an Problem 3: [6 Marks] The following figure shows the radio communication link between a transmitter and a receiver. Ls

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An Problem 3 6 Marks The Following Figure Shows The Radio Communication Link Between A Transmitter And A Receiver Ls 1 (119.3 KiB) Viewed 69 times

an Problem 3: [6 Marks] The following figure shows the radio communication link between a transmitter and a receiver. Ls PN Receiver Transmitter Demodulator LE d L. = 20dB The transmitted signal is subject to attenuation on the radio channel. This attenuation is directly related to the distance d (in meters) between transmitter and receiver. The relationship is given as follows LA = 20dB + 10 log10 (d/m)") dB. At the receiver, the received signal is subject to additive noise (with power Pn), is amplified and reaches the demodulator which tries to reconstruct the transmitted information from the received signal. 1. Knowing that the transmitter uses Ps = 57 dBm for transmission, Calculate the transmit power Ps (in Watt)?[2] = 2. Calculate the received power level Lo at the input of the demodulator if the transmit power level is Ps 13 dB, Pn = 0 dB, and the receiver is located at a distance of d = 250 m from the transmitter? [4] =