Capacity for cellular CDMA PCS's in Nakagami fading log-normal shadowing channels
Mohamed Mokhtar, Subhash Chandra Gupta · 2003
Spread-spectrum DS/CDMA is a powerful technique for implementing PCS. However, DC/CDMA suffers from the 'near-far' problem, and hence, power control for the signals involved is required. A model for DS/CDMA PCS is studied under the effect of Nakagami fading and log-normal shadowing. The interference from neighboring cells is studied and obtained. The capacity of the system is then evaluated as a function of the maximum number of active users within the cell, for different cases of the fading channel parameters. The capacity improvement through applying a suitable power control scheme is obtained and compared with the case when no power control is used.>