Howtosignalprocessing
- How does pulse shaping reduce inter symbol interference?
- Why is pulse shaping used in digital modulations How does it work?
- What is the advantage of the sinc pulse shape on the bandwidth and frequency domain?
- Does OFDM use pulse shaping?
How does pulse shaping reduce inter symbol interference?
Reducing Inter-Symbol Interference (ISI)
One solution to this problem is the application of the pulse shaping filter that we have previously described. By applying this filter to each symbol that is generated, we are able to reduce channel bandwidth while reducing ISI.
Why is pulse shaping used in digital modulations How does it work?
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 the advantage of the sinc pulse shape on the bandwidth and frequency domain?
The advantages of the sinc pulse are similar to the advantages of the rectangular pulse, except that they hold in the frequency domain rather than in the time domain. It completely restricts the frequency content within a compact box so that we can tightly meet any bandwidth constraint.
Does OFDM use pulse shaping?
The principle of OFDM with pulse shaping has been introduced in [13]. One of the main criteria for pulse shape design is the time-frequency localization (TFL), which has been identified in [14] as an important target to achieve low out-of-band emissions and low interference induced in doubly dispersive channels.
