, when the terminal under transmission changes from one to another the, AGC loop can quickly follow this change.
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