Use the Okumura–Hata model to compute the path loss in dB for a suburban environment, with...
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Path Loss(db) = Power Transmitted (Pt) - Power Recieved(Pr)
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Use the Okumura–Hata model to compute the path loss in dB
for a suburban environment, with...
what is Matlab code to plot the path loss from 0 to 10 km using Hata...
what is Matlab code to plot the path loss from 0 to 10 km using Hata model, assuming fc= 900 MHz in an urban environment, mobile antenna height is 1.5 m, and base station antenna height are 30 and 200 meter, respectively.
Use Hata model, assuming that carrier frequency is 900 MHz, mobile antenna height is 1.5 m,...
Use Hata model, assuming that carrier frequency is 900 MHz, mobile antenna height is 1.5 m, and base station antenna height is 30 meter, determine the required transmit power level to obtain a 5 km cell radius when the receiver sensitivity is −104 dBm
Propagation measurements indicate that the median path loss at 420 MHz in a midsize city can be m...
Propagation measurements indicate that the median path loss at 420 MHz in a midsize city can be modeled with n = 2.9 with a fixed loss (b 0) of 20 dB. Assuming a cell phone receiver sensitivity of -90 dBm, what transmitter power is required to service a circular area of radius 15 km? Now assume that in the same city, the deviation about the median path loss was estimated to be s = 8 dB. Assuming a lognormal shadowing...
5. Measurements have shown that the path loss exponent of an outdoor environment is equal to 3.2. The required minimum...
5. Measurements have shown that the path loss exponent of an outdoor environment is equal to 3.2. The required minimum SIR for the AMPS systems (first generation cellular system with analog technology) is 18 dB (i) Find the smallest number of channel subsets we can use when deploying AMPS in such environment. (ii) If the total number of channels that the available spectrum can support is 1,200, how many channels each cell can have with equal allocation? ( iii) What...
Suppose you have the following optical network: - There are six connector or splice joints between the end to end points, with a loss of 0.04 dB each - The fiber has a 0.4 dB/km attenuation. - Each o...
Suppose you have the following optical network:
- There are six connector or splice joints between the end to end
points, with a loss of 0.04 dB each - The fiber has a 0.4 dB/km
attenuation.
- Each optical splitter has 1.5 dB insertion loss on top of the
power splitting loss.
a) What is the insertion loss of each splitter? (1 Marks)
b) What is the total loss between point A to point B, C, D and E?
(2...
What's the energy of a photon with frequency of 317 Hz? –19 A. 1.62 × 10...
What's the energy of a photon with frequency of 317 Hz? –19 A. 1.62 × 10 W –19 B. 2.88 × 10 W –19 C. 1.36 × 10 W –19 D. 2.10 × 10 W 2. You need to splice two fibers. The transmitting core has a diameter of 75 μm, and the receiving core has a diameter of 62.5 μm. Calculate the power loss due to core diameter mismatch in dB. A. 3.06 dB B. 3.57 dB C. 1.25...
1. If the voltage gain is 2000, the decibel voltage gain is a. 40 dB c....
1. If the voltage gain is 2000, the decibel voltage gain is a. 40 dB c. 66 dB b. 46 dB d. 86 dB 2. The input power to a device is 10.000 W. The output power is 500 W. The power gain (GdB) in decibels is a. -13 dB b. -26 dB c. 56 dB d. 18 dB 3. Which of the following is an advantage of using dB representations of gain values? (a) Positive and negative dB values...
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...
answer the question and write the formula Decide the Rician factor K [dB] for the LOS...
answer the question and write the formula
Decide the Rician factor K [dB] for the LOS power of 10 [m W] and diffuse components power of I [mW1. (2) 1. 10 l k 1699 17 2. Assume your car, with Rx antenna perfectly aligned with base station Tx antenna, is moving with speed ‘v' of 60 Km/hour. Assuming carrier frequency of 100 MHz, find the Doppler frequency in [Hz]. Use a-(va) Cos θ and unit of [m] for' λ, and...
2. The electric vehicle Tesla Model S has a drag coefficient of 0.24, a mass of 2100 kg, and a frontal area of 2.4 m2....
2. The electric vehicle Tesla Model S has a drag coefficient of 0.24, a mass of 2100 kg, and a frontal area of 2.4 m2. The coefficient of rolling resistance of its tires is 0.01. Recall the density of air at sea level is 1.3 kg/m3. How much kinetic energy is required to overcome rolling resistance and air resistance (drag) at Autobahn speeds of 180 km/hr for a 200 km trip? How much useful energy (in MJ) and money (in...
5. Measurements have shown that the path loss exponent of an outdoor environment is equal to 3.2. The required minimum SIR for the AMPS systems (first generation cellular system with analog technology) is 18 dB (i) Find the smallest number of channel subsets we can use when deploying AMPS in such environment. (ii) If the total number of channels that the available spectrum can support is 1,200, how many channels each cell can have with equal allocation? ( iii) What...
Suppose you have the following optical network:
- There are six connector or splice joints between the end to end
points, with a loss of 0.04 dB each - The fiber has a 0.4 dB/km
attenuation.
- Each optical splitter has 1.5 dB insertion loss on top of the
power splitting loss.
a) What is the insertion loss of each splitter? (1 Marks)
b) What is the total loss between point A to point B, C, D and E?
(2...
1. If the voltage gain is 2000, the decibel voltage gain is a. 40 dB c. 66 dB b. 46 dB d. 86 dB 2. The input power to a device is 10.000 W. The output power is 500 W. The power gain (GdB) in decibels is a. -13 dB b. -26 dB c. 56 dB d. 18 dB 3. Which of the following is an advantage of using dB representations of gain values? (a) Positive and negative dB values...
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...
answer the question and write the formula
Decide the Rician factor K [dB] for the LOS power of 10 [m W] and diffuse components power of I [mW1. (2) 1. 10 l k 1699 17 2. Assume your car, with Rx antenna perfectly aligned with base station Tx antenna, is moving with speed ‘v' of 60 Km/hour. Assuming carrier frequency of 100 MHz, find the Doppler frequency in [Hz]. Use a-(va) Cos θ and unit of [m] for' λ, and...
2. The electric vehicle Tesla Model S has a drag coefficient of 0.24, a mass of 2100 kg, and a frontal area of 2.4 m2. The coefficient of rolling resistance of its tires is 0.01. Recall the density of air at sea level is 1.3 kg/m3. How much kinetic energy is required to overcome rolling resistance and air resistance (drag) at Autobahn speeds of 180 km/hr for a 200 km trip? How much useful energy (in MJ) and money (in...
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