Pulse shaping in digital communication pdf

1. What is pulse shaping in digital communication?
2. Which filter is used for pulse shaping?
3. Does OFDM use pulse shaping?
4. What is the disadvantage of the sinc pulse shape?

What is pulse shaping in digital communication?

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.

Which filter is used for pulse shaping?

The Gaussian filter is a pulse shaping technique that is typically used for frequency shift keying (FSK) and minimum shift keying (MSK) modulation. This filter is unlike the raised cosine and root raised cosine filters because it does not implement zero crossing points.

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.

What is the disadvantage of the sinc pulse shape?

Also, the sinc pulse is very sensitive to the timing jitters at the receiver. These problems can be addressed when the transition band in the frequency domain is made less abrupt.