Delay Constrained Throughput Analysis of CDMA Using Stochastic Network Calculus
2011 (English)In: 17th IEEE International Conference on Networks (ICON2011), 2011Conference paper (Refereed)
Code-division multiple-access (CDMA) has the potentialto support traffic sources with a wide range of qualityof service (QoS) requirements. The traffic carrying capacity ofCDMA channels under QoS constraints (such as delay guarantee)is, however, less well-understood. In this work, we propose amethod based on stochastic network calculus and large systemanalysis to quantify the maximum traffic that can be carriedby a multiuser CDMA network under the QoS constraints. Atthe physical layer, we have linear minimum-mean square errorreceivers and adaptive modulation and coding, while the channelservice process is modeled by using a finite-state Markov chain.We study the impact of delay requirements, violation probabilityand the user load on the traffic carrying capacity under differentsignal strengths. A key insight provided by the numerical resultsis as to how much one has to back-off from capacity under thedifferent delay requirements.
Place, publisher, year, edition, pages
Signal Processing Telecommunications
IdentifiersURN: urn:nbn:se:kth:diva-77885ScopusID: 2-s2.0-84859989008OAI: oai:DiVA.org:kth-77885DiVA: diva2:492149
17th IEEE International Conference on Networks (ICON2011), Dec. 14-16, Singapore
QC 201203302012-02-072012-02-072012-03-30Bibliographically approved