Performance and capacity of a voice/data CDMA system with variable bit rate sources

Publisher Summary The chapter provides a step in studying the interplay among different types of services in a DS-CDMA system. It develops a generalized Erlang capacity formulation for voice and generalized data. The calculations are reduced to using means and variances. As data, but not voice, can be delayed, emphasis is on voice outage probability in anticipation of control strategies for data. One such data control strategy, using related analysis methodology, is studied. The analytic simplicity is achieved using an approximation. This approximation was also used in a somewhat different way, for an Erlang-capacity-type problem for packet CDMA. The chapter illustrates the formulation with a CELP speech coder and fax. The chapter provides the general formulation and gives the source models for voice and fax.

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