Pub Date : 2011-07-19DOI: 10.5220/0003438600270034
W. V. Kleunen, N. Meratnia, P. Havinga
The acoustic propagation speed under water poses significant challenges to the design of underwater sensor networks and their medium access control protocols. Scheduling allows reducing the effects of long propagation delay of the acoustic signal and has significant impacts on throughput, energy consumption, and reliability. In this paper we propose two approaches for scheduling large-scale underwater networks. One approach is a centralized scheduling approach, which yields the most efficient schedules but has significant communication and computational overhead. Our second approach uses clustering to split up the network in independent clusters. This approach provides significant benefits in terms of communication and computation, but yields less efficient schedules than the centralized approach. We evaluate both approaches in terms of efficiency, communication overhead and computation overhead of the resulting schedule. We show that the centralized approach yield the best schedule at the cost of significant communication and computation overhead. The distributed scheduling approach yield less efficient schedules but offers significant communication and computational complexity advantages.
{"title":"MAC scheduling in large-scale underwater acoustic networks","authors":"W. V. Kleunen, N. Meratnia, P. Havinga","doi":"10.5220/0003438600270034","DOIUrl":"https://doi.org/10.5220/0003438600270034","url":null,"abstract":"The acoustic propagation speed under water poses significant challenges to the design of underwater sensor networks and their medium access control protocols. Scheduling allows reducing the effects of long propagation delay of the acoustic signal and has significant impacts on throughput, energy consumption, and reliability. In this paper we propose two approaches for scheduling large-scale underwater networks. One approach is a centralized scheduling approach, which yields the most efficient schedules but has significant communication and computational overhead. Our second approach uses clustering to split up the network in independent clusters. This approach provides significant benefits in terms of communication and computation, but yields less efficient schedules than the centralized approach. We evaluate both approaches in terms of efficiency, communication overhead and computation overhead of the resulting schedule. We show that the centralized approach yield the best schedule at the cost of significant communication and computation overhead. The distributed scheduling approach yield less efficient schedules but offers significant communication and computational complexity advantages.","PeriodicalId":292305,"journal":{"name":"Proceedings of the International Conference on Wireless Information Networks and Systems","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115810576","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-07-18DOI: 10.5220/0003464700610064
P. Zhang, Xiaoyong Deng, H. Wen, Jifu Guo
Observations of sensors are modeled as mixed signals in multiple targets scenario. Each element of mixing matrix represents the power decay of a pair of target and sensor, and each column preserves the waveform formed by the corresponding target respectively. Making use of blind estimation algorithms, we get the estimation of mixing matrix. Target locations are then estimated using the least squares method.
{"title":"Multiple targets detection and localization based on blind estimation in wireless sensor network","authors":"P. Zhang, Xiaoyong Deng, H. Wen, Jifu Guo","doi":"10.5220/0003464700610064","DOIUrl":"https://doi.org/10.5220/0003464700610064","url":null,"abstract":"Observations of sensors are modeled as mixed signals in multiple targets scenario. Each element of mixing matrix represents the power decay of a pair of target and sensor, and each column preserves the waveform formed by the corresponding target respectively. Making use of blind estimation algorithms, we get the estimation of mixing matrix. Target locations are then estimated using the least squares method.","PeriodicalId":292305,"journal":{"name":"Proceedings of the International Conference on Wireless Information Networks and Systems","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127716342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-07-18DOI: 10.5220/0003614900690072
F. Sultan, S. Zummo
The deployment of a wireless sensor network is highly dependent on the target environment. Once the characteristics of the desired area are know, the question of network size arises. Factors like transmission power level, cost of network deployment and the coverage area directly affect the size of the network. This paper analyzes the behaviour of a typical multi-hop wireless sensor network operating in an outdoor environment. By considering two separate cases; fixed cost and fixed deployment area, we present best network set-up statistics based on actual received power measurements.
{"title":"Efficient network design for environmental monitoring applications A practical approach","authors":"F. Sultan, S. Zummo","doi":"10.5220/0003614900690072","DOIUrl":"https://doi.org/10.5220/0003614900690072","url":null,"abstract":"The deployment of a wireless sensor network is highly dependent on the target environment. Once the characteristics of the desired area are know, the question of network size arises. Factors like transmission power level, cost of network deployment and the coverage area directly affect the size of the network. This paper analyzes the behaviour of a typical multi-hop wireless sensor network operating in an outdoor environment. By considering two separate cases; fixed cost and fixed deployment area, we present best network set-up statistics based on actual received power measurements.","PeriodicalId":292305,"journal":{"name":"Proceedings of the International Conference on Wireless Information Networks and Systems","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121216748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-07-18DOI: 10.5220/0003509000870094
Jorge A. Pardiñas-Mir, M. Muller, R. Lamberti, C. Gimenes
Detection results of transmitted reference ultra-wideband signals (TR-UWB) are presented. The signals are received through the implementation in CMOS technology of the `Time Delayed Sampling and Correlation' (TDSC) detection method, which allows the test of its performance and validates the first stage of the synchronization process. This method has been proposed to achieve a UWB system with low cost, low complexity and low power consumption for medium to low data rate applications such as ranging or localization. Detection of such signals has been done successfully in both a direct cable connection as well in a wireless system with a real channel. In both cases they were used in the sub GHz band (group1) and also in the low band UWB signals.
