Capacity evaluation of cellular CDMA

The paper is concerned with the capacity of a cellular code division multiple access (CDMA) system in Rayleigh fading with log-normal shadowing. The capacity in terms of the number of users per cell per Hz is shown to be very sensitive to assumed values of various parameters. CDMA capacity is shown to be possibly greater than the proposed TDMA capacity under certain assumptions and vice versa under others. An asymmetry between the uplink and downlink capacities in CDMA is shown based on the finding that the uplink intracell interference power is only half of that in the downlink