SLOTTED MODE CODE USAGE IN A CELLULAR COMMUNICATIONS SYSTEM

摘要

The downlink channelization code limitation problem encountered in spread spectrum or CDMA cellular systems is resolved by using codes from a different, non--orthogonal code set when operating in the slotted mode (108). The non- orthogonal code sets can be constructed by using the same channelization code tree, but applying a different scrambling code (112, 116).