MATLAB System block 'sdruqpskrx_R2017b/QPSK Receiver/Frame Synchronizer' error occurred when invoking 'getOutputSizeImpl' method of 'FrameSynchronizer'. The error was thrown from ' 'C:\360\Final_exam_QPSK_Rx_2023\FrameSynchronizer.m' at line 221'. Caused by: Input length must be equal to or greater than output frame length. Component:Simulink | Category:Model error Error in port widths or dimensions. 'Output Port 2' of 'sdruqpskrx_R2017b/QPSK Receiver/Preamble Detector' is a matrix with a maximum size of [2253x1].

这个错误是由于在接收到的信号中，输入的长度小于输出帧的长度，导致的。在你的模型中，QPSK接收器的帧同步器模块出现了这个错误。具体来说，你需要检查一下输入信号的长度是否与输出帧的长度相等或更长。另外，也需要检查一下Preamble Detector模块的输出端口2是否为一个最大大小为[2253x1]的矩阵。你可以在代码的221行查看具体的错误信息。

相关问题

When I use updated Matlab2017b, I met:Can't load '/usr/local/MATLAB/R2017b/bin/glnxa64/libmwdastudio.so': /lib/x86_64-linux-gnu/libfontconfig.so.1: undefined symbol: FT_Done_MM_Var. How to solve the problem

The error message you encountered, "Can't load '/usr/local/MATLAB/R2017b/bin/glnxa64/libmwdastudio.so': /lib/x86_64-linux-gnu/libfontconfig.so.1: undefined symbol: FT_Done_MM_Var," suggests a problem with the fontconfig library used by MATLAB.

To solve this issue, you can try the following steps:

1. Update fontconfig library: First, try updating the fontconfig library on your system. You can do this by running the following command in your terminal:

   sudo apt-get update
   sudo apt-get install libfontconfig1

This will update the fontconfig library to the latest version available in your Linux distribution's package manager.

2. Check library paths: Ensure that the library path for fontconfig is correctly set in MATLAB. You can do this by running the following command in MATLAB's command window:

   getenv LD_LIBRARY_PATH

Make sure the output includes the correct path to the fontconfig library (e.g., `/usr/lib/x86_64-linux-gnu`).

3. Verify system compatibility: Verify that your system is compatible with MATLAB 2017b. Ensure that you are using a supported version of Linux and that all system requirements for MATLAB are met.

4. Reinstall MATLAB: If the above steps do not resolve the issue, you may need to reinstall MATLAB. Uninstall MATLAB completely and then reinstall it, making sure to follow all installation instructions and prompts carefully.

If the problem persists after trying these steps, it might be helpful to contact MathWorks support for further assistance, as they can provide more specific guidance tailored to your system and setup.

I run find /usr/local/MATLAB/R2017b -name libmwcpp11compat.so and it was found in the correct location, but it still showed that error while loading shared libraries: libmwcpp11compat.iso: cannot open shared object profile when loading MatLab2017b in linux

If the library `libmwcpp11compat.so` is found in the correct location, but you still encounter the "error while loading shared libraries: libmwcpp11compat.iso: cannot open shared object" issue when loading MATLAB 2017b in Linux, you can try the following additional steps:

1. Set the `LD_LIBRARY_PATH` environment variable to include the directory containing the `libmwcpp11compat.so` library. Open a terminal and enter the following command:

   export LD_LIBRARY_PATH=/usr/local/MATLAB/R2017b/bin/glnxa64:$LD_LIBRARY_PATH

Replace `/usr/local/MATLAB/R2017b` with your actual MATLAB installation path if it is different.

2. Try running MATLAB again and check if the issue persists.

3. If the issue still persists, try enabling symbolic linking for shared libraries by running the following command:

   sudo ldconfig

4. If none of the above solutions work, you can try reinstalling MATLAB 2017b. Before reinstalling, make sure to completely remove any existing MATLAB installation and related files.

5. If the problem still persists after reinstalling, you may need to contact MathWorks support for further assistance. Provide them with detailed information about the error message and your system setup to help them diagnose and resolve the issue more effectively.

It's worth noting that this error could also be caused by other factors, such as compatibility issues or incorrect library versions. In such cases, MathWorks support can provide more specific guidance tailored to your situation.