Learn more about Communications Blockset

Version 4.4 (R2010a) Communications Blockset Software

This table summarizes what is new in Version 4.4 (R2010a):

New Features and Changes	Version Compatibility Considerations	Fixed Bugs and Known Problems	Related Documentation at Web Site
Yes Details below	Yes Summary	Bug Reports Includes fixes	Printable Release Notes: PDF Current product documentation

New features and changes introduced in this version are

• HDL Code Generation Support

• Support for the For Each subsystem

• Sample-Based Row Vector Processing Changes

• New CMA Equalizer Default Setting

• Demos

HDL Code Generation Support

Some blocks in the Communications blockset software support HDL code generation. In order to generate HDL code, you must have an HDL Coder user license. The following blocks support HDL code generation:

• BPSK Demodulator Baseband

• BPSK Modulator Baseband

• Convolutional Deinterleaver

• Convolutional Interleaver

• M-PSK Demodulator Baseband

• M-PSK Modulator Baseband

• QPSK Demodulator Baseband

• QPSK Modulator Baseband

• Viterbi Decoder

Support for the For Each subsystem

You can use some Communications Blockset blocks in the Simulink For Each subsystem. When you use these blocks inside a For Each subsystem, their parameters are not tunable. See the Simulink Block Data Type Support Table for Communications Blockset for the blocks supporting this feature. For instructions on accessing the table, see Accessing the Data Type Support Table.

Sample-Based Row Vector Processing Changes

The following blocks issue a warning when processing sample-based row vectors:

• APP Decoder

• Convolutional Encoder

• Viterbi Decoder

• Algebraic Deinterleaver

• Algebraic Interleaver

• General Block Deinterleaver

• General Block Interleaver

• Matrix Deinterleaver

• Matrix Helical Scan Deinterleaver

• Matrix Helical Scan Interleaver

• Matrix Interleaver

• Random Deinterleaver

• Random Interleaver

• M-PAM Modulator Baseband

• Rectangular QAM Modulator Baseband

• DQPSK Modulator Baseband

• M-DPSK Modulator Baseband

• M-PSK Modulator Baseband

• OQPSK Modulator Baseband

• QPSK Modulator Baseband

• M-FSK Modulator Baseband

• CPFSK Modulator Baseband

• CPM Modulator Baseband

• Insert Zero

• Puncture

• Bit to Integer Converter

• Integer to Bit Converter

Compatibility Considerations

A future release will remove sample-based row vector support from these blocks. Use sample-based column vectors instead.

New CMA Equalizer Default Setting

The CMA Equalizer block has a new default setting. The Signal constellation parameter now defaults to QPSK, producing a signal with a constant modulus.

Compatibility Considerations

If your models rely on the previous default setting of 16 QAM for the Signal constellation parameter, this change may introduce an incompatibility.

Demos

Additional demos and demos with updates for this release:

• This release contains a new demo, HDL Support for Viterbi Decoder, which illustrates HDL code generation using the Viterbi Decoder.

• This release contains updates to the IEEE® 802.16-2004 OFDM PHY Link, Including Space-Time Block Coding demo. The demo now includes digital pre-distortion (DPD), showing how to compensate for memoryless nonlinearity, AM/AM, and AM/PM of an RF amplifier.

Communications Blockset Release Notes

Version 4.3 (R2009b) Communications Blockset Software

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