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8 8.6-4 For a DSB-SC system with a channel noise PSD of Sn() 10-12 and a baseband signal of bandw...
Q1. A DSB-SC signal is transmitted over a noisy channel with power spectral density of noise...
Q1. A DSB-SC signal is transmitted over a noisy channel with power spectral density of noise given as, 0, otherwise with B-200 kHz and N 10W Hz. The message bandwidth is 10 kHz and its average power is 10 W. Assume A,-1, 100kHz, and the channel attenuates signal power by a factor of 1000 (-30 dB). Assume that a suitable band-pass filter is used at the receiver to limit out-of-band noise. (a) Determine the average signal power at the receiver...
Exercise 4: Calculate the required transmitter power Sr of DSC-SC, SSB, and conventional AM (DSC+...
comms systems theory:
Exercise 4: Calculate the required transmitter power Sr of DSC-SC, SSB, and conventional AM (DSC+carrier) systems for transmitting an audio signal which has a bandwidth of 10 kHz with an output SNR of 40 dB. Assume that the channel introduces a 30 dB power loss and the channel noise is white noise with a power spectral density of η/2-10-9 W/Hz. Assume μ2Sm-0.5 for the conventional AM system.
Exercise 4: Calculate the required transmitter power Sr of DSC-SC,...
The following is the channel frequency assignment for a 12-channel AM radio system: (c) Channel No Fcy 1240 kHz 1370 kHz 500 kHz 1630 kHz Channel No.Frequency 2280 kHz 2410 kHz 2540 kHz 2670 kHz Chan...
The following is the channel frequency assignment for a 12-channel AM radio system: (c) Channel No Fcy 1240 kHz 1370 kHz 500 kHz 1630 kHz Channel No.Frequency 2280 kHz 2410 kHz 2540 kHz 2670 kHz Channel No. Freqency 1760 kHz 1890 kHz 2020 kHz 2150 kHz 10 2 12 When the AM superheterodyne radio receiver is tuned to Channel 10, in addition to the signal carried on Channel 10, you can also hear a weak signal carried on Channel3 (i)...
A communication system operates in the presence of white noise with a two-sided power spectral density...
A communication system operates in the presence of white noise with a two-sided power spectral density Sn(w)=10^-14 W/Hz and with a path loss of 20 dB. Calculate the minimum required bandwidth and the minimum required power of the transmitter for a 10 kHz sinusoidal input and a 40 dB output signal to noise ratio if the modulation is a) DSB-SC b) SSB-SC c) FM with Af = 10 kHz
In a broadcasting communication system, the transmitter power is 40 KW, the channel attenuation is 80...
In a broadcasting communication system, the transmitter power is 40 KW, the channel attenuation is 80 dB, and the noise power spectral density is 10-10 W/Hz. The message signal has a bandwidth of 104 Hz and a normalized message signal power of 0.2 Determine the output SNR if the modulation format of the signal is: (a) DSB-SC (b) SSB-SC (c) Conventional AM with a modulation index of 0.85. (d) FM with a frequency modulation index of 3
In a broadcasting system, the transmitted signal power is 50 kW, the attenuation of the signal...
In a broadcasting system, the transmitted signal power is 50 kW, the attenuation of the signal is 155 dB (in passing from the input to the transmitting antenna to the output of the receiving antenna), and the available mean power-spectral density of the noise in the system from all sources has a mean power spectral density level 10-18 W/Hz (as if added at the receiving antenna's output). The bandwidth of the message signal m(t) is 8 KHz. Determine the output...
The effective noise temperature of a radio receiving system before the demodulator is 800K. If the...
The effective noise temperature of a radio receiving system before the demodulator is 800K. If the modulation employed is DSB-SC, what is the required received power level if an 85 dB SNR at the demodulator output is required. Assume the bandwidth of m(t) is 7 kHz. 4.
The input r(t) to a DSBSC receiver is a DSB signal s(t) = A m(t)cos (21fet)...
The input r(t) to a DSBSC receiver is a DSB signal s(t) = A m(t)cos (21fet) corrupted by additive white Gaussian noise with two-sided power spectral density N,/2, where No = 10-12 W/Hz, m(t) is a message signal bandlimited to 10 kHz. Average power of m(t) is Pm = 4 W and Ac = 2 mV. The block diagram of the receiver is shown below. Note that the receiver has filters which have slightly larger bandwidths than a typical DSB...
4) The average noise power per unit bandwidth measured at the front end of an AM...
4) The average noise power per unit bandwidth measured at the front end of an AM receiver is 10-watt/Hz. The modulating signal is sinusoidal, with a carrier power of 80 watts and a sideband power of 10 watts per sideband. The message bandwidth is 4 kHz. a) Assuming the use of an envelope detector in the receiver, determine the output signal-to-noise ratio of the system. b) By how many decibels is this system inferior to a DSB-SC modulation system?
