interference = np.sum(np.abs(h_2_k.T @ Phi @ self.H_1 @ G_removed) ** 2)
时间: 2023-06-16 16:03:22 浏览: 59
这段代码是计算干扰信号的功率,其中`h_2_k`是发送端到接收端k的信道向量,`Phi`是发送信号的功率矩阵,`self.H_1`是接收端其他用户的信道矩阵,`G_removed`是接收端已知信道的估计矩阵,并且`@`表示矩阵乘法。
具体来说,`h_2_k.T @ Phi @ self.H_1 @ G_removed`是计算接收端k接收到的信号,`np.abs()`是求复数的绝对值,`** 2`是对结果取平方,最后用`np.sum()`函数对所有的干扰信号功率进行累加。
相关问题
android.permission.CAPTURE_SECURE_VIDEO_OUTPUT
This permission allows the app to capture secure video output, which means the app can record video content that is protected by Digital Rights Management (DRM) technology. This permission is typically used by media player apps that need to play DRM-protected content, such as movies or TV shows that are purchased or rented from online stores. The permission ensures that the app can capture the video output without any interference from other apps or system components, and that the content remains protected throughout the recording process. This permission is not commonly used by regular apps and should only be granted to apps with a legitimate need to capture secure video output.
1. Towards_Massive_Connectivity_Support_for_Scalable_mMTC_Communications_in_5G_Networks
该论文提出了在5G网络中支持大规模物联网通信的解决方案。随着物联网设备数量的增加,需要一种能够支持连接大量设备的通信机制。作者提出了一种基于突发传输的机制,称为Bursty Random Access (BRA)。该机制允许设备随机访问网络,并使用短时间突发传输的方式发送数据。该机制还使用了一种称为Successive Interference Cancellation (SIC)的技术,用于解决传输冲突的问题。通过模拟实验,作者证明了该机制的有效性和可扩展性。
总的来说,该论文提供了一种有前途的解决方案,可以支持大规模物联网通信,并且在5G网络中具有很好的应用前景。
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