Answer :- The value of SNR is-
where n = log2(256) = 8, i.e. number of bits has been used.
Thus,
Question 5) a. Determine and illustrate the partition levels and reconstruction levels of a uniform quantizer in the range of (-1,1) with 8 levels. b. Determine and illustrate the partition levels and reconstruction levels of a u-law quantizer in the range of (-1,1) with 8 levels, u = 15. c. For the sequence {0.5,-0.4,-0.7,0.2, 0.15, -0.25, ...}, determine the quantized sequence using the uniform quantizer of part a and the u -law quantizer of part b. Also determine the mean...
Suppose that a u-law compander with u=225 is used with a
128-level uniform symmetric(midriser) quantizer designed for
signals with a dynamic range of +-2 volts. If the input voltage is
1.15V, what is the final quantized voltage at the output of the
compression device?
I. Suppose that a μ-law compander with μ 255 is used with a 128-level uniform symmetric (midriser) quantizer designed for signals with a dynamic range of t2 volts. If the input voltage is 1.15 V, what...
1. (a) A signal band-limited to 10 kt is sampled at Nyquist rate and i-law quantized with ? 127. if this digital signal is to be transmitted with an SNR of at least 30 dB, determine the number of bits in the quantizer output. (b) What is the actual SNR observed at the quantizer output in part (a)7 (e) Determine the transmission bandwidth of the digital signal above.
Problem 3: A PCM system uses a uniform quantizer followed by a 6-bit encoder. The bit rate of the system is 50Mbps. (a) Identify the message bandwidth for which the system operates satisfactorily (b) Determine the output SNR when a sinusoidal input signal of 1MHz frequency is applied.
Write a MATLAB code to obtain the 4-level uniform quantizer for the exponential random variable with p(x) = e^(−x ) for x ≥ 0.
Help!!!
A information wave m(t) is transmitted using a 4-bit binary PCM system. A uniform quantizer is used to convert the sampled signal into a PCM bit stream. Assume a sampling rate of 2 times the Nyquist rate m(t) .5 0.5 2.5 Time (s) Figure 1: Intelligence signal m(). Determine 1. Determine the quantized sample value and its respective PCM sequence for the following samples: 2Ts, 3Ts and 4Ts 2. What bandwidth would be required to transmit this PCM signal?...
Q5) [10 marks] A message signal m(t) = -0.5sin(2500t) is converted into coded pulses using a binary PCM system: fs = 4 kHz, and 8-level midrise uniform quantizer with A= 0.2 V. i) [8 marks] For the two sampling times t = Ts and 4Ts, find the sample values, the quantized sample values, and the code words. ii) [2 marks] If a sequence (011101110) is decoded by a receiver, determine the output sample values.
5.2-1 A compact dise (CD) records audio signals digitlly by using PCM. Let the au bandwidth be 15 kHz. (a) If the Nyquist samples are uniformly quantized into L 65,5 (b) If the audio signal has average power of 0.1 W and peak voltage of 1 V, find the resulting (c) Determine the number of binary digits per second (bit/s) required to encode the audico (d) For practical reasons discussed in the text, signals are sampled at a rate well...
Problem 2: Consider a sampled image with PDF Pr(x)=2 x 0 SXS2 10 otherwise Design a four-level (L=4) unifrom quantizer for this image. Find the PDF of the quantized image and the associated mean squared error.
3. Consider a periodic signal c(t) with period T, = 2s (i.e. c(t) = c(t +nT) for any integer n), given by S-t for-1<t<0s it for 0 <t<1s This signal is input to a 256-level uniform quantizer with a dynamic range of 1.5 volts. Find the SQNR (in dB) at the quantizer output when the input is c(t). (t) =