Why do you think this pulse shaping filter is so widely used?
Note that the pulse shaping filter not only reduces intersymbol interference (ISI), but that it also reduces adjacent channel interference. Thus, pulse shaped filtering allows for the implementation of frequency division multiplexing (FDM) and a subset of FDM known as orthogonal frequency division multiplexing (OFDM).
What is pulse of a signal?
A pulse in signal processing is a rapid, transient change in the amplitude of a signal from a baseline value to a higher or lower value, followed by a rapid return to the baseline value.
What is filter span?
The Filter span in symbols, N, and the Output samples per symbol, L, determine the length of the filter’s impulse response, which is L * Filter span in symbols + 1. The rolloff factor determines the excess bandwidth of the filter. For example, a rolloff factor of .
How is RRC filtering used in space communication?
Use of the RRC filtering (i.e., pulse shaping) is adopted in commercial communications, such as cellular technology, and used extensively. However, its use in space communication is still relatively new. This will possibly change as the crowding of the frequency spectrum used in the space communication becomes a problem.
How is pulse shape filtering used in communications?
By applying a pulse-shaping filter to the modulated sinusoid, the sharp transitions are smoothed and the resulting signal is limited to a specific frequency band. Below, we show the time-domain modulated sinusoid. As this image illustrates, the phase and amplitude transitions happen much more gradually when filtering is implemented.
What are the requirements for a pulse shaping filter?
These requirements are: 1) generating bandlimited channels, and 2) reducing inter symbol interference (ISI) from multi-path signal reflections. Both requirements can be accomplished by a pulse shaping filter which is applied to each symbol.
How does RRC filter improve bit error rate?
Furthermore using the matching RRC filters both in the transmitter and receiver provides the improved Bit Error Rate (BER) performance. In this presentation the theory of three related concepts, namely pulse shaping, Inter Symbol Interference (ISI), and Bandwidth (BW) will be touched upon.