hi i need answer in 2 hours please my roll no is 26 please answer it asap....

Question 3: (CLO3-PL04-C6, 25 marks) You are entrusted to develop Analog to Digital conversion system for audio signals recorded from a heart patient. The gathered audio signal has an effective bandwidth of 12 kHz. This audio signal is to be sent over a digital channel having data-rate equal to 4R.2 kbps (Here Ris LSD of your roll number i.e. roll number 123 may use 43.0 kbps). Answer following questions: a. Evaluate the number of samples and the number of quantization levels required for uniform quantization if PCM is employed. (6) b. If the collected audio signal has average power equal to 1 watt and peak to peak voltage is 2V, evaluate SQNR of uniform quantizer designed in part (a). (6) c. Repeat part a) if Delta Modulation is used instead of PCM. (6) d. If the resulting digital data is to be stored in compact disk with 700 Mb storage capacity, evaluate the recording length in hours that can be stored in a single CD using designed ADC. Assume that the output of ADC must be 16 bits wide. (7) Question 4: (CLO2-PLO3-C5, 25 marks) Consider your roll number as hex number. If the input to a line coder block is (RRRR)hex (Here Ris LSD of your roll number i.e. roll number 123 may use (3333)hex as input to system). a. Prepare the corresponding waveforms of NRZ, Bipolar AMI, Manchester and 2B1Q encoding schemes. (6) b. Summarize the performance of schemes employed in part a) on the basis of bandwidth efficiency? (6) c. Prepare the corresponding waveforms of binary ASK, FSK and PSK modulators? (6) d. Summarize the performance of binary ASK, FSK, PSK and QAM on the basis of spectral efficiency? (7) Question 3: (CLO3-PL04-C6, 25 marks) You are entrusted to develop Analog to Digital conversion system for audio signals recorded from a heart patient. The gathered audio signal has an effective bandwidth of 12 kHz. This audio signal is to be sent over a digital channel having data-rate equal to 4R.2 kbps (Here Ris LSD of your roll number i.e. roll number 123 may use 43.0 kbps). Answer following questions: a. Evaluate the number of samples and the number of quantization levels required for uniform quantization if PCM is employed. (6) b. If the collected audio signal has average power equal to 1 watt and peak to peak voltage is 2V, evaluate SQNR of uniform quantizer designed in part (a). (6) c. Repeat part a) if Delta Modulation is used instead of PCM. (6) d. If the resulting digital data is to be stored in compact disk with 700 Mb storage capacity, evaluate the recording length in hours that can be stored in a single CD using designed ADC. Assume that the output of ADC must be 16 bits wide. (7) Question 4: (CLO2-PLO3-C5, 25 marks) Consider your roll number as hex number. If the input to a line coder block is (RRRR)hex (Here Ris LSD of your roll number i.e. roll number 123 may use (3333)hex as input to system). a. Prepare the corresponding waveforms of NRZ, Bipolar AMI, Manchester and 2B1Q encoding schemes. (6) b. Summarize the performance of schemes employed in part a) on the basis of bandwidth efficiency? (6) c. Prepare the corresponding waveforms of binary ASK, FSK and PSK modulators? (6) d. Summarize the performance of binary ASK, FSK, PSK and QAM on the basis of spectral efficiency? (7)