In this experiment we study the root raised-cosine pulse due to Chennakeshu and Saulniex (1993). This pulse, denoted by p (t), has the following properties:

• The pulse p (t) is symmetric in time, that is, p(—t) = p (t)
• The squared Fourier transform of p (t), namely, P² (ƒ), satisfies the raised cosine spectrum of Equation (4.60), but the Fourier transform P (ƒ) itself does not.
• The pulse p (t) satisfies the orthogonality constraint, where T is the symbol period.

(a) Compute the baseband waveform of the binary data stream 101100 for roll off factor α = 0.3.

(b) Compare the waveform computed in part (a) with that obtained using the ordinary raised-cosine spectrum.

Transcribed Image Text:

plt)p(t - nT) dt = 0, n = +1, ±2, ... %3D