Get Analytical and Stochastic Modeling Techniques and PDF

By Ulf Jensen, Armin Heindl (auth.), Khalid Al-Begain, Dieter Fiems, Gábor Horváth (eds.)

This booklet constitutes the refereed court cases of the sixteenth foreign convention on Analytical and Stochastic Modeling recommendations and purposes, ASMTA 2009, held in Madrid, Spain, in June 2009 together with ECMS 2009, the 23nd ecu convention on Modeling and Simulation.

The 27 revised complete papers provided have been conscientiously reviewed and chosen from fifty five submissions. The papers are geared up in topical sections on telecommunication networks; instant & cellular networks; simulation; quueing platforms & distributions; queueing & scheduling in telecommunication networks; version checking & approach algebra; functionality & reliability research of assorted systems.

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Read Online or Download Analytical and Stochastic Modeling Techniques and Applications: 16th International Conference, ASMTA 2009, Madrid, Spain, June 9-12, 2009. Proceedings PDF

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Additional resources for Analytical and Stochastic Modeling Techniques and Applications: 16th International Conference, ASMTA 2009, Madrid, Spain, June 9-12, 2009. Proceedings

Sample text

Based on this model, the SUs operate in the unoccupied primary channels. If the PU appears, an SU shall immediately handoff from the current channel to another free one. If there are no free primary channels, an SU is dropped. An SU is dropped, even if there are free secondary channels. Therefore, the secondary channels have no effect on the performance of SUs. The process of spectrum access to the primary channels is modeled as a two-dimensional Markov chain. The number of primary channels, c1 will be sharable between PUs and SUs.

Al-Mahdi, and A. Mitschele-Thiel LMN LMN LMN LM NȜ   F   L N Ȝ   Nȝ  M F  L F  M L Ȝ   M F  LMN Ȝ L Lȝ  22 LMN M   F  N Ȝ L F   L  ȝ  L F  M Ȝ L M LMN  Ȝ N LM L F  LM   ȝ N NȜ M ȝ F  N Ȝ L Mȝ M Ȝ N   M  L F LMNȜ LMNȜ LMN LMN LMN LMN LMN LMN Fig. 2. Markov chain model for spectrum sharing with backup channels 1. State (i + 1, j, k). This case can be reached, if either one of the two following events happens: – a PU arrives and occupies a free channel which is not occupied by an SU with probability c1 −(i+j) c1 −i .

IEEE Personal Communications 6(4), 13–18 (1999) 3. : Cognitive radio: An integrated agent architecture for software defined radio. PhD Dissertation, Royal Inst. Technol. (KTH), Stockholm, Sweden (2000) 4. : NeXt Generation/Dynamic Spectrum Access/Cognitive Radio Wireless Networks: A Survey. Computer Networks Journal 50, 2127–2159 (2006) 5. : A Survey on Spectrum Management in Cognitive Radio Networks. IEEE Communications Magazine 46(4), 40–48 (2008) 6. html 7. : Analysis of Cognitive Radio Spectrum Access with Optimal Channel Reservation.

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