Wireless Personal Communications: An International Journal
Downlink mixed-traffic scheduling with packet division multiplexing
Proceedings of the 3nd ACM workshop on Performance monitoring and measurement of heterogeneous wireless and wired networks
A hybrid energy saving mechanism for VoIP traffic with silence suppression
NET-COOP'07 Proceedings of the 1st EuroFGI international conference on Network control and optimization
Performance analysis and simulation of packet scheduling algorithms in a femtocell environment
Proceedings of the 44th Annual Simulation Symposium
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In this article we analyze performance of VoIP services over 1xEVDO-Revision A (DO-Rev A) networks and show that high-quality VoIP with unconstrained mobility and high capacity can be achieved. Together with quality of service (QoS) requirements, we emphasize practical issues such as mobility, degradation of feedback-channel quality, and packet overheads. Novel techniques are presented for voice processing such as smart blanking and adaptive dejitter playback buffer with time warping. These techniques help to meet QoS constraints to achieve a circuit-like voice quality while improving overall capacity. Detailed end-to-end simulations are presented and system capacity is analyzed under the QoS and system stability constraints. We claim that DO-Rev A can provide VoIP capacity comparable to circuit-switched cellular CDMA technologies (e.g., IS-2000) and simultaneously carry significant amount of other types of traffic such as non-delay sensitive applications and downlink multicast.