Title :
Power control based admission algorithms for maximizing throughput in DS-CDMA networks with multimedia traffic
Author :
Ayyagari, Deepak ; Ephremides, Anthony
Author_Institution :
GTE Labs. Inc., Waltham, MA, USA
Abstract :
The problem of jointly controlling the data rates and transmit powers of users, so as to maximize throughput in cellular DS-CDMA networks is addressed. The multicode (MC-CDMA) system, where the processing gain of each code is fixed and high rate users use multiple codes for transmission, and the variable gain (VG-CDMA) architectures are considered. The throughout maximization problem is formulated as a classical optimization problem, modeling the constraints arising from the data rate requirements and power budgets. Optimal strategies to maximize throughput in both systems are derived. While the MC-CDMA system has a simple optimal rate-power allocation algorithm, the VG-CDMA system has a more complex solution
Keywords :
cellular radio; code division multiple access; multimedia communication; optimisation; power control; radio networks; radiofrequency interference; spread spectrum communication; telecommunication congestion control; telecommunication traffic; MC-CDMA system; VG-CDMA system; cellular DS-CDMA networks; constraints modeling; data rate control; interference ratio; multicode system; multimedia traffic; multiple codes; optimal rate-power allocation algorithm; optimization problem; power budgets; power control based admission algorithms; processing gain; throughput maximization; transmit power control; variable gain architectures; Admission control; Bandwidth; Constraint optimization; Intelligent networks; Interference; Multiaccess communication; Multicarrier code division multiple access; Power control; Power system modeling; Throughput;
Conference_Titel :
Wireless Communications and Networking Conference, 1999. WCNC. 1999 IEEE
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-5668-3
DOI :
10.1109/WCNC.1999.796720
