Allocation of DS - CDMA Parameters to AchieveMultiple Rates and Qualities of

{ We consider a packet data DS-CDMA network which supports multiple traac classes. Each traac class has a diierent requirement on information rate and performance. Given suucient bandwidth, these requirements can be satis-ed by an appropriate assignment of power and processing gain to the users in each class. For a single class of data users we examine the relationship between delay and processing gain. We show that lowering the processing gain below a threshold can produce multiple operating points, which correspond to diierent delays. Two classes of traac are then considered corresponding to voice and data, and the delay of the data users is examined as a function of powers and processing gains assigned to both classes.