In wireless monitoring system, the received radio signals are polluted to a greater or lesser degree by the noise due to the influence of environment, equipments and other factors.

在无线监测系统中，由于受环境、设备等因素的影响，接收机接收到的无线电信号不同程度地被噪声污染，严重影响到监测结果的可靠性。

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Abstract: In wireless telecommunication, in order to protect communication system from monitoring and steal radio resource by illegal intruder, security is a critical issue for any operator.

摘要： 无线通信领域中，每个无线通信系统都很重视空中接口的安全性，防止非法者监听或是盗用系统的空中无线资源。

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This development is made possible by a new wave of technology: radio-frequency ID chips the size of pepper grains, broadband wireless and Web-based "dashboards" enabling monitoring and management.

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