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Compatibility Summary for Communications Blockset Software

This table summarizes new features and changes that might cause incompatibilities when you upgrade from an earlier version, or when you use files on multiple versions. Details are provided in the description of the new feature or change.

Version (Release)	New Features and Changes with Version Compatibility Impact
Latest Version V4.2 (R2009b)	None
V4.2 (R2009a)	See the Compatibility Considerations subheading for each of these new features or changes: DPSK Modulator Baseband Block Enhancements
V4.1 (R2008b)	None
V4.0 (R2008a)	See the Compatibility Considerations subheading for each of these new features or changes: Demos
V3.6 (R2007b)	See the Compatibility Considerations subheading for each of these new features or changes: TCM Decoder Blocks Enhanced
V3.5 (R2007a)	See the Compatibility Considerations subheading for each of these new features or changes: M-FSK Modulator Block Errors When Used with Sample-Based Signals and Multitasking Solver
V3.4 (R2006b)	See the Compatibility Considerations subheading for each of these new features or changes: Binary Error Pattern Generator Block Is Obsoleted Binary Error Pattern Generator Block Is Obsoleted Obsolete Blocks
V3.3 (R2006a)	See the Compatibility Considerations subheading for each of these new features or changes: Rician Fading Channel Block Is Obsoleted SSB AM Passband Block Output saveas_commblks Obsoleted
V3.2 (R14SP3)	None
V3.1 (R14SP2)	See the Compatibility Considerations subheading for each of these new features or changes: PN Sequence Generator Block Allows Mask Bits from Input Port Improvements and Changes to the Multipath Rayleigh Fading Channel Block Discrete-Time VCO Block Voltage Controlled Oscillator Block Renamed to Continuous-Time VCO CPM Modulator Baseband and GMSK Modulator Baseband Blocks
V3.0.1 (R14SP1)	None
V3.0 (R14)	See the Compatibility Considerations subheading for each of these new features or changes: Changes in BCH Encoder and BCH Decoder Changes in Fading Channel Blocks Changes in Integrators Change in Error Rate Calculation Block Version 1.3 Libraries Removed Obsolete Blocks Blocks Now in Different Library Locations Changes in Block Dialog Boxes Changes in commstartup Function Simulation Settings of Legacy Models
V2.5 (R13)	See the Compatibility Considerations subheading for each of these new features or changes: Old Models Using the Baseband or Passband SSB Modulators Must Be Resaved Change the Boolean Logic Signals Parameter to Off
V2.0.1 (R12.1)	See the Compatibility Considerations subheading for each of these new features or changes: Binary Symmetric Channel Block Digital Passband Modulation Blocks
V2.0 (R12)	See the Compatibility Considerations subheading for each of these new features or changes: New Block Libraries New Signal Support Functionality Changes in Specific Blocks Block Name Changes Obsolete Blocks

Version 2.0 (R12) Communications Blockset Software Release Notes

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