Title :
Performance analysis of voice message service in CDMA cellular systems
Author :
Liu, Song ; Niu, Zhisheng ; Huang, Dawei
Author_Institution :
Dept. of Electron. Eng., Tsinghua Univ., Beijing, China
Abstract :
In this paper, we propose and analyze a preemption based admission control policy for an integrated voice and voice message service (VMS) CDMA system. Granted with the priority, the performance of voice calls is not affected by VMS. A multicode scheme is used for VMS traffic to transmit on multiple spreading codes in parallel. The SIR constraints of voice and VMS calls are taken into account to identify the system capacity. By using a two-dimensional Markov model, the performance of the integrated system is evaluated. Under different system traffic loads, QoS-based system capacities are obtained and optimal coding schemes for VMS are specified. Finally, the effect of the VMS buffer size is discussed.
Keywords :
Markov processes; buffer storage; cellular radio; code division multiple access; quality of service; telecommunication congestion control; voice mail; CDMA; QoS-based system capacity; admission control policy; integrated voice; multicode scheme; optimal coding scheme; performance analysis; quality of service; soft handoff; two-dimensional Markov model; voice message service; voice message service buffer size; voice signal-to-inference ratio constraints; Admission control; Consumer electronics; Digital communication; Message service; Multiaccess communication; Performance analysis; Speech analysis; Technological innovation; Traffic control; Voice mail;
Conference_Titel :
Communication Technology Proceedings, 2003. ICCT 2003. International Conference on
Print_ISBN :
7-5635-0686-1
DOI :
10.1109/ICCT.2003.1209674
