Analysis of Capacity and Error Ratio in 3GPP LTE Systems using Signal Flow Graph Models

Konferenz: European Wireless 2013 - 19th European Wireless Conference
16.04.2013 - 18.04.2013 in Guildford, UK

Tagungsband: European Wireless 2013

Seiten: 8Sprache: EnglischTyp: PDF

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Chen, Yuan; Walke, Bernhard (Communication Networks (ComNets) Research Group, Faculty of Electrical Engineering and Information Technology, RWTH Aachen University, Germany)

A novel analytical framework is presented to evaluate capacity and error ratio of different protocol layers in 3GPP LTE systems. Signal flow graphs are used to model various aspects: On PHY layer, association of user terminal to a radio access point, probabilistic radio channel states, adaptive modulation and coding, overhead in LTE radio frame, turbo coded M-QAM block error rate, and Chase combining are taken into account. On MAC layer, hybrid-ARQ, resource assignment failure, and feedback misdetection are accounted for. On RLC layer, segmentation, selective repeat - ARQ, feedback loss, and timer for upcoming feedback are considered.