eyediagram(x,n) generates an eye diagram for signal x, plotting n samples in each trace. The labels on the horizontal axis of the diagram range between –1/2 and 1/2. The function assumes that the first value of the signal and every n th value thereafter, occur at integer times.

In digital communications, an eye diagram provides a visual indication of how noise might impact system performance. Use the Eye Diagram block to examine the eye diagram of signals. Analysis such as measurements, histograms, and bathtub curves, will be removed from the Eye Diagram block in a future release.

May 26, 2022 · You can try using the modulation and transition functions in the “Communications Toolbox” in MATLAB for better results and then try using the “eyediagram” function. For changing the limits of the eye diagram, you can store the plot’s handle and use the appropriate parent-child relationship to edit the required limits.

Nov 22, 2018 · Eye diagram is a powerful tool to analyze the overall quality of a communication link. It reveals important characteristics of a communication link, that includes timing sensitivity, noise margin, inter-symbol interference (ISI) and zero-crossing jitter.

fs = 1000; sps = 4; % Create transmit filter and eye diagram objects. txfilter = comm.RaisedCosineTransmitFilter ('OutputSamplesPerSymbol',sps,'RolloffFactor',0.6); ed = …

What does your code do? eyediagram_dense creates a raster image of an eye diagram, capturing signal density at each point on the image. This function creates a diagram, alongside returning all the important information captured within it as a MATLAB struct.

May 24, 2013 · How do I plot the eye diagram relative to the signal contained in X using MatLab? I tried but I could not draw the eye diagram from the matrix X (see http://ge.tt/8Xq5SYh/v/1?c). Here is the link to the matrix X that I used: http://ge.tt/8Xq5SYh/v/0. and my MatLab code: %plot.

Apr 25, 2022 · This can be done easily in MATLAB using the reshape function on either I or Q which will create a matrix that when plotted will be the eye diagram. However the waveform should be resampled to be an integer number of samples and many samples per symbol so that the trajectories between the actual samples are visible.

Mar 30, 2025 · Use the `eyeDiagramSI` System Object: Create and configure the `eyeDiagramSI` object with the appropriate properties. Here is a corrected version of the code: eyeDiagram = eyeDiagramSI ('SampleInterval', sampleInterval, ... 'SymbolTime', symbolTime, ...

May 1, 2008 · Matlab/Octave script for simulating the eye diagram plot. The code performs the following. (a) Defines random BPSK modulated symbols (+1’s and -1’s) (b) Defines two raised cosine filters with = 0.5, = 1. (c) Upsamples the transmit sequence by zero insertion. (d) Convolves the upsampled transmit sequence with the filter.