Question: Question 2 (a) Given the data stream 11001001.... sketch the transmitted sequence of pulses for each of the following line codes: C) Manchester code [2

Question 2 (a) Given the data stream 11001001.... sketch the transmitted

Question 2 (a) Given the data stream 11001001.... sketch the transmitted sequence of pulses for each of the following line codes: C) Manchester code [2 marks) (ii) Bipolar retum-to-zero. [2 marks) (b) A source signal is sampled, quantized and encoded into PCM with pulse shaping. The corresponding information rate of the PCM signal is 2 kHz. The maximum permissible source bandwidth, the 6-dB bandwidth and the transmission bandwidth are found to be 1 kHz, 3 kHz and 6 kHz respectively. (1) The rolloff factor of the pulse shaping. [2 marks) (ii) The number of possible levels that can be taken by the information pulses. [1 mark) (ii) The number of quantization levels of the PCM quantizer [3 marks)

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