{"title":"Experimental validation for TR-UWB systems By time delayed sampling & correlation (TDSC)","authors":"Jorge A. Pardiñas-Mir, M. Muller, R. Lamberti, C. Gimenes","doi":"10.5220/0003509000870094","DOIUrl":"https://doi.org/10.5220/0003509000870094","url":null,"abstract":"Detection results of transmitted reference ultra-wideband signals (TR-UWB) are presented. The signals are received through the implementation in CMOS technology of the `Time Delayed Sampling and Correlation' (TDSC) detection method, which allows the test of its performance and validates the first stage of the synchronization process. This method has been proposed to achieve a UWB system with low cost, low complexity and low power consumption for medium to low data rate applications such as ranging or localization. Detection of such signals has been done successfully in both a direct cable connection as well in a wireless system with a real channel. In both cases they were used in the sub GHz band (group1) and also in the low band UWB signals.","PeriodicalId":292305,"journal":{"name":"Proceedings of the International Conference on Wireless Information Networks and Systems","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133071087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-07-18DOI: 10.5220/0003677200120017
S. K. Dhurandher, M. Obaidat, Mayank Gupta
Foraging Behavior in Ant Swarms can be very helpful when applied to the protocols in Mobile Ad hoc NETworks (MANETs). When the Ant Colony Optimization Scheme (ACO) is applied to a protocol, larger number of paths are generated from the source to destination which helps in improving the packet delivery ratio because an alternate back up path is always available in case a path gets broken due to the mobile nodes. In this paper, we apply the ACO scheme on an already existing Energy efficient protocol Conditional Max-Min Battery Capacity Routing (CMMBCR) (C.-K. Toh, 2001). The CMMBCR not only takes care of the total transmission energy in the network but also the residual battery capacity of the nodes. Hence applying ACO scheme on CMMBCR makes it more efficient in terms of energy, packet delivery ratio etc. The efficiency of our proposed protocol A-CMMBCR is then established by comparing it with some of the other existing Energy aware protocols such as Energy-Aware Routing protocol (EAAR) (Dhurandher et al., 2009), Minimum Transmission Power Routing (MTPR) (Scott and Bambos, 1996) and CMMBCR. The results are captured in the form of a graphical format.
{"title":"Application of Ant Colony Optimization to develop Energy efficient protocol in mobile Ad-Hoc Networks","authors":"S. K. Dhurandher, M. Obaidat, Mayank Gupta","doi":"10.5220/0003677200120017","DOIUrl":"https://doi.org/10.5220/0003677200120017","url":null,"abstract":"Foraging Behavior in Ant Swarms can be very helpful when applied to the protocols in Mobile Ad hoc NETworks (MANETs). When the Ant Colony Optimization Scheme (ACO) is applied to a protocol, larger number of paths are generated from the source to destination which helps in improving the packet delivery ratio because an alternate back up path is always available in case a path gets broken due to the mobile nodes. In this paper, we apply the ACO scheme on an already existing Energy efficient protocol Conditional Max-Min Battery Capacity Routing (CMMBCR) (C.-K. Toh, 2001). The CMMBCR not only takes care of the total transmission energy in the network but also the residual battery capacity of the nodes. Hence applying ACO scheme on CMMBCR makes it more efficient in terms of energy, packet delivery ratio etc. The efficiency of our proposed protocol A-CMMBCR is then established by comparing it with some of the other existing Energy aware protocols such as Energy-Aware Routing protocol (EAAR) (Dhurandher et al., 2009), Minimum Transmission Power Routing (MTPR) (Scott and Bambos, 1996) and CMMBCR. The results are captured in the form of a graphical format.","PeriodicalId":292305,"journal":{"name":"Proceedings of the International Conference on Wireless Information Networks and Systems","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126539105","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-07-18DOI: 10.5220/0003518100050011
F. Awuor, Karim D Djouani, G. Noel
Ad hoc networks are dynamic and scalable entities that autonomously adapt to nodes entering the network (i.e. increasing interference) or exiting the network (i.e. due to energy depletion), poor connectivity among others. In such networks, nodes exhibit individualistic behaviours where nodes selfishly compete for the limited network resources (i.e. energy and bandwidth) to maximize their own utilities. This consequently degrades network performance leading to low data rates, poor power efficiency, loss of connectivity etcetera. This paper considers a network utility maximization (NUM) strategy based on coupled interference minimization to adapt the transmission power and data rates in ad hoc networks. The proposed distributive joint power and rate adaptation (JRPA) algorithm employs costing (and reward) mechanisms to promote users' cooperation such that both users' local and network global optimum is always attained. This is similar to a super-modular game hence the optimality and convergence of JRPA is analysed using super-modular game theory. Simulation results show that the proposed algorithm improves network performance since users' are compels to transmit at optimal data rates and power levels just enough to sustain the transmission.
