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Cooperative Diversity and Power Consumption in Multi-hop WSN: Effects of node energy on Single Frequency Networks
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information and Communication systems.
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information and Communication systems.
2014 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

At the present time, wireless sensor networks are becoming more and more 

common and energy consumption is a key factor in the deployment and 

maintenance of these networks. This thesis compares non-SFN multi-hop and 

a single frequency network (SFN) or cooperative diversity algorithms with 

respect to the energy consumed by the nodes. Since the nodes have limited 

power capacity it is extremely important to have an efficient algorithm. In 

addition, the behaviour of the network when SFN is employed must be 

studied and advice offered with regards to improvements in order to achieve 

preferential results. The effect on the network regarding macro diversity is 

positive but, the battery energy consumption is still higher and has a drainage 

effect on the network for simple multi-hop. The report will include 

background information regarding mobile ad-hoc networks and the 

relationship with cooperative diversity. It will also deal with how different 

algorithms affect the energy consumption in multi-hop networks. Simulations 

will also be presented in Matlab plots for two single frequency network 

scenarios against a simple multi-hop regarding node energy during the 

network discovery and decline. Results will include comparative figures which 

are followed by a discussion concerning the simulation results and its effects. 

The applications for wireless sensor networks include area monitoring, 

environmental monitoring, data logging, industrial monitoring, agriculture 

and the idea can additionally be used for wireless radio and TV distribution. 

The simulations have been conducted for cooperative diversity algorithms 

(SFN-A and SFN-D) against an algorithm which does not use cooperative 

diversity in Matlab. The node energy consumption is compared for both 

scenarios with regards to both  network reachability and decline. The node 

power is analysed during the reachability of the network from the start to 

attaining 100% of the discovered network. During network decline, the 

behaviour of the node energy is studied for algorithms with SFN-A, SFN-D 

and non SFN.  Also, the number of times node transmission occurs with 

regards to  node discovery is also analysed. 

Place, publisher, year, edition, pages
2014. , 102 p.
Keyword [en]
Macro diversity, Multi-hop, Single Frequency network, Reachability, Decline, Outage
National Category
Engineering and Technology
URN: urn:nbn:se:miun:diva-21564OAI: diva2:704146
Subject / course
Computer and System Sciences
2013-09-30, Mid Sweden University, Sundsvall, 10:00 (English)
Available from: 2014-03-18 Created: 2014-03-11 Last updated: 2014-03-18Bibliographically approved

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