Home / Questions / Perform the calculations for the forward link of Example 4 8 also for operation at 1900 MH...
Perform the calculations for the forward link of Example 4-8 also for operation at 1900 MHz. Assume the base station transmits 20 W and the handheld terminal has an antenna temperature of 290 K and a receiver input noise temperature of 1500 K. Assume the transmit antenna is impedance matched to its transmission line.
EXAMPLE 4-8
A Cell Phone Reverse Link Here we consider a typical cell phone reverse link (uplink) from a handset to a base station with a sector antenna. The handset transmits at 1900 MHz with 300 mW of power into a -1-dB gain, vertically-polarized omnidirectional antenna with a VSWR of 3. The antenna on a base station tower 8 km away has a slant 45 linear polarization, a 6 elevation beamwidth, and a 90 azimuth beamwidth. It is desired to calculate the power available from the receive antenna. First, the base station receive antenna gain is found using (4-57) to be Gr ¼ 16:8 dB and is impedance matched. The impedance mismatch loss at the transmitter from (4-43) in (4-41) is q ¼ 0:75 and the polarization mismatch loss from (4-47) is p = 0:5 Using a 1/R4 distance variation, which is typical for many propagation scenarios.
Jun 22 2020 View more View Less
break-even quantityFLEXO markets shoes under its brand name Recently it developed a new productThe investment in the product was $15 million The company expected to dep...
Mar 22 2020Describe the setting of A Lesson Before Dying. Be sure to include the social and racial aspects that operate in chapters 1 through 16. 2. Compare and contrast Grants rel...
Mar 13 2020Show transcribed image text The above figure represents Tony's Pizza Parlor, a firm in monopolislic competition. What quantity will be produced? What price will be charge...
Apr 30 2020Should organizations work to create jobs that are satisfying to individual employees?
Aug 26 2020A perpetuity pays 1 at the end of the first two years (i.e. at time t=1 and t=2), pays 2 at the end of the second two years (i.e. at time t=3 and t=4), 3 at the end of th...
Aug 28 2020Are there ever circumstances in which corporate spying is ethical? If so, what are they?
Jul 10 2020Project Name: StudentPrerequisite Subjects Management SystemDescription:This project requires the use of link listor tree to store different courses and their prerequisit...
Apr 09 2020With a Mean of $1317, standard deviation of $324.What is the probability that a randomly selected auto insurance rate in the US would be greater than $1750?What percentag...
Apr 04 2020David Christopher is an orthopedic surgeon who specializes in three types of surgery—hip, knee, and ankle replacements. The surgery mix is 40 percent hip replacement, 50 ...
May 01 2020Herb packs fish in 500-g cans on a processing line. He is paid $8.25 per hour plus $0.18 per kilogram for production in excess of 500 kg in a 7.5-hour shift. How much wil...
Mar 28 2020