In my map, every street segment is an entity. So each one is labelled as you can see in the picture. I'm trying to remove duplicate street labels within a given radius in QGIS, but I can't find how to do it. I know how to do it in ArcGIS, but in QGIS I cannot find the option.
You could use the vector > geoprocessing tools > dissolve tool. Make sure to put the field that you want to use as a label in the "dissolve field".This will give you a single line for each unique value in that field.
Then you can label the output layer as usual and put the desired radius that you'd use in ArGIS in the 'repeat' box of the labels tab of the layer properties.