# Tutorial10 - EE 3008 Extra Tutorial Questions Q1 Consider...

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EE 3008. Extra Tutorial Questions Q1) Consider a µ -law compression with µ =100 and x max =1V. What is the compressor output y for x = 0.5V and x = 0.8V? Q2) Consider a 7-bit non-linear PCM system based on µ -law with µ = 255. Let the input signal be limited in [-1, +1]. a) Find the minimum amplitude of the quantized values. b) Find the second minimum amplitude of the quantized values. c) Find the third minimum amplitude of the quantized values. d) Find the general expression for all the quantized values. e) Determine the dynamic range of this system in dB. Q3) In a DM system , the digital signal is 0000101111 1111010000 . (a) Draw the demodulation output without lowpass filtering. (b) Sketch the output with lowpass filtering. Q4) A DM system uses a pulse rate of 1kHz and step size of 1V. Find the digital output for the following signal. Assume the DM start at 0ms and end at 14 ms. Assume that the initial feedback function is zero. Q5) Consider an FM system with the modulated signal s ( t ): () cos 2 t c s tA f t k m t d t π −∞ =+ ⎩⎭ 3.7V t 8.4ms 0 14ms

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Tutorial10 - EE 3008 Extra Tutorial Questions Q1 Consider...

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