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| Author(s): |
Plínio Santini Dester
Total Authors: 1
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| Document type: | Doctoral Thesis |
| Press: | Campinas, SP. |
| Institution: | Universidade Estadual de Campinas (UNICAMP). Faculdade de Engenharia Elétrica e de Computação |
| Defense date: | 2021-11-10 |
| Examining board members: |
Paulo Cardieri;
Charles Casimiro Cavalcante;
Michel Daoud Yacoub;
Renato da Rocha Lopes;
Richard Demo Souza
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| Advisor: | Paulo Cardieri |
| Abstract | |
In this thesis, we present a contribution to the area of wireless networks under random-access and limited by interference. The first part of the manuscript introduces the necessary mathematical theory and, then, we state classical results on stochastic geometry and wireless networks. The second part of the manuscript presents the network model used throughout the thesis. Then, we present the contributions, which consist in fundamental studies related to understanding the limits and the behavior of this class of systems. More specifically, we characterize, through some transmission success probability models, the distribution of the interference in a channel where packets are transmitted according to a Poisson process; we prove that the optimal random-access retransmission approach is to limit the maximum number of retransmissions to the smallest value that satisfies some constraint (such as throughput, traffic, or transmission/packet success probability) in a scenario where only the most recent packet matters; we find closed form expressions to the stability region, transmission success probability and mean delay in a high-mobility Poisson network with N different classes of users sharing the same channel; using the aforementioned model we show that for N=2 classes of users, performing frequency bandwidth partition for one of the classes may improve the overall performance of the system; we find an example in a commonly used Poisson network model for which the stationary distribution is not unique. Then, we provide sufficient conditions to guarantee unicity of the stationary in this Poisson network model assuming any path loss model and any distribution of link distance (AU) | |
| FAPESP's process: | 17/21347-0 - On the interference and delay of wireless networks with spatio-temporal traffic |
| Grantee: | Plínio Santini Dester |
| Support Opportunities: | Scholarships in Brazil - Doctorate (Direct) |