Consider a communication system with a transmission loss of 100 dB and a noise spectral density...
Consider a communication system with a transmission loss of 100 dB and a noise spectral density of 104 W/Hz at the receiver input. If the average message power is 1W, and the bandwidth is 10 kHz, determine the average transmitted power (in kW) required to achieve a post-detection SNR of 40 dB or better when the modulation is: (a) AM DSB-TC with ka-1; and0.1 v. (b) FM w .0000 Hz/v ith kf-10,000, 50,000, and 10
Q1. A DSB-SC signal is transmitted over a noisy channel with power spectral density of noise given as, 0, otherwise with B-200 kHz and N 10W Hz. The message bandwidth is 10 kHz and its average power is 10 W. Assume A,-1, 100kHz, and the channel attenuates signal power by a factor of 1000 (-30 dB). Assume that a suitable band-pass filter is used at the receiver to limit out-of-band noise. (a) Determine the average signal power at the receiver...
comms systems theory:
Exercise 4: Calculate the required transmitter power Sr of DSC-SC, SSB, and conventional AM (DSC+carrier) systems for transmitting an audio signal which has a bandwidth of 10 kHz with an output SNR of 40 dB. Assume that the channel introduces a 30 dB power loss and the channel noise is white noise with a power spectral density of η/2-10-9 W/Hz. Assume μ2Sm-0.5 for the conventional AM system.
Exercise 4: Calculate the required transmitter power Sr of DSC-SC,...
The following is the channel frequency assignment for a 12-channel AM radio system: (c) Channel No Fcy 1240 kHz 1370 kHz 500 kHz 1630 kHz Channel No.Frequency 2280 kHz 2410 kHz 2540 kHz 2670 kHz Channel No. Freqency 1760 kHz 1890 kHz 2020 kHz 2150 kHz 10 2 12 When the AM superheterodyne radio receiver is tuned to Channel 10, in addition to the signal carried on Channel 10, you can also hear a weak signal carried on Channel3 (i)...
A communication system operates in the presence of white noise with a two-sided power spectral density Sn(w)=10^-14 W/Hz and with a path loss of 20 dB. Calculate the minimum required bandwidth and the minimum required power of the transmitter for a 10 kHz sinusoidal input and a 40 dB output signal to noise ratio if the modulation is a) DSB-SC b) SSB-SC c) FM with Af = 10 kHz
In a broadcasting communication system, the transmitter power is 40 KW, the channel attenuation is 80 dB, and the noise power spectral density is 10-10 W/Hz. The message signal has a bandwidth of 104 Hz and a normalized message signal power of 0.2 Determine the output SNR if the modulation format of the signal is: (a) DSB-SC (b) SSB-SC (c) Conventional AM with a modulation index of 0.85. (d) FM with a frequency modulation index of 3
In a broadcasting system, the transmitted signal power is 50 kW, the attenuation of the signal is 155 dB (in passing from the input to the transmitting antenna to the output of the receiving antenna), and the available mean power-spectral density of the noise in the system from all sources has a mean power spectral density level 10-18 W/Hz (as if added at the receiving antenna's output). The bandwidth of the message signal m(t) is 8 KHz. Determine the output...
The effective noise temperature of a radio receiving system before the demodulator is 800K. If the modulation employed is DSB-SC, what is the required received power level if an 85 dB SNR at the demodulator output is required. Assume the bandwidth of m(t) is 7 kHz. 4.
The input r(t) to a DSBSC receiver is a DSB signal s(t) = A m(t)cos (21fet) corrupted by additive white Gaussian noise with two-sided power spectral density N,/2, where No = 10-12 W/Hz, m(t) is a message signal bandlimited to 10 kHz. Average power of m(t) is Pm = 4 W and Ac = 2 mV. The block diagram of the receiver is shown below. Note that the receiver has filters which have slightly larger bandwidths than a typical DSB...
4) The average noise power per unit bandwidth measured at the front end of an AM receiver is 10-watt/Hz. The modulating signal is sinusoidal, with a carrier power of 80 watts and a sideband power of 10 watts per sideband. The message bandwidth is 4 kHz. a) Assuming the use of an envelope detector in the receiver, determine the output signal-to-noise ratio of the system. b) By how many decibels is this system inferior to a DSB-SC modulation system?
Consider a communication system with a transmission loss of 100 dB and a noise spectral density of 104 W/Hz at the receiver input. If the average message power is 1W, and the bandwidth is 10 kHz, determine the average transmitted power (in kW) required to achieve a post-detection SNR of 40 dB or better when the modulation is: (a) AM DSB-TC with ka-1; and0.1 v. (b) FM w .0000 Hz/v ith kf-10,000, 50,000, and 10
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