Performance of power-controlled wideband terrestrial digital communication

Performance of a wideband multipath-fading terrestrial digital coded communication system is treated. The analysis has applications to a cellular system employing direct sequence spread spectrum CDMA with M-ary orthogonal modulation on the many-to-one reverse (user-to-base station) link. For these links, pqwer control of each multiple access user by the cell base station is a critically important feature. This is implemented by measuring the power received at the base station for each user and sending a command to either raise or lower reverse link transmitted power by a fixed amount. Assuming perfect interleaving, the effect of the power-control accuracy on the system performance is assessed.