Quantization. A continuous time signal is to be sampled at a sampling rate 8kHz. It is...
2) An analog video signal with a bandwidth of 5 MHz. is sampled at one and half times the Nyquist rate. The signal is then quantized using a uniform quantizer. The resulting output is then sent over a channel with a bandwidth of 94 MHz. using binary PAM with a raised cosine pulse with a roll-off factor of α = 0.25 a) Find the maximum number of quantiozation levels possible (2 Marks) b) Find the resulting Signal-to-Quantization-Noise Ratio (make any...
4) a. A signal g(t) = 20 cos 50nt.cos 220nt is sampled by a pulse train of frequency 250Hz. i. Calculate the Nyquist rate for the signal g(t). (4 Marks) ii. Sketch the spectrum of the resulting sampled signal. (5 Marks) iii. Specify the minimum cutoff frequency of the ideal reconstruction filter so as to recover g(t) from its sampled signal. (3 Mark) b. A signal in the frequency range 350 to 3500Hz is limited to peak to peak swing...
Question 2 An analog signal with a power Pm-GW, and a bandwidth of 4kHz is sampled at a rate f, = 10ksamples/sec. (a) What value of A will lead to an SQNR of 55dB if uniform quantization is used? (b) If the peak voltage of m(t) is 8V, what value of L satisfies (a)? (c) How many bits per sample should be used? (d) What is the bit rate if we use the number of bits per sample from (c)?...
Communication systems theory: Exercise 6: Consider an audio signal with an amplitude that ranges over the interval [-10,10] and with spectral components limited to the frequency band of 300 Hz to 3300 Hz. The signal is sampled at a rate of 8000 samples/second and used to generate a PCM signal. The signal-to-quantization- noise ratio (SQNR) is required to be maintained at 43.9 dB a) What is the minimum number of uniform quantization levels needed, and what is the minimum number...
1. A mono audio signal has a bit rate (sampling rate times bits per sample) of 35 MB/sec. How many seconds of such audio can be stored on a CD of 700 MB? 2. An audio signal is sampled at a rate of 256 samples per second and 8 bits are assigned to each sample. Calculate the file size of 4 seconds of stereo audio. 3. Following is(are) advantages of digital audio as compared to analog audio duplication flexibility environmental...
part c wasnt answered Question 2 (25 Marks) Consider the following analog waveform that is to be digitized using PCM The resulting PCM code is to be sent at a bit rate of 240000 bps over a communication medium having an SNR of 15 dB. Also, the sampling rate used is 40000 samples/sec. Answer the following questions: a. What is the number of quantizing levels? b. If the sampling time is doubled: 1. What is the number of bits per...
Question 1: (Sampling and Aliasing Effeet) (25 Marks) The given analog signal x(t)--sin(16xt)+ sin(11xt)+ sin (5nt), where t is in milliseconds, is sampled at a rate of 12kHz. The resulting samples are immediately reconstructed by an ideal reconstructor. a. Find and sketch the spectrum of x(t) versus Ω. b. Find and sketch the spectrum of the sampled signal versus o. c. Determine the analog signal x (t) at the output of the reconstructor. d. Prove the x(0) and x(t) having...
Digital Communication (ELEC 20004)-Spring-19-cW1 (ASSMNT)-All AK 1. a. A waveform m() -62 sin (3500t+)+36 sin(4500t5 is to be uniformly sampled for digital transmission. i. Determine the sampling frequency that satisfies the Nyquist criteria, and hence (7 Marks) determine the period of the signal ii. If we want to reproduce 55 minutes of this wave form, determine the how many (8 Marks) b. The output of a digital computer is at a rate of 64 kbps. If the roll off factors...