Please assist with question 3, details on how to do. Thank you. Check image for Q33. Figure shows a PCM signal in which the amplitude levels of volt and volt are used to represent binary symbols 1 and 0, respectively. The code word used consists of three bits. Find the sampled version of an analog signal from which this PCM signal is derived. 1. Consider a compact disc that uses pulse-code modulation to record audio signals whosebandwidth W = 15 kHz Specifications of the modulator include the following:Quantization: uniform with 512 levelsEncoding: binaryDetermine (a) the Nyquist rate, and (b) the minimum permissible bit rate.2. This problem addresses the digitization of a television signal using pulse-codemodulation. The signal bandwidth is 4.5 MHz. Specifications of the modulator includethe following:Sampling: 15% in excess of the Nyquist rateQuantization: uniform with 1024 levelsEncoding: binaryDetermine (a) the Nyquist rate, and (b) the minimum permissible bit rate.3. Figure shows a PCM signal in which the amplitude levels of volt and volt are usedto represent binary symbols 1 and 0, respectively. The code word used consists of threebits. Find the sampled version of an analog signal from which this PCM signal is derived.+1AN

Given data The PCM signal is shown by the given figure in the question. In which amplitude levels of voltage are represented by 1 and 0. We need to find the sampled version of an analog signal. Calculation of the transmitted codes Consider below PCM signal representation Note that 1 represents binary 1 and -1 represents binary 0. As each code word consists of 3-bits, So, the transmitted codes are, 001→1V010→2V011→3V100→4V101→5V110→6VSampled version of an analog signal The sampled version of an analog signal is shown below, From 0 to 3 Tb, 001 code word is sent whose analog amplitude is 1 V. From 3 Tb to 6 Tb, 010 code word is sent whose analog amplitude is 2 V. From 6 Tb to 9 Tb, 011 code word is sent whose analog amplitude is 3 V. From 9 Tb to 12 Tb, 100 code word is sent whose analog amplitude is 4 V. From 12 Tb to 15 Tb, 101 code word is sent whose analog amplitude is 5 V. From 15 Tb to 18 Tb, 110 code word is sent whose analog amplitude is 6 V.