# Homework-1 solution-2021.pdf - ELEC 6099 Wireless...

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ELEC 6099 Wireless Communication and NetworkingHomework 1: SolutionMarch 13, 2021Topic.1 Introduction and Transmission Fundamentals1.1Suppose a transmitter produces 100 W of power.a.Express the transmit power in units of dBm and dBW.b.If the transmitters power is applied to a unit gain antenna with a 900 MHz carrier frequency,what is the received power in dBm at a free space distance of 500 m?c.Repeat (b) for a distance of 5 km.d.Repeat (c) but assume a receiver antenna gain of 2.Solution:
1.2Consider a transmitter transmitting a signal with power of 10 watt over a distance of 1 kmusing a carrier of 2.4 GHz and an antenna with an effective aperture (area) of 1.2 m2.Thesignal is received by an antenna with an effective aperture of 0.2 m2. Given the speed of lightc= 3×108m/s, compute the received signal power in dBm.1
2.1A sine wave is to be used for two different signaling schemes: (a) PSK; (b) QPSK. The du-ration of a signal element is 10-5s.If the received signal is of the following forms(t) =0.01 sin(2π106t+θ

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Term
Fall
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Tags
Eb, Phase shift keying