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    • 5. 发明专利
    • Communication method and a wireless communication device and a recording medium recording a communication processing program.
    • 空值
    • JP3747679B2
    • 2006-02-22
    • JP6200999
    • 1999-03-09
    • セイコーエプソン株式会社
    • 範夫 浜
    • H04B5/02H04B7/26H04J13/00H04J13/16H04W52/18H04W84/10
    • Y02D70/00Y02D70/42Y02D70/449
    • PROBLEM TO BE SOLVED: To enable high quality communication at a low cost and with low power consumption when communication using weak radio waves that do not need a license based on a radio law. SOLUTION: This device has a signal transmitting and receiving part 2 which transmits and receives a signal through an antenna 1 and also can output signal strength under a communication environment, a spread spectrum processing part 3 which performs spread spectrum processing of a signal to be transmitted when the signal is transmitted and applies inverse spread processing to a received signal when the signal is received and a controlling part 4 which calculates a noise level on the basis of signal strength obtained from the part 2 and sets a spread coefficient according to the noise level. When a user is on a receiving side, the spread coefficient set by the part 4 is notified to a transmitting side, and when the user is on a transmitting side, spread processing by the part 3 is performed according to the spread coefficient notified from the receiving side and data to be transmitted is sent to the receiving side. The part 4 also applies band control to a prescribed filter existing in the part 2 in accordance with the spread coefficient.
    • 要解决的问题:当使用基于无线电法不需要许可证的弱无线电波进行通信时,以低成本和低功耗实现高质量通信。 解决方案:该装置具有通过天线1发送和接收信号的信号发送和接收部分2,并且还可以在通信环境下输出信号强度;扩展频谱处理部分3,其进行要传输的信号的扩频处理 当信号被发送时,当接收到信号时对接收信号进行逆扩展处理;以及控制部分4,其基于从部分2获得的信号强度来计算噪声电平,并根据噪声电平设置扩展系数 。 当用户在接收侧时,将由第4部分设定的扩展系数通知给发送侧,并且当用户在发送侧时,根据从第3部分通知的扩展系数执行部分3的扩展处理 接收侧和要发送的数据被发送到接收侧。 部分4还根据扩展系数将频带控制应用于部分2中存在的规定滤波器。