Without any doubt MIMO techniques count to the few emerging key technologies for wireless communications. It is obviously that MIMO techniques can improve the system capacity and performance. On the other hand, there has been an upsurge of interest in multi-hop infrastructure-based networks in both industry and academia. In this article, multi-hop MIMO relay network is studied and different channel models are analyzed. At first, 2-hop relay network is worked on within both SISO and MIMO systems. Three channel models are applied into the system and different value of signal-to-noise ratio (SNR) of direct link between BS and MS are observed. Results show that when meeting 100% system efficiency, the required relay SNR gain of 2-antenna system can be reduced to half of that with only one transceiver antenna. After that, multi-hop network is researched. Statistics figures out that when passing through ideal channel, 4-hop relays is possible with given SNR of more than 10 dB whereas, 5-hop communication can be realized in 4times4 MIMO under the assumption of 0 dB of SNR of direct link between BS and MS and 100% system efficiency. With respect to Rayleigh frequency-selective fading channel, SISO system can only ensure 2-hop relays whereas one more hop is supported in 4times4 MIMO network. Furthermore, in 4times4 MIMO, with the increase of hop, extra 3 dB is needed.
{"title":"Performance Analysis of Multi-Hop MIMO Relay Network","authors":"Yiling Wang, Fuqiang Liu, Shangzhi Xu, Xinhong Wang, Yeqing Qian, Ping Wang","doi":"10.1109/ICCW.2008.6","DOIUrl":"https://doi.org/10.1109/ICCW.2008.6","url":null,"abstract":"Without any doubt MIMO techniques count to the few emerging key technologies for wireless communications. It is obviously that MIMO techniques can improve the system capacity and performance. On the other hand, there has been an upsurge of interest in multi-hop infrastructure-based networks in both industry and academia. In this article, multi-hop MIMO relay network is studied and different channel models are analyzed. At first, 2-hop relay network is worked on within both SISO and MIMO systems. Three channel models are applied into the system and different value of signal-to-noise ratio (SNR) of direct link between BS and MS are observed. Results show that when meeting 100% system efficiency, the required relay SNR gain of 2-antenna system can be reduced to half of that with only one transceiver antenna. After that, multi-hop network is researched. Statistics figures out that when passing through ideal channel, 4-hop relays is possible with given SNR of more than 10 dB whereas, 5-hop communication can be realized in 4times4 MIMO under the assumption of 0 dB of SNR of direct link between BS and MS and 100% system efficiency. With respect to Rayleigh frequency-selective fading channel, SISO system can only ensure 2-hop relays whereas one more hop is supported in 4times4 MIMO network. Furthermore, in 4times4 MIMO, with the increase of hop, extra 3 dB is needed.","PeriodicalId":360127,"journal":{"name":"ICC Workshops - 2008 IEEE International Conference on Communications Workshops","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117100691","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}
Continuous mobility of nodes makes ad hoc networks vulnerable to be partitioned. Many partition prevention approaches are only based on link availability while ignoring that nodes mostly move in a group pattern in practical environment. Adversaries may decrease network performance through deliberately launching partition, which is seldom considered as a type of attack in conventional intrusion detection systems and secure routing protocols. To prevent both natural and malicious network partition caused by group mobility, we present a novel route maintaining mechanism based on cooperative healing cell, which is composed by cooperative groups of nodes. The basic unit for route maintenance is node group not a single node. Our design employs a preemptive partition avoidance policy which can launch route maintenance before actual partition. The simulation shows that cooperative healing cell not only increases the precision in partition prediction but also provides an effective cooperation enhancement against the partition caused by malicious node groups.
{"title":"Preventing Natural and Malicious Network Partition in Ad Hoc Networks Using Cooperative Healing Cell","authors":"Chen Huang, Furong Wang, Benxiong Huang, Yijun Mo","doi":"10.1109/ICCW.2008.35","DOIUrl":"https://doi.org/10.1109/ICCW.2008.35","url":null,"abstract":"Continuous mobility of nodes makes ad hoc networks vulnerable to be partitioned. Many partition prevention approaches are only based on link availability while ignoring that nodes mostly move in a group pattern in practical environment. Adversaries may decrease network performance through deliberately launching partition, which is seldom considered as a type of attack in conventional intrusion detection systems and secure routing protocols. To prevent both natural and malicious network partition caused by group mobility, we present a novel route maintaining mechanism based on cooperative healing cell, which is composed by cooperative groups of nodes. The basic unit for route maintenance is node group not a single node. Our design employs a preemptive partition avoidance policy which can launch route maintenance before actual partition. The simulation shows that cooperative healing cell not only increases the precision in partition prediction but also provides an effective cooperation enhancement against the partition caused by malicious node groups.","PeriodicalId":360127,"journal":{"name":"ICC Workshops - 2008 IEEE International Conference on Communications Workshops","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126315476","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}
IEEE 802.22 defines the world-wide first cognitive radio (CR) standard. In the range between 41 MHz and 910 MHz CR overlay-systems can be installed besides licensed radio services such as radio and TV broadcasting. In order to fulfill the regulative guidelines for interference limitations, adequate spectral sensing and user detection has to be supported by the CR terminals. The wide frequency range specified in IEEE 802.22 and the high dynamic range of signals in this band lead to high demands on the CR receiver's front-end. Especially the performance requirements on analog-to-digital converters (ADCs) increase significantly compared to current wireless systems. Based on measurements taken in the frequency range between 41 MHz and 910 MHz requirements to CR's ADCs are figured out. Furthermore, the