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发明授权
CN100583741C 无线通信系统 失效 - 权利终止

无线通信系统
摘要：
一种无线通信系统(100)，具备：无线装置(10、30)、天线(11)、以及阵列天线(20)。在将阵列天线(20)的指向性在多个指向性中变更的同时，以时分双工(TDD)等的以相同频率进行收发的方式，经天线(11)和阵列天线(20)相互进行收发。然后，无线装置(10和30)检测出接收的多个电波的强度，来分别制成表示多个强度的曲线的接收信号曲线(RSSI1、RSSI2)。无线装置(10和30)，分别将接收信号曲线(RSSI1、RSSI2)的多个强度多值化，并制成以该多值化了的多个值为位模式的秘密键(Ks1、Ks2)。
摘要（英）：

A radio communication system (100) comprising radio units (10, 30), an antenna (11), and an array antenna (20). The radio units (10, 30) transmit/receive specified signals through the antenna (11) and the array antenna (20) at the same frequency by a time division duplex (TDD) transmission/reception system, for example, while varying the directivity of the array antenna (20) among a plurality of directivities. The radio units (10, 30) detect the intensity of a plurality of received radio waves and create receiving signal profiles (RSSI1, RSSI2) indicative of a plurality of intensity profiles. The radio units (10, 30) represent the plurality of intensities of the receiving signal profiles (RSSI1, RSSI2) in multi-values and create private keys (Ks1, Ks2) having a bit pattern of the plurality of multi-values.

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