NDLI: A delay analysis model for Multichannel Random Access in OFDMA systems

Content Provider	IEEE Xplore Digital Library
Author	Jiechen Yin Yuming Mao Supeng Leng Yuming Jiang
Copyright Year	2015
Description	Author affiliation: Dept. of Telematics, Norwegian Univ. of Sci. & Technol., Trondheim, Norway (Yuming Jiang) \|\| Sch. of Commun. & Inf. Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu, China (Jiechen Yin; Yuming Mao; Supeng Leng)
Abstract	The combination with Orthogonal Frequency Multiple Access (OFDMA) technology is an effective approach for improving the performance of random channel access in wireless broadband networks, such as LTE, WiMax and the next-generation WLAN. In this paper, we propose a mathematical model to analyze the delay performance of an OFDMA-random-access system under unsaturated load condition. The proposed model adopts a general distribution for the duration of each time slot. In this way, the model no longer depends on a certain protocol. On the other hand, our model supports a more general setting, that is, a terminal may simultaneously access multiple subchannels in the system. Under this general assumption, we investigate the system delay performance and the stability condition. Simulation results not only show the accuracy of the presented analysis, but also demonstrate that the analysis based on saturated load assumption may underestimate the actual performance of the OFDMA-random-access system.
Starting Page	3592
Ending Page	3597
File Size	264965
Page Count	6
File Format	PDF
e-ISBN	9781467364324
DOI	10.1109/ICC.2015.7248882
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-06-08
Publisher Place	UK
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Delays Analytical models Load modeling Stability analysis Throughput Protocols Mathematical model
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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