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认知无线电是一种智能无线通信系统,它能感知周围环境,从环境中获取信息并通过实时改变诸如传输功率、载频、调制方式等参数来适应环境的变化。认知无线电的两个最主要的目标是高度可靠的通信方式和高效的频谱利用率,它要在不干扰频谱授权用户的情况下与其进行频谱共享。
Cognitive radio is an intelligent wireless communication system that can sense the surrounding environment, obtain information from the environment and adapt to environmental changes by changing parameters such as transmission power, carrier frequency and modulation mode in real time. The two main goals of cognitive radios are highly reliable means of communication and efficient spectrum utilization, which they should share spectrum with without disrupting the spectrum of authorized users.