Demodulation is the process of separating or recovering the signal *.from the modulated carrier wave True False O ba 4 The ramp function is the integral form * of the step function True O False The signal x(2t) is an example of time * shifting transformation True False O blas 4 In FM modulation the amplitude of the carrier wave is varied in proportion to the amplitude of the information *.signal True False blai 4 mobiles and computer modems are example of transceiver True False

Demodulation is the process of separating or recovering the signal .from the modulated carrier wave True False O ba 4 The ramp function is the integral form of the step function True O False The signal x(2t) is an example of time * shifting transformation True False O blas 4 In FM modulation the amplitude of the carrier wave is varied in proportion to the amplitude of the information *.signal True False blai 4 mobiles and computer modems are example of transceiver True False

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Consider a convolutional code with k = 1, n = 3 and L = 3. The encoder generators aregiven by 91 = [110], 92 = [001] and 93 = [011].Assume the Viterbi algorithm is used for decoding at the receiver and considerthe received bit sequence at the input of the channel decoder being [10 0100110011].Answer the following questions.(a) What is the decoded information bit sequence? (b) What is the value of the cumulative metric (i.e., Hamming distance) of thefinal survivor path of the decoding process?(c) Draw the final survivor path of the trellis for the decoding process.Instruction for Part (c): An example of drawing a path in the trellis is shown below.
In this project, you are required to use MATLAB/Octave/SCILAB software to simulate BPSK modulation waveform. PSK Modulation Phase Shift Keying (PSK) is the digital modulation technique in which the phase of the carrier signal is changed by varying the sine and cosine inputs at a particular time. PSK is of two types, depending upon the phases the signal gets shifted: - Binary Phase Shift Keying: This is also called as 2-phase PSK or Phase Reversal Keying. In this technique, the sine wave carrier takes two phase reversals such as 0° and 180°. - Quadrature Phase Shift Keying: This is the phase shift keying technique, in which the sine wave carrier takes four phase reversals such as 0°, 90°, 180°, and 270°. BPSK ModulatorThe block diagram of Binary Phase Shift Keying consists of the balance modulator which has the carrier sine wave as one input and the binary sequence as the other input. Following is the diagrammatic representation. Please show all the steps and explaination.
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Dnt give existing Answers its wrong if I got wrong Answers and plagarism will be downvote Consider a non-interlaced raster monitor with a resolution of n by m (m scan lines and n pixels per scan line), a refresh rate of r frames per second, a horizontal retrace time of thorizand vertical retrace time of tvert What is the fraction of total refresh time per frame spent in retrace of the electron beam?
#45.! Consider the following bit stream-a. 00000000 b. 11111111 c. 01010101 d. 00110011 Draw the graph of the i. Manchester using each of the given data streams, assuming that the last signal level has been positive. From thegraphs, guess the bandwidth for this scheme using the average number of changes in the signal level... .
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The basic principle of differential coding techniques like Differentil PCM (DPCM) and Adaptive Differential PCM (ADPCM) is to transmit information _____. A. about the changes in sample value B. approximation to the input signal C. using artificial signal D. of the actual sample values themselves
A digital radio communication system receives a signal with signal power Sof 3 µW, and noise level of 200 nW, on a radio channel with upper cut-offfrequency of 2.42 GHz, and a lower cut-of frequency of 2.40GHz. What is the maximum information bit rate (net bit rate exclusive of forward error correction codes) that can be supported by this line, in theory, according to ShannonHartley?
Draw the graph of the NRZ-L scheme using each of the following data streams,assuming that the last signa11evel has been positive. From the graphs, guess thebandwidth for this scheme using the average number of changes in the signal level.Compare your guess with the corresp.onding entry in Table 4.1.a. 00000000b. 11111111c. 01010101d. 00110011
Please explain in details the following portion: In summary, we present a more general form of GHZ-like states channel and an explicit constructure of the protocol to faithfully and deterministically teleport an arbitrary N-qubit state. Only N three-qubit von-Neumann projective measurements by the sender, N single-qubit transformations by the receiver and 2N-bit classical message between them are needed. The strict proof through mathematical induction is also presented and the rule for the receiver to reconstruct the desired state is explicitly derived. Though the teleportation channel used in the protocol is formed by N sets of |η+>, the results will be analogous for other channels formed by N sets of |η−>, |ψ+> or |ψ−>. Security and benchmarks to realize our protocol are discussed. And it is possible to transform our protocol to a N-qubit perfect controlled teleportation scheme from the controller’s point of view. Also please explain whether 2, 3 or 5 qubits are being…