修改“After receiving the signal at the receiver, $\mathbf{y}$ needs to multiply $e^{-j\theta_1}$ before entering the channel decoder to alleviate the effects from physical channels and make the processed signal as close as possible to the transmitted signal.”使其更加native，easy to read，简短清晰，符合technical paper的风格

After the receiver receives the signal, it must be multiplied by $e^{-j\theta_1}$ before entering the channel decoder. This helps to mitigate the effects from the physical channels and bring the processed signal as close as possible to the original transmitted signal.

相关问题

Do you want to continue?([Y]es/[N]o): Yes Upgrading the following packages: ros-melodic-desktop_full By upgrading, you accept licenses for the packages. Unable to load the service index for source https://roswin.azure.azurewebsites.net/api/v2. Unable to connect to source 'https://roswin.azure.azurewebsites.net/api/v2': 未将对象引用设置到对象的实例。 ros-melodic-desktop_full was not found with the source(s) listed. If you specified a particular version and are receiving this message, it is possible that the package name exists but the version does not. Version: ""; Source(s): "https://roswin.azure.azurewebsites.net/api/v2;https://community.chocolatey.org/api/v2/" Chocolatey upgraded 0/1 packages. See the log for details (c:\opt\chocolatey\logs\chocolatey.log). Warnings: - ros-melodic-desktop_full - ros-melodic-desktop_full was not found with the source(s) listed.这个报错是什么意思？

这个报错提示说无法从指定的网址 https://roswin.azure.azurewebsites.net/api/v2 加载服务索引。可能是由于网络连接问题或者该网址不存在导致的。此外，还提示说无法找到名为 ros-melodic-desktop_full 的软件包。如果您指定了特定的软件包版本并收到此消息，则可能存在该软件包名称但不存在该版本。

Process: com.android.systemui, PID: 12501 C1C4B8B 06-09 16:11:31.132 12501 12501 E AndroidRuntime: java.lang.RuntimeException: Error receiving broadcast Intent { act=android.net.conn.CONNECTIVITY_CHANGE flg=0x4200010 (has extras) } in com.android.systemui.qsview.signal.SignalUtils$1@dbb3275 C1C4B8B 06-09 16:11:31.132 12501 12501 E AndroidRuntime: at android.app.LoadedApk$ReceiverDispatcher$Args.lambda$getRunnable$0$android-app-LoadedApk$ReceiverDispatcher$Args(LoadedApk.java:1830) C1C4B8B 06-09 16:11:31.132 12501 12501 E AndroidRuntime: at android.app.LoadedApk$ReceiverDispatcher$Args$$ExternalSyntheticLambda0.run(Unknown Source:2) C1C4B8B 06-09 16:11:31.132 12501 12501 E AndroidRuntime: at android.os.Handler.handleCallback(Handler.java:942) C1C4B8B 06-09 16:11:31.132 12501 12501 E AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:99) C1C4B8B 06-09 16:11:31.132 12501 12501 E AndroidRuntime: at android.os.Looper.loopOnce(Looper.java:201) C1C4B8B 06-09 16:11:31.132 12501 12501 E AndroidRuntime: at android.os.Looper.loop(Looper.java:288) C1C4B8B 06-09 16:11:31.132 12501 12501 E AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:8061) C1C4B8B 06-09 16:11:31.132 12501 12501 E AndroidRuntime: at java.lang.reflect.Method.invoke(Native Method) C1C4B8B 06-09 16:11:31.132 12501 12501 E AndroidRuntime: at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:703) C1C4B8B 06-09 16:11:31.132 12501 12501 E AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:911) C1C4B8B 06-09 16:11:31.132 12501 12501 E AndroidRuntime: Caused by: java.lang.IllegalStateException: Pid 12501 has exceeded the number of permissible registered listeners. Ignoring request to add.

这是一个Android运行时异常，它指示您的应用程序中有太多的监听器。在Android系统中，每个应用程序都有一个最大监听器数限制，以防止应用程序过度使用系统资源。

要解决此问题，您可以尝试以下步骤：

1. 确认您的应用程序是否注册了多个监听器。如果是，请尝试减少注册数量。
2. 如果您的应用程序使用了第三方库，请检查库中是否存在注册监听器的代码，并尝试通过升级库或更改代码来解决问题。
3. 如果您的应用程序使用了多个线程，请确保每个线程都没有注册太多的监听器。
4. 如果您仍然无法解决问题，请尝试在应用程序中使用更高级的事件处理方法，例如使用RxJava或LiveData等库。

总之，您需要检查您的代码中是否有过多的监听器注册。如果您无法解决问题，请咨询Android开发社区以获取更多帮助。