Root raised cosine pulse

1. What is a raised cosine pulse?
2. Why use root raised cosine?
3. Which are the advantages of the raised cosine pulse shape?
4. Which of the following is one period of a raised cosine?

What is a raised cosine pulse?

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. Figure 3.23 illustrates the raised cosine spectral characteristics.

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.

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.

Which of the following is one period of a raised cosine?

Therefore, in the case of the basic cosine function, f(x) = cos(x), the period is 2π.