Learn more about Communications Toolbox

Version 4.1 (R2008a) Communications Toolbox Software

This table summarizes what's new in Version 4.1 (R2008a):

New Features and Changes	Version Compatibility Considerations	Fixed Bugs and Known Problems	Related Documentation at Web Site
Yes Details below	No	Bug Reports Includes fixes.	Printable Release Notes: PDF Current product documentation

New features and changes introduced in this version are

• Cyclic Redundancy Checking (CRC)

• Eye Diagram Measurements

• EyeScope Functionality

• New BCH and Reed Solomon Objects

• New Demos

Cyclic Redundancy Checking (CRC)

New CRC generator and detector objects have been added to the Communications Toolbox software.

Eye Diagram Measurements

Communications Toolbox product now provides eye diagram measurements, generated from the histogram data of eye diagram objects. This feature will be helpful for signal integrity analysis, a major focus of backplane and optical communications development.

You can obtain the following measurements on an eye diagram:

• Eye Crossing Times

• Eye Crossing Amplitude

• Eye Delay

• Eye Level

• Eye Amplitude

• Eye Height

• Eye Width

• Vertical Eye Opening

• Eye Crossing Percentage

• Eye SNR

• Quality Factor

• Random Jitter

• Deterministic Jitter

• Total Jitter

• RMS Jitter

• Peak-to-Peak Jitter

• Horizontal Eye Opening

• Eye Rise Time

• Eye Fall Time

EyeScope Functionality

EyeScope can be used to examine eye diagram results in a user-friendly, graphical environment. EyeScope shows both the eye diagram figure and measurement results in a unified GUI, providing a more efficient means for viewing results.

New BCH and Reed Solomon Objects

Communications Toolbox software now contains BCH and Reed Solomon objects. These objects extend the capabilities of existing BCH and Reed Solomon functions by enabling punctures and erasure coding. Refer to the following reference pages for more information:

• bchdec

• bchenc

• fec.rsdec

• fec.rsenc

New Demos

New demos have been added for spatial multiplexing and Eye Diagram Measurements.

• The spatial multiplexing demo illustrates how to perform spatial multiplexing using Successive Interference Cancellation (SIC) detection schemes.

• The Eye Diagram Measurements demo illustrates how to use the commscope.eyediagram object to perform eye diagram measurements on simulated signals.

Version 4.2 (R2008b) Communications Toolbox Software

Version 4.0 (R2007b) Communications Toolbox Software

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