Version 4.0 (R2008a) Communications Blockset™ Software Release Notes Release Notes

Version 4.0 (R2008a) Communications Blockset™ Software Release Notes

This table summarizes what's new in Version 4.0 (R2008a):

New features and changes introduced in this version are

• Fixed Point Support for New Blocks

• Integer to Bit Converter and Bit to Integer Converter Blocks Enhanced

• Asynchronous Signal Support

• Bipolar to Unipolar Converter and Unipolar to Bipolar Converter Blocks Enhanced

• Demos

Fixed Point Support for New Blocks

The following blocks now support fixed-point data types:

• General QAM Demodulator Baseband

• Gold Sequence Generator

• Integrate and Dump

• OQPSK Demodulator Baseband

Integer to Bit Converter and Bit to Integer Converter Blocks Enhanced

New default Inherit via internal rule mode added to the Output data type parameter on Integer to Bit Converter and Bit to Integer Converter blocks.

These blocks also contain new parameters that specify bit ordering and signed or unsigned bit formatting. The new parameters for Integer to Bit Converter are Treat input values as and Output bit order. The new parameters for Bit to Integer Converter are Input bit order and After bit packing, treat resulting integer as.

Asynchronous Signal Support

Asynchronous signal support has been added to the Communications Blockset™ product.

Bipolar to Unipolar Converter and Unipolar to Bipolar Converter Blocks Enhanced

New default Inherit via internal rule mode added to the Output data type parameter on the Bipolar to Unipolar Converter and Unipolar to Bipolar Converter blocks.

Demos

Demos added or updated for this release:

• The Adaptive Equalization Using Fixed Point Embedded MATLAB™ demo illustrates how to implement fixed-point signal processing with models that use the Embedded MATLAB Function block in Simulink^® software to construct equalizers.

• The Passband Modulation demo illustrates a straightforward way to perform passband modulation, by multiplying a modulated complex signal by a complex sine wave to perform frequency upconversion..

• The LLR vs. Hard Decision Demodulation demo now illustrates how to use quantized soft decision demodulation.

All Communications Blockset demos now work with Rapid Accelerator mode, except the following:

• Bluetooth Full Duplex Voice and Data Transmission

• Adaptive Equalization: LMS, RLS, and CMA

• GMSK vs. MSK

• Fixed-Point MSK Modulation/Demodulation (FPRA Platform)

• Increasing NCO Spurious-Free Dynamic Range (SFDR) by using a PN Sequence Dither Source and Two-Stage Phase Quantization

• IEEE 802.11b WLAN PHY 1Mbps, 2Mbps, 5.5Mbps, or 11Mbps

A known limitation of the Rapid Accelerator mode is that models using multirate scopes do not refresh when changes are made.

Communications Blockset™ Release Notes

Version 3.6 (R2007b) Communications Blockset™ Software Release Notes