Delta modulation based prediction for access control in integrated voice/data CDMA systems

Cristina Comaniciu, Narayan B. Mandayam

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

In this paper, we propose access control protocols for integrated voice/data code division multiple access (CDMA) systems that are based on estimating the residual capacity available for data users. The data model considered in the analysis is suitable for nontransparent services (e.g., e-mail, file transfer, store-and-forward facsimile, etc.). The residual capacity is derived from the feasibility condition for power control using an adaptive prediction technique based on delta modulation. The analysis is extended for the case of imperfect power control. Two access control protocols are considered: modified delta modulation with scheduled access (MDM-S) and modified delta modulation with random access (MDM-R). Comparisons with earlier proposed protocols reveal a better performance in terms of average throughput for data for a given system capacity and outage probability.

Original languageEnglish
Pages (from-to)112-122
Number of pages11
JournalIEEE Journal on Selected Areas in Communications
Volume18
Issue number1
DOIs
StatePublished - Jan 2000

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