Raised cosine filter roll-off factor

1. What is the outcome of increasing the roll off factor of a raised cosine filter on overcoming the problem of ISI?
2. What does a raised cosine filter do?
3. What is raised cosine pulse-shaping?
4. What is raised cosine filter in digital communication?

What is the outcome of increasing the roll off factor of a raised cosine filter on overcoming the problem of ISI?

Explanation: As the rolloff factor increases, the bandwidth of the filter also increases and the time sidelobe levels decrease in adjacent symbol slots. Thus, it implies that increasing rolloff factor decreases the sensitivity to timing jitter but increases the occupied bandwidth.

What does a raised cosine filter do?

A typical use of raised cosine filtering is to split the filtering between transmitter and receiver. Both transmitter and receiver employ square-root raised cosine filters. The combination of transmitter and receiver filters is a raised cosine filter, which results in minimum ISI.

What is raised cosine pulse-shaping?

The raised cosine pulse is one type of Nyquist-II pulse. It possesses a transfer function given by. (3.67) where β is called the roll-off factor, which takes values between 0 to 1, and β/2T is called the excess bandwidth.

What is raised cosine filter in digital communication?

The raised-cosine filter is a filter frequently used for pulse-shaping in digital modulation due to its ability to minimise intersymbol interference (ISI). Its name stems from the fact that the non-zero portion of the frequency spectrum of its simplest form ( ) is a cosine function, 'raised' up to sit above the.