Howtosignalprocessing
- Why do you need upsampling before pulse shaping?
- What is difference between upsampling & interpolation?
- What is the purpose of upsampling?
- What is upsampling in signal processing?
Why do you need upsampling before pulse shaping?
Pushing the sample rate out by upsampling provides room to shape the spectrum as needed for transmit mask as well as matching. The same thing can be seen in the time domain. Shaping the eye pattern can only be done if there are more than one sample per symbol. That clear up some confusion.
What is difference between upsampling & interpolation?
Upsampling adds to the original signal undesired spectral images which are centered on multiples of the original sampling rate. “Interpolation”, in the DSP sense, is the process of upsampling followed by filtering. (The filtering removes the undesired spectral images.)
What is the purpose of upsampling?
The purpose of Upsampling is to manipulate a signal in order to artificially increase the sampling rate.
What is upsampling in signal processing?
Upsampling is the process of inserting zero-valued samples between original samples to increase the sampling rate. (This is sometimes called “zero-stuffing”.) This kind of upsampling adds undesired spectral images to the original signal, which are centered on multiples of the original sampling rate.
