Communications Blockset

Gray Coded 8-PSK Demo

Gray coding is a technique often used in multilevel modulation schemes to minimize the bit error rate by ordering modulation symbols so that the binary representations of adjacent symbols differ by only one bit. This demo simulates a communications link using Gray-coded 8-PSK modulation.

The sections that follow discuss the data flow and variables in the demo, and then cover the processes within the model. The section Learning More About the Gray Coding Demo discusses some ways you can modify the model and compare its results with theoretical values.

Note    For more information about how parts of the model work, click on blocks within the figure below.

Data Flow in the Model