Communications Toolbox 4.4

Latest Features

Version 4.4

Released: 04 Sep 2009
 

Version 4.4, part of Release 2009b, includes the following enhancements:

• Expanded Error Vector Magnitude (EVM) measurement normalization options: average reference signal power, average constellation power, and peak constellation power
• New Adjacent Channel Power Ratio (ACPR) measurement for characterizing spectral regrowth in systems that use current and future wireless standards
• ACPR measurement that supports user-defined resolution bandwidth, window sidelobe attenuation, and arbitrary measurement filter
• New (bit, symbol, frame) error rate test console that accelerates communications system testing and design trade-off studies
• Option to use Parallel Computing Toolbox with Error Rate Test Console for simulation acceleration without code changes

See the Release Notes for details.

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Version 4.3

Released: 06 Mar 2009
 

Version 4.3, part of Release 2009a, includes the following enhancements:

• Error Vector Magnitude (EVM) measurements, providing performance evaluation in the presence of signal impairments
• Modulation Error Ratio (MER) measurements, providing signal-to-noise (SNR) evaluation for digital modulation methods
• New scope for scatter plot visualizations
• Support for multiple-input multiple-output (MIMO), providing spatial correlation between channels
• Support for pseudo-noise sequence generator functionality in the commsrc package

See the Release Notes for details.

Version 4.2

Released: 09 Oct 2008
 

Version 4.2, part of Release 2008b, includes the following enhancements:

• Enhanced EyeScope tool supports comparing measurement results for multiple simulation runs
• Enhanced Pattern Generator object that generates NRZ or RZ signals and injects jitter
• New multipath fading channel demo that illustrates the use of rayleighchan and ricianchan functions

See the Release Notes for details.

Version 4.1

Released: 01 Mar 2008
 

Version 4.1, part of Release 2008a, includes the following enhancements:

• Eye diagram measurements can now be generated from the histogram data of eye diagram objects
• New EyeScope tool shows both the eye diagram figure and measurement results in a unified, graphical user environment
• New CRC generator and detector objects
• The bchdec, bchenc, rsdec, and rsenc functions have been upgraded to objects that can now perform erasure decoding
• New demo for MIMO systems using spatial multiplexing

See the Release Notes for details.

Version 4.0

Released: 01 Sep 2007
 

Version 4.0, part of Release 2007b, includes the following enhancements:

• New bi-Gaussian Doppler and asymmetrical Jakes Doppler spectra objects
• Enhanced channel objects and channel visualization tool, supporting different Doppler spectra per path
• Enhanced ricianchan object, supporting different Rician parameters on all paths
• New demos modeling COST 207/GSM/EDGE and HF channels
• New eye diagram object using color to convey how often a trace traverses a point
• New PAM, OQPSK, DPSK, MSK, and General QAM modem objects
• Theoretical BERs added to BERTool and bercoding function for hard-decision and soft-decision decoding with awgn function

See the Release Notes for details.