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The power loss for indoor communications is modeled with the following equation (see notes) If loss...
Problem 3 (25 points) Consider the set of empirical measurements of Pr/Pt given in the table syst...
Problem 3 (25 points) Consider the set of empirical measurements of Pr/Pt given in the table system at 2.5 G㎐ below for an indoor a) Find th e path loss exponent (y) that minimizes the MSE between the simplified and the empirical dB power measurements, assuming that do-1 m and K is determined from the free space path loss formula at this do. b) Find the received power at 50 m for the simplified path loss model with this path...
1. What is “LOS"? a. LOS is 2. What is WSN? a. Wireless Sensor Networks are...
1. What is “LOS"? a. LOS is 2. What is WSN? a. Wireless Sensor Networks are 3. Visual LOS implies RF LOS a. True or False 4. A 1-km 2.4 GHz link has two antennas that are 2m above ground. Do we have LOS? a. Yeyor No 5. In free spate RF power loss ~1/R^2 but when the transmitter and receiver is close to the ground, the loss can be -1/R14 a. True or False 6. What is RSSI? How...
As a communications system engineer, you are asked to setup a communication system to serve a distance of 100m using an access point transmitting signals with power 20dBm at the frequency 2.4GHz. The...
As a communications system engineer, you are asked to setup a communication system to serve a distance of 100m using an access point transmitting signals with power 20dBm at the frequency 2.4GHz. The antennas used at the transmitter and receiver side have the gains shown in the picture below. The coaxial cables used to interface the systems to the antennas have losses shown in the picture below What is the received signal power in dBm at the input of the...
Question1. A U.S. or Canadian broadcasting licence for a (large) FM radio station stipulates a maximum...
Question1. A U.S. or Canadian broadcasting licence for a (large) FM radio station stipulates a maximum broadcast power of 100 kW. At any distance from the broadcast antenna the intensity doesn’t quite follow the inverse square law that is described for spherical waves in the videos lectures, because of reflection of the signal off of the ground. But the inverse square law is not a bad approximation, so let’s use it a) Find the intensity of the radio signal from...
7) If f1= 5MHz and f2=7 MHz, find: a. 2nd order harmonics. b. 3rd order harmonics....
7) If f1= 5MHz and f2=7 MHz, find: a. 2nd order harmonics. b. 3rd order harmonics. c. 3rd order inter-modulation products (IMD) 8) In a superheterodyne receiver, the input RF frequency is 1 GHz. Find the IF frequency if the local oscillator frequency is 950 MHz? 9) Rank from 1 to 3 for linearity and efficiency with 1 as the most linear and most efficient. Class of amplifier Linearity Efficiency Class A Class B Class C 10) Which of the...
8. Your nearsighted brother has a far point of 4 m and he wants to see...
8. Your nearsighted brother has a far point of 4 m and he wants to see an object 15 m away clearly Assume he will wear his glasses 2 cm in front of his eyes. What is the focal distance (in meters) of the glasses he needs? Hint: Draw a diagram of your brother, the glasses, the object and the image. Use the diagram to figure out whether the glasses have to be diverging or converging. 9. Consider question 8....
An AM receiver is tuned to broadcast station at 600 kHz. Calculate the image rejection in dB, assuming that the input f...
An AM receiver is tuned to broadcast station at 600 kHz. Calculate the image rejection in dB, assuming that the input filter consist of one tuned circuit with a Q of 40? An SSB system transmit a peak envelope power of 100 W into a 75 ohms load. The carrier signal is modulated by two tones, with frequencies 2 kHz and 3 kHz with equal magnitude and only the lower sideband is transmitted with a suppressed carrier. Determine the average...
An AM receiver is tuned to broadcast station at 600 kHz. Calculate the image rejection in...
An AM receiver is tuned to broadcast station at 600 kHz. Calculate the image rejection in dB, assuming that the input filter consist of one tuned circuit with a Q of 40? An SSB system transmit a peak envelope power of 100 W into a 75 ohms load. The carrier signal is modulated by two tones, with frequencies 2 kHz and 3 kHz with equal magnitude and only the lower sideband is transmitted with a suppressed carrier. Determine the average...
The M/M/m/m Server Loss System: Consider the queuing system given by the following state- transition diagram. Each arri...
The M/M/m/m Server Loss System: Consider the queuing system
given by the following state- transition diagram.
Each arriving customer is given a private server, but there is a
maximum of m servers available. If a customer arrives when all m
servers are busy, the customer is denied service and is turned
away. The arrival rate is Poisson with parameter λ and the service
rate is kμ with 1 ≤ k ≤ m as shown. Use the results obtained in Set...
Designing a High speed Wireless Data Link Line of Sight Link Budget Analysis Several major factors that can impact...
Designing a High speed Wireless Data Link Line of Sight Link Budget Analysis Several major factors that can impact the performance of a radio system are Available/permitted output power e Bandwidth, . Receiver sensitivity Antenna gains In this case study, the students will be required to calculate the link budget for a LOS Wireless link. Read through the following to understand some of the aspects and elements that need to be considered when calculating a Link Budget. If the estimated/calculated...
Problem 3 (25 points) Consider the set of empirical measurements of Pr/Pt given in the table system at 2.5 G㎐ below for an indoor a) Find th e path loss exponent (y) that minimizes the MSE between the simplified and the empirical dB power measurements, assuming that do-1 m and K is determined from the free space path loss formula at this do. b) Find the received power at 50 m for the simplified path loss model with this path...
1. What is “LOS"? a. LOS is 2. What is WSN? a. Wireless Sensor Networks are 3. Visual LOS implies RF LOS a. True or False 4. A 1-km 2.4 GHz link has two antennas that are 2m above ground. Do we have LOS? a. Yeyor No 5. In free spate RF power loss ~1/R^2 but when the transmitter and receiver is close to the ground, the loss can be -1/R14 a. True or False 6. What is RSSI? How...
As a communications system engineer, you are asked to setup a communication system to serve a distance of 100m using an access point transmitting signals with power 20dBm at the frequency 2.4GHz. The antennas used at the transmitter and receiver side have the gains shown in the picture below. The coaxial cables used to interface the systems to the antennas have losses shown in the picture below What is the received signal power in dBm at the input of the...
8. Your nearsighted brother has a far point of 4 m and he wants to see an object 15 m away clearly Assume he will wear his glasses 2 cm in front of his eyes. What is the focal distance (in meters) of the glasses he needs? Hint: Draw a diagram of your brother, the glasses, the object and the image. Use the diagram to figure out whether the glasses have to be diverging or converging. 9. Consider question 8....
The M/M/m/m Server Loss System: Consider the queuing system
given by the following state- transition diagram.
Each arriving customer is given a private server, but there is a
maximum of m servers available. If a customer arrives when all m
servers are busy, the customer is denied service and is turned
away. The arrival rate is Poisson with parameter λ and the service
rate is kμ with 1 ≤ k ≤ m as shown. Use the results obtained in Set...
Designing a High speed Wireless Data Link Line of Sight Link Budget Analysis Several major factors that can impact the performance of a radio system are Available/permitted output power e Bandwidth, . Receiver sensitivity Antenna gains In this case study, the students will be required to calculate the link budget for a LOS Wireless link. Read through the following to understand some of the aspects and elements that need to be considered when calculating a Link Budget. If the estimated/calculated...
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