We would like to plan a CDMA cellular system (we are interested in the uplink case). The considered DS-CDMA system has a processing gain (spreading factor) of W Rs = 256, an information data rate of...

We would like to plan a CDMA cellular system (we are interested in the uplink case). The considered DS-CDMA system has a processing gain (spreading factor) of W Rs = 256, an information data rate of Rs = 10 kbps, and employs a perfect constant received power control. The maximum transmitted power of the mobile unit is Pmax = 24 dBm and the noise power spectral density is N0 = −197 dBW/Hz. The propagation path loss is given by PL = 37+40log10(r) dB where r is the distance between the transmitter and the receiver in meters. The required signal-energy-to-noise-power-spectral-density ratio for good signal quality is ξt = 3 dB. a) Assuming hexagonal cells, determine the area capacity if the number of users per cell is M = 30 users/cell. b) Repeat part a) if the number of users per cell is M = 60 users/cell and compare