Version 3.5 (R2007a) Communications Toolbox Software :: Communications Toolbox Release Notes (Communications Toolbox)

Version 3.5 (R2007a) Communications Toolbox Software

This table summarizes what's new in Version 3.5 (R2007a):

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.	No

New features and changes introduced in this version are

Added Support for Different Doppler Spectra to Channel Objects

A package of Doppler classes is added. These classes are used to instantiate Doppler objects to be used with the Rayleigh and Rician channel objects:

See individual reference pages for details.

Theoretical Results Refined for `berawgn`, `berfading`, and BERTool

Many of the previous theoretical results are now more accurate.

The functions berawgn and berfading can now return the symbol error rate in addition to the bit error rate.

Several new theoretical results have been added.

Compatibility Considerations

The results from these functions may be different from those of previous releases as they are now more accurate.

Various Enhancements Made to BERTool

When performing Monte Carlo simulations using BERTool, the BER plot is now updated every time a new data point is calculated. This allows the user to see whether the calculation is on the right track, and possibly start using the results while the calculation is in progress.

Theoretical BER plots are now shown to be one of exact, approximate, lower bounds, or upper bounds.

Theoretical error control coding BER results for Hamming, Golay, and Reed Solomon codes are now available in the BERTool.

See BERTool: A Bit Error Rate Analysis GUI in the Communications Toolbox User's Guide for details.

New Demo on MIMO Systems Showcasing Space-Time Block Coding

A new demo on MIMO systems is added, illustrating orthogonal space-time block coding. You can open this demo by typing showdemo('introMIMOSystems') at the command line.

New PN Sequence Generator Object

The object seqgen.pn produces a pseudorandom noise sequence using a linear-feedback shift register that is implemented using a simple shift register generator (SSRG, or Fibonacci). See reference page for details.