Data communication Qs A signal has a bandwidth frequency of 150 Hz and the highest frequency...
If the frequency spectrum of an analog signal has a bandwidth of 500 Hz with the lowest frequency at 100 Hz, what should be the sampling rate according to Nyquist theorem?
Assume that an analog audio voice-frequency (VF) telephone signal m(t) occupies a band from 300 Hz to 3000 Hz. The signal is to be converted to a PCM signal for transmission over a digital telephone system. The signal is sampled at a rate 33.3% higher than the Nyquist rate. The maximum acceptable quantizatiorn error is 2% of the peak amplitude of m(t). The quantized samples are binary coded. Find the minimum bandwidth B of a noiseless channel required to transmit...
i) The telephone line has 3400 Hz bandwidth. What is the maximum bit rate we can send using each of the following methods? Assume d=0 and no noise: ASK QPSK 16-QAM 256-QAM ii) Calculate the bit rate for the given baud rate and type of modulation: 1500 baud, FSK 1500 baud, ASK 1500 baud, QPSK 1500 baud, 16-QAM
If the frequency of a signal has a bandwidth of 400 Hz with the lowest frequency at 300 Hz, what should be the sampling rate, according to the Nyquist theorem? a)1400 samples/s b)800 samples/s c)400 samples/s d)600 samples/s
Exit Exam: Data Communications and Computer Networks (CSCI 3150) The layer of the OSI model makes sure the data received at the very end of a transmission is exactly the same as the data originally transmitted. a. application c. transport d. network access b. session between some 62. are represented as continuous waveforms that can be at an infinite number of points given minimum and maximum. a. Analog signals c. Digital data d. Digital pulses b. Digital signals 63. The...
An information signal m(t) has highest frequency of W Hz and is sampled using a periodic pulse train p(t) made up of a rectangular pulse of width 1/8W seconds repeating at the Nyquist rate. a) Expand p(t) using a Fourier series expansion and use it to write the form for the sampled information signal mp(t). Put your result in the simplest possible terms. You may assume that p(t) is symmetric about t = 0. b) How would you recover m(t)...
question 2 Question 2: (10 points) A narrowband signal has a bandwidth of 8 kHz centered on a carrier frequency of 150 kHz. It is proposed to represent this signal in discrete-time form by sampling its in-phase and quadr ature components individually. What is the minimum sampling rate that can be used for this representation? tify you Jus answer. How would you reconstruct the original narrowband sig ampled versions of its in-phase and quadrature components? Question 2: (10 points) A...
a. Describe TWO (2) advantages and TWO (2) disadvantages of digital transmission. (CO1: PO1 - 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 Vp-p 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...