In a free space wireless propagation environment, transmit power between a transmitter and receiver usually decreases due to free space path loss denoted as L subscript f space(dB) and can be expressed as a function of distance d between transmitter and receiver. Your task is calculate and plot the path loss L subscript f space(dB) for a distance d space equals space 0 space t o space 20 space k m and carrier frequency f subscript c space= 100, 300 and 1000 MHz. Assuming that the transmit power P subscript t space is 50 watts, you can calculate and plot the received power P subscript r spaceas a function of distance d (as given above) for the carrier frequencies given above. You can assume transmit and receive antennas gains are the same, i.e. G subscript t space equals space G subscript r space equals space 0 space d B. Deliverable: You are required to plot path loss L subscript f space(dB) as a function of distance for each carrier frequency, so you will have three curves in the plot. You also need to plot received power P subscript r spaceas a function of distance d for each carrier frequency, so you will have three curves of the received power. You need to submit your executable GNU Octave code along with the plots in a single Word file.