Howtosignalprocessing
- Why do you need upsampling before pulse shaping?
- Why is upsampling needed?
- How is pulse shaping done?
- 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.
Why is upsampling needed?
The purpose of Upsampling is to manipulate a signal in order to artificially increase the sampling rate. This is done by... Upsampling is an effective way to reduce time between samples of a signal without resampling the original signal.
How is pulse shaping done?
In electronics and telecommunications, pulse shaping is the process of changing the waveform of transmitted pulses to optimize the signal for its intended purpose or the communication channel. This is often done by limiting the bandwidth of the transmission and filtering the pulses to control intersymbol interference.
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.
