An absolute measure of power is the dBm scale, in which power is specified in decibels relative to one milliwatt. Specifically,
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Engineering Electromagnetics
- The frequency deviation is the amount of change in carrier frequency produced by the modulating signal. Select one: O True O Falsearrow_forwardA 16-PSK system with a carrier power of - 125 dB, a noise power of 1 x 10^-15 W and operating bandwidth of 500 MHz. Determine the following parameters and choose the correct answer, otherwise choose NOC. * - 120.0 - 243.0 - 5.0 - 95.0 1.0 - 218.0 NOC Eb in dBJ Noise Power in dBm Carrier Power in dBm C/N in dB No in dBm Eb/No in dBarrow_forwardA sinusoidal modulating waveform of amplitude 5v and a frequency of 2KHZ is applied to FM generator, which has a frequency sensitivity of 40Hz/Volt. Evalulate: Frequency deviation, modulation index, Bandwidtharrow_forward
- State and explain Carson's bandwidth formula.arrow_forwardAn LTI system has the following frequency response: H(w) = 1 – e-j2w Let y[n] be the output sequence and x[n] be the input sequence of the system. (i) Analyze the causality and stability of the LTI system if a zero at z = 0.5 and a pole at z = 0.8 + j0.8 are introduced to the LTI system. Determine the input sequence x[n] to the LTI system that produces the output sequence y[n] = 8[n]. (ii) [u]garrow_forwardAn input power of P = 3 W is fed to a 75 km conductor. A repeater is present at 40 km from transmitter and has a gain of 70 dB. The conductor has a of 3 dB/km. The power received at receiver side is: (a) -140.23 dBm (b) -120.23 dBm (c)-110.23 dBm (d) -150.23 dBmarrow_forward
- We want to send the message signal m(t) = 2 sin(20nt) - 8 cos(140nt) through an AM transmitter with a carrier signal c(t) = cos(2000nt). A) Find the frequency spectrum of the modulated signal and determine the bandwidth required to send the signal. B) Get the maximum possible modulation index (to achieve maximum power efficiency)arrow_forward2. Find the real and imaginary part of the total equivalent circuit impedance at the signal frequency of 1 MHz (Unit: Ohm)arrow_forwardYou are required to design the Transmitter part of a digital communication system for transmitting an analog signal over a channel that can support a bandwidth of up to 1KH2 and also an SNR=30DB will be a good signal to noise ratio to work on this channel. Analog Input TX Channel RX Digital Analog Outpu" Signalling Keep in mind that the Transmitter should be composed of a PCM system and the system that generates the physical signals to be transmitted. Calculate the maximum Spectral Efficiency and continue your design with the max Data Rate (R=C) resulting with the max spectral efficiency. Also state how many levels should your M-ary (Multilevel) signal have in order to obtain this efficiency. Design the PCM system that will transform the input analog signal to digital and calculate the sampling period of the PCM system to obtain the bitrate necessary that is calculated. Please also state what should the Bandwidth of the Analog input signal be to be able to use this communication…arrow_forward
- What is the value of carrier frequency in the following equation for the FM signal? v(t)= 5 cos(6600t+ 12sin2500t). * 1150 Hz 2500 Hz 6600 Hz 1050 Hzarrow_forwardQuestion: The maximum deviation allowed in an FM broadcast system is 75 kHz, If the modulating signal is a single-tone sinusoid of 8 kHz, determine the bandwidth of FM signal. What will be the bandwidth when modulating signal amplitude is doubled?arrow_forward1. What is the advantage of angle modulation for (noise and interference), the bandwidth of transmission and the average power of the transmission? comparison with the amplitude modulationarrow_forward
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