User`s guide

7 Communications Blockset 2.0.1 Release Notes
7-6
Known Software and Documentation Problems
This section updates the Communications Blockset 2.0.1 documentation set,
reflecting known Communications Blockset 2.0.1 software and documentation
problems.
Code Generation Limitations
Several Communications Blockset blocks are incompatible with Real-Time
Workshop. As a result, Real-Time Workshop cannot generate code for models
that include these blocks:
•Continuous-Time Eye and Scatter Diagrams block
•Multipath Rayleigh Fading Channel block
•Rician Fading Channel block
•Triggered Read from File block
•Triggered Write to File block
•Voltage-Controlled Oscillator block
•Blocks in the Analog Passband and Digital Passband sublibraries of the
Modulation library
•Blocks in the CPM sublibrary of the Digital Baseband sublibrary of the
Modulation library
Limited Frame and Matrix Support
The Communications Blockset provides limited support for matrix and
frame-based signals. In a future release, more blocks will support multichannel
behavior, and more blocks will be optimized for faster frame-based processing.
Release 12.1 strives to be forward-compatible in the sense that future signal
support modes should not invalidate current modes and should minimize the
difficulty of upgrading from Release 12.1 to a future release.
As a consequence of this view, some blocks now use strict guidelines to
determine the kinds of signals that they accept. One consideration is that if a
block will ultimately support frame-based multichannel signals, then a
sample-based vector input might potentially represent either a frame of data
from a single channel or a set of samples from multiple channels. Therefore,
even if such a block does not currently provide such comprehensive signal