Communications Blockset Release Notes    

New Signal Support

As of Release 12, Simulink supports matrix signals in addition to one-dimensional arrays, and frame-based signals in addition to sample-based signals. The Communications Blockset processes certain kinds of matrix and frame-based signals.

Because a future release is planned to include more comprehensive matrix and frame support, some Release 12 blocks avoid conflict with future features by using strict guidelines to determine the kinds of signals that they now accept. As a consequence, if you used vector signals in a model before Release 12, then you might need to use a particular kind of vector signal in Release 12 (such as a frame-based column vector, a frame-based row vector, or a sample-based vector of a particular shape or dimension).

As another consequence of frame support, the AWGN Channel and Derepeat blocks no longer have the Frame-based inputs check box and the Number of channels parameter as in the Communications Toolbox 1.5. Instead, these blocks inherit the frame status and number of channels from their inputs.

The Communications Blockset User's Guide includes more detail about signal support. To learn the terminology associated with signal attributes, see the Technical Conventions section. For general information about signal support in the Communications Blockset, see the Signal Support" section.


  New Block Libraries in Release 12 Functionality Changes in Specific Blocks