{"title":"Distributed joint power and rate adaptation in ad hoc networks","authors":"F. Awuor, Karim D Djouani, G. Noel","doi":"10.5220/0003518100050011","DOIUrl":"https://doi.org/10.5220/0003518100050011","url":null,"abstract":"Ad hoc networks are dynamic and scalable entities that autonomously adapt to nodes entering the network (i.e. increasing interference) or exiting the network (i.e. due to energy depletion), poor connectivity among others. In such networks, nodes exhibit individualistic behaviours where nodes selfishly compete for the limited network resources (i.e. energy and bandwidth) to maximize their own utilities. This consequently degrades network performance leading to low data rates, poor power efficiency, loss of connectivity etcetera. This paper considers a network utility maximization (NUM) strategy based on coupled interference minimization to adapt the transmission power and data rates in ad hoc networks. The proposed distributive joint power and rate adaptation (JRPA) algorithm employs costing (and reward) mechanisms to promote users' cooperation such that both users' local and network global optimum is always attained. This is similar to a super-modular game hence the optimality and convergence of JRPA is analysed using super-modular game theory. Simulation results show that the proposed algorithm improves network performance since users' are compels to transmit at optimal data rates and power levels just enough to sustain the transmission.","PeriodicalId":292305,"journal":{"name":"Proceedings of the International Conference on Wireless Information Networks and Systems","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132826198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-07-18DOI: 10.5220/0003461300410046
Muath A. Obaidat, Mohamed A. Ali, Ihsan Shahwan, M. Obaidat, S. Obeidat
This paper proposes a QoS multipath routing protocol (QMRP) for MANETs based on the single path AODV routing protocol. QMRP establishes node-disjoint paths that experience the lowest delay. Other delay-aware routing protocols do not factor in the projected contribution of the node requesting a route in the total network load. The implication is that the end-to-end (E2E) delay obtained through RREQ is no longer accurate. Unlike its predecessors, QMRP takes into account the projected contribution of the source node in the calculation of E2E delay. To obtain accurate estimate of path delay, QMRP uses cross-layer communication to achieve link and channel-awareness. Performance evaluation of QMRP and comparison with AODV using OPNET show that QMRP outperforms AODV in terms of average throughput, delay and packet loss has been conducted.
{"title":"QoS-aware multipath routing protocol for delay sensitive applications in MANETs A cross-layer approach","authors":"Muath A. Obaidat, Mohamed A. Ali, Ihsan Shahwan, M. Obaidat, S. Obeidat","doi":"10.5220/0003461300410046","DOIUrl":"https://doi.org/10.5220/0003461300410046","url":null,"abstract":"This paper proposes a QoS multipath routing protocol (QMRP) for MANETs based on the single path AODV routing protocol. QMRP establishes node-disjoint paths that experience the lowest delay. Other delay-aware routing protocols do not factor in the projected contribution of the node requesting a route in the total network load. The implication is that the end-to-end (E2E) delay obtained through RREQ is no longer accurate. Unlike its predecessors, QMRP takes into account the projected contribution of the source node in the calculation of E2E delay. To obtain accurate estimate of path delay, QMRP uses cross-layer communication to achieve link and channel-awareness. Performance evaluation of QMRP and comparison with AODV using OPNET show that QMRP outperforms AODV in terms of average throughput, delay and packet loss has been conducted.","PeriodicalId":292305,"journal":{"name":"Proceedings of the International Conference on Wireless Information Networks and Systems","volume":"250 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121442641","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-07-18DOI: 10.5220/0003442701030108
A. Sheikh, M. I. Akram, K. Masood
This paper presents the results of channel sounding experiment performed in confined environment. The swept time-delay cross-correlation technique is used as a method for sounding to measure the channel impulse response (CIR). PDF of the envelope and power for the received CIR is presented. The path loss exponent has been calculated. The data has been analysed for impulse response and channel parameters like average delay, rms delay spread, number of paths and channel bandwidth. The CIR is used in calculation of total received power.
