Communications Toolbox

Filtering with Raised Cosine Filters

The rcosflt function applies a raised cosine filter to data. Because rcosflt is a versatile function, you can

• Use rcosflt to both design and implement the filter

• Specify a raised cosine filter and use rcosflt only to filter the data

• Design and implement either raised cosine filters or square-root raised cosine filters

• Specify the rolloff factor and/or group delay of the filter, if rcosflt designs the filter

• Design and implement either FIR or IIR filters

This section discusses the use of sampling rates in filtering and then covers these options. For an additional example, type playshow rcosdemo in the MATLAB Command Window.

Example with Default Parameters

Sampling Rates

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