Root raised cosine pulse shaping peak value

1. What is raised cosine pulse shaping?
2. Why use root raised cosine?
3. What is the outcome of increasing the roll off factor of a raised cosine filter on overcoming the problem of ISI?
4. Which are the advantages of the raised cosine pulse shape?

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.

Why use root raised cosine?

Using 90% power Bandwidth (BW) measurement definition showed that the RRC filtering might improve spectrum efficiency by more than 75%. Furthermore using the matching RRC filters both in the transmitter and receiver provides the improved Bit Error Rate (BER) performance.

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.

Which are the advantages of the raised cosine pulse shape?

It allows for a transmit filter to limit channel bandwidth then inserts a receive filter to attenuate out-of-band channel noise.