Interleave: Difference between revisions

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This block interleaves blocks of samples. For each input connection, the samples are interleaved successively to the output connection.  
This block interleaves blocks of samples. For each input connection, the samples are interleaved successively to the output connection.  
This block can also be viewed as a special case of the [[Patterned_Interleaver|Patterned Interleaver]] in which the pattern is defined by a block size and always goes in sequential order. For example, a [[Patterned_Interleaver|Patterned Interleaver]] block with a pattern <code>0, 0, 1, 1, 2, 2</code> would be the equivalent of this block with BlockSize=2, Num Streams=3.


== Parameters ==
== Parameters ==

Latest revision as of 19:32, 30 July 2023

Interleave N inputs into a single output

This block interleaves blocks of samples. For each input connection, the samples are interleaved successively to the output connection.

This block can also be viewed as a special case of the Patterned Interleaver in which the pattern is defined by a block size and always goes in sequential order. For example, a Patterned Interleaver block with a pattern 0, 0, 1, 1, 2, 2 would be the equivalent of this block with BlockSize=2, Num Streams=3.

Parameters

Num Streams
Total number of input ports
Block size
Number of items from one input to output before switching to the next input
Vector length
Number of samples in a vector item

Example Flowgraph

Below is a simple flowgraph example interleaving two vector sources:

Interleave example flowgraph.png


The block properties are set for block size 2 so it passes two outputs from a given vector source before switching.

Interleave example properties.png


For this example that means the output begins with: 0, 1, 10, 11, 2, 3, 12, 13, 0, 1, .... The output is graphed below using a QT GUI Time Sink Block with a positive slope trigger. This is why the output displayed begins at 1 instead of zero.

Interleave example output.png

Source Files

C++ files
[1]
Header files
[2]
Public header files
[3]
Block definition
[4]