Communications Toolbox 4.4
Latest Features
Version 4.4
Released: 04 Sep 2009Version 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 2009Version 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 2008Version 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
rayleighchanandricianchanfunctions
See the Release Notes for details.
Version 4.1
Released: 01 Mar 2008Version 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 2007Version 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.
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