{"title":"Wideband wireless propagation in confined spaces","authors":"A. Sheikh, M. I. Akram, K. Masood","doi":"10.5220/0003442701030108","DOIUrl":"https://doi.org/10.5220/0003442701030108","url":null,"abstract":"This paper presents the results of channel sounding experiment performed in confined environment. The swept time-delay cross-correlation technique is used as a method for sounding to measure the channel impulse response (CIR). PDF of the envelope and power for the received CIR is presented. The path loss exponent has been calculated. The data has been analysed for impulse response and channel parameters like average delay, rms delay spread, number of paths and channel bandwidth. The CIR is used in calculation of total received power.","PeriodicalId":292305,"journal":{"name":"Proceedings of the International Conference on Wireless Information Networks and Systems","volume":"170 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124147404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-07-18DOI: 10.5220/0003517100470052
A. V. Medina, J. A. Gómez, Octavio Rivera, E. Dorronzoro, M. Monge
This paper presents a work in progress for the developing of a fingerprint indoor position system based on OpenMAC, an IEEE 802.15.4 embedded software implementation from Atmel to be used in different scenarios like e_health, ambient living or smart building. The system is thought to work as another one that we have yet developed but using the BitCloud Stack, a full-featured, second generation embedded software stack from the same supplier, but improving it. The first steps followed up in the system development are shown in this paper.
{"title":"Fingerprint indoor position system based on OpenMAC","authors":"A. V. Medina, J. A. Gómez, Octavio Rivera, E. Dorronzoro, M. Monge","doi":"10.5220/0003517100470052","DOIUrl":"https://doi.org/10.5220/0003517100470052","url":null,"abstract":"This paper presents a work in progress for the developing of a fingerprint indoor position system based on OpenMAC, an IEEE 802.15.4 embedded software implementation from Atmel to be used in different scenarios like e_health, ambient living or smart building. The system is thought to work as another one that we have yet developed but using the BitCloud Stack, a full-featured, second generation embedded software stack from the same supplier, but improving it. The first steps followed up in the system development are shown in this paper.","PeriodicalId":292305,"journal":{"name":"Proceedings of the International Conference on Wireless Information Networks and Systems","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117097906","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2011-07-18DOI: 10.5220/0003443900770086
S. Aust, A. Ahrens, C. Benavente-Peces
In order to comply with the demand on increasing available data rates in particular in wireless technologies, systems with multiple transmit and receive antennas, also called MIMO (multiple-input multiple-output) systems, have become indispensable for future generations of wireless systems. Due to the strongly increasing demand in high-data rate transmission systems, frequency non-selective MIMO links have reached a state of maturity and frequency selective MIMO links are in the focus of interest. In this field, the combination of MIMO transmission and OFDM (orthogonal frequency division multiplexing) can be considered as an essential part of fulfilling the requirements of future generations of wireless systems. However, single-user scenarios have reached a state of maturity. By contrast multiple users' scenarios require substantial further research, where in comparison to ZF (zero-forcing) multiuser transmission techniques, the individual user's channel characteristics are taken into consideration in this contribution. The performed joint optimization of the number of activated MIMO layers and the number of transmitted bits per subcarrier along with the appropriate allocation of the transmit power shows that not necessarily all user-specific MIMO layers per subcarrier have to be activated in order to minimize the overall BER under the constraint of a given fixed data throughput.
{"title":"Modulation-mode assignment in SVD-assisted multiuser MIMO-OFDM systems","authors":"S. Aust, A. Ahrens, C. Benavente-Peces","doi":"10.5220/0003443900770086","DOIUrl":"https://doi.org/10.5220/0003443900770086","url":null,"abstract":"In order to comply with the demand on increasing available data rates in particular in wireless technologies, systems with multiple transmit and receive antennas, also called MIMO (multiple-input multiple-output) systems, have become indispensable for future generations of wireless systems. Due to the strongly increasing demand in high-data rate transmission systems, frequency non-selective MIMO links have reached a state of maturity and frequency selective MIMO links are in the focus of interest. In this field, the combination of MIMO transmission and OFDM (orthogonal frequency division multiplexing) can be considered as an essential part of fulfilling the requirements of future generations of wireless systems. However, single-user scenarios have reached a state of maturity. By contrast multiple users' scenarios require substantial further research, where in comparison to ZF (zero-forcing) multiuser transmission techniques, the individual user's channel characteristics are taken into consideration in this contribution. The performed joint optimization of the number of activated MIMO layers and the number of transmitted bits per subcarrier along with the appropriate allocation of the transmit power shows that not necessarily all user-specific MIMO layers per subcarrier have to be activated in order to minimize the overall BER under the constraint of a given fixed data throughput.","PeriodicalId":292305,"journal":{"name":"Proceedings of the International Conference on Wireless Information Networks and Systems","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116869756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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