【摘要】 干扰温度机制是美国联邦通信委员会(FCC)为应用认知无线电(CR)技术以提高频谱利用率而提出的一种方法,在一定的范围内有着广泛的应用前景。但是实施干扰温度机制存在一些问题,特别是干扰温度检测方法中隐蔽站、暴露站的问题,处理不好将直接导致CR技术无法应用。适当的改变授权用户接收机使其发送信标信号可以有效的缓解这些问题。应用智能天线技术可以更好地利用空域信息以减小非授权用户对授权系统的干扰及非授权用户之间的相互干扰,促进CR技术的应用与频谱的共享。更多还原

【Abstract】 The interference temperature mechanism is put forward by the Federal Communications Commission (FCC) to increase the utility of spectrum using the Cognitive Radio (CR) technology, which has a wide application foreground in a certain area. But, there are some problems with the interference temperature mechanism such as the interference temperature detection, especially the detection of the hidden station and the exposed station, which will cause the inefficacy of the CR technology based on interference temperature mechanism. These problems will be effectively improved by making the receiver of the licensed user to send a beacon signal. The application of smart antenna technologies would be feasible to promote the application of CR technology and the sharing of spectrum. By using the space domain information, it effectively reduces the interference between the unlicensed user and the licensed user, as well as the interference between the unlicensed users.更多还原