Cost-effective wireless architectures achieving enhanced capacity and coverage
Abstract/Contents
- Abstract
- Achieving higher coverage and capacity while at the same time reducing the cost of cell site deployment, maintenance and backhaul is always the goal of wireless operators. Femtocell and relay are two promising architectural candidates for mobile operators to achieve coverage and capacity improvement in a cost-effective manner. The first half of this dissertation focuses on the relay systems. Relay stations are devices that assist transmission from the information source to the destination. The capacity of a wireless relay network composed of a large number of nodes that operate in an amplify-and-forward mode and that divide into a fixed number of levels is analyzed. We consider both cases where the direct link towards destination nodes is present or not. The capacity computation relies on the study of products of large random matrices, whose limiting eigenvalue distribution is computed via a set of recursive equations. The femtocell network is explored in the second half of this dissertation. The idea of femtocells is to overlay low-power and low-cost base station devices, namely Femto-APs, on the existing cellular network, where each Femto-AP provides high speed wireless connection to subscribers within a small range. Simulation results show that significant areal capacity (throughput per unit area) gain can be achieved via intense spatial reuse of the wireless spectrum. However, Femto-APs introduce more interference to the existing cellular network and degrade the coverage. Fractional frequency reuse can be applied for interference mitigation. Acceptable coverage can be provided while retaining similar order of areal capacity gain.
Description
| Type of resource | text |
|---|---|
| Form | electronic; electronic resource; remote |
| Extent | 1 online resource. |
| Publication date | 2010 |
| Issuance | monographic |
| Language | English |
Creators/Contributors
| Associated with | Ye, Shuping |
|---|---|
| Associated with | Stanford University, Department of Electrical Engineering |
| Primary advisor | Cioffi, John M |
| Thesis advisor | Cioffi, John M |
| Thesis advisor | Cox, Donald C |
| Thesis advisor | Kahn, Joseph |
| Advisor | Cox, Donald C |
| Advisor | Kahn, Joseph |
Subjects
| Genre | Theses |
|---|
Bibliographic information
| Statement of responsibility | Shu-Ping Yeh. |
|---|---|
| Note | Submitted to the Department of Electrical Engineering. |
| Thesis | Thesis (Ph.D.)--Stanford University, 2010. |
| Location | electronic resource |
Access conditions
- Copyright
- © 2010 by Shu-ping Yeh
- License
- This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).
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