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MAC layer throughput estimation in impulse-radio UWB networks

Broustis, I and Vlavianos, A and Krishnamurthy, P and Krishnamurthy, SV (2011) MAC layer throughput estimation in impulse-radio UWB networks. IEEE Transactions on Mobile Computing, 10 (5). 700 - 715. ISSN 1536-1233

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The inherent channel characteristics of impulse-based UWB networks affect the MAC layer performance significantly. Most previous studies on evaluating MAC protocols are based on prolonged simulations and do not account for the multiple access interference due to multipath delay spread. In this work, we develop CTU, an analytical framework for Capturing the Throughput dependencies in UWB networks, while taking into account the PHY layer effects. The key attributes of CTU are: 1) It is modular; it can be easily modified to provide a basis for evaluating a wide range of MAC protocols for impulse-based UWB networks. The only requirements are that the MAC protocol under study be based on time-hopping and the modulation scheme be pulse position modulation; these are common design decisions in UWB networks. 2) It considers the channel characteristics in addition to MAC layer effects; CTU correlates probabilistically the multipath delay profile of the channel with the packet error rate. We employ CTU to evaluate the performance of different generic medium access procedure. We compare the results with those from extensive simulations and show the high accuracy of CTU. We use CTU to assess the impact of various system parameters on the MAC layer performance; we make several interesting observations that are discussed in depth. © 2006 IEEE.


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Item Type: Article
Status: Published
CreatorsEmailPitt UsernameORCID
Broustis, I
Vlavianos, A
Krishnamurthy, Pprashk@pitt.eduPRASHK
Krishnamurthy, SV
Date: 1 May 2011
Date Type: Publication
Journal or Publication Title: IEEE Transactions on Mobile Computing
Volume: 10
Number: 5
Page Range: 700 - 715
DOI or Unique Handle: 10.1109/tmc.2010.203
Institution: University of Pittsburgh
Refereed: Yes
ISSN: 1536-1233
Date Deposited: 24 Jun 2011 21:42
Last Modified: 04 Feb 2019 15:59


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