| 摘要 |
PURPOSE:To improve the communication quality by enabling the change of a hopping frequency and making the device adaptive to a radio state under various environments. CONSTITUTION:Upon the receipt of an error occurrence notice from a decoding circuit 12, a spread code control section 17 specifies its carrier frequency to count an error for each hopping frequency. When an error exceeds a certain value as to a frequency, the frequency is changed to other idle frequency, and a data communication control section 14 is informed of the changed data. The data communication control section 14 sends the changed data to an opposite equipment as control data. The opposite equipment receiving the control data recognizes the changed data to change the hopping frequency used similarly into a new frequency. |
