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在衰落信号上叠加校准AWGN
选择N5115A Baseband Studio for fading的选件168，提供在衰落信号上叠加校准AWGN的能力。AWGN以数字方式叠加至衰落信号，因而能设置高度精确的信噪比。Baseband Studio for fading把设置AWGN这一非常复杂的任务简化成在用户界面中简单地调整C/N 或Eb/No。独特的 AWGN特性使您能在保持其它量中的一个量为常数时设置载波功率，噪声功率，C/N，Eb/No，以及载波＋噪声功率。精确和容易配置AWGN的能力也简化了接收器测试。
典型应用
推荐使用选件 168，在有AWGN存在时产生衰落信号。常见的应用包括仿真接收器灵敏度测试的强噪声信道环境。对于发送或接收分集测试这类应用，可把无关联噪声叠加至双信道配置。
注意：双信道配置要求每一信道所需的共两个选件，以及2块N5101A Baseband Studio PCI卡。
如何升级
如果您现在已有N5115A Baseband Studio for fading，即可通过购买N5115AK-168升级到包括选件161。
