DSP Blockset

Adaptive and Multirate Filtering

The Adaptive Filters and Multirate Filters libraries provide key tools for the construction of advanced DSP systems. Adaptive filter blocks are parameterized to support the rapid tailoring of DSP algorithms to application-specific environments, and effortless "what if" experimentation. The multirate filtering algorithms employ polyphase implementations for efficient simulation and real-time code execution.

For an example of adaptive filtering, run the LMS Adaptive Equalization demo (lmsadeq). Equalization is important in the field of communications. It involves estimating and eliminating dispersion present in communication channels. In this demo, the LMS Filter block models the system's dispersion. The plot of the squared error demonstrates the effectiveness of this adaptive filter.

For an example of mutirate filtering, run the Sample Rate Conversion demo (dspsrcnv). This demo demonstrates two ways in which you can interpolate, filter, and decimate a signal. You can use either the Upsample, Direct-Form II Transpose Filter, and Downsample blocks, or the FIR Rate Conversion block.

See Multirate Filters and Adaptive Filters for more information.

Data Type Support

Statistical Operations