A small mobile telephony system is installed along a street and the system has six base stations located at the following coordinates, (100,200,300,400,500,600). The channel is assigned to four...

A small mobile telephony system is installed along a street and the system has six base stations located at the following coordinates, (100,200,300,400,500,600). The channel is assigned to four mobiles at the following locations, (50,280,420,545). a) Assuming the path loss exponent is four, determine the link gain matrix. b) Assume all base stations and mobile terminals use the same constant transmission power. The mobiles are connected to the base station with the lowest path loss. Base stations that do not serve any terminals are turned off. Determine the SIRs. c) Assume a power control scheme that maintains a constant received power at the receiver. Determine the transmission powers and the SIR in the base stations and mobiles. d) Compare the results in c) with those using the SIR-balancing power control scheme.