THE UNIVERSITY OF LAHORE Assignment Subject: Digital Communication Section: A Session: F-19 1. Demonstrate the basic concept of Pulse code Modulation [CLO1-C3-PLO1]. 2. A band-limited signal 𝑚(𝑡) of 3 kHz bandwidth is sampled at rate of 33⅓ % higher than the Nyquist rate. The maximum allowable error in the sample amplitude (i.e., the maximum quantization error) is 0.5% of the peak amplitude 𝑚𝑝. Assume binary encoding. Solve for the minimum bandwidth of the channel to transmit the encoded binary signal [CLO1-C3-PLO1]. 3. Examine line coding and differentiate between Unipolar, Polar and Bipolar Line Coding Schemes [CLO2-C4-PLO2]. 4. Analyze a signal m (t) =2 cos(2𝜋 .250𝑡)) as a single-tone signal input [CLO2-C4-PLO2]. a) Examine the SNR with 8-bit PCM. b) If the minimum SNR is to be at least 36 dB, how many bits n are needed to encode the signal (i.e., find n)?