# QUESTION 3 (25 MARKS) Describe TWO (2) advantages and TWO (2) disadvantages of digital transmission (C01:...

QUESTION 3 (25 MARKS) Describe TWO (2) advantages and TWO (2) disadvantages of digital transmission (C01: P01 - 4 marks) b Sampling, quantization and coding are the three processes used to represent an analog signal in digital form. Considering an input signal into an 8-bit Pulse Code Modulation (PCM) system is a 20 Vpp 50-Hz, answer the followings: i. Using appropriate diagram briefly describe TWO (2) basic methods to perform the sampling function. (CO2: PO2 - 2 marks) Determine the number of quantization levels. (CO2: PO2 - 2 marks) Determine the quantization interval. (CO2: PO2 - 1.5 marks) iv. Determine the quantization error. (CO2: PO2 - 1.5 marks) V. Determine the quantization signal-to-noise ratio. (CO2: PO2 - 2 marks) vi. If the system runs uniform quantization using folded binary code, find the equivalent code for +9.89 V and voltage value for 11110001 (CO2: PO2 - 4 marks)

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