Framework for power and activity factor allocation in a multiclass CDMA system

Xinzhou Wu; Rayadurgam Srikant

doi:10.1117/12.434390

25 July 2001 Framework for power and activity factor allocation in a multiclass CDMA system

Xinzhou Wu, Rayadurgam Srikant

Proceedings Volume 4526, Scalability and Traffic Control in IP Networks; (2001) https://doi.org/10.1117/12.434390
Event: ITCom 2001: International Symposium on the Convergence of IT and Communications, 2001, Denver, CO, United States

Abstract

We consider a multimedia CDMA uplink where there are multiple classes of users with different Quality-of-Service (QoS) requirements. Each user is modeled as an ON-OFF source, where in the ON state, the user transmits a fixed number of bits in each time slot and in the OFF state, the user is silent. The probability of being in the ON state, known as the activity factor, could be different for different users. Assuming a constant channel gain, we first characterize the set of transmit power levels, activity factors and number of users in each class that can be supported by a system with a given spreading gain under the constraint that each user's QoS requirement must be met. Using this characterization, we then present a utility function-based algorithm for choosing the activity factors of elastic users in the network.

Citation Download Citation

Xinzhou Wu and Rayadurgam Srikant "Framework for power and activity factor allocation in a multiclass CDMA system", Proc. SPIE 4526, Scalability and Traffic Control in IP Networks, (25 July 2001); https://doi.org/10.1117/12.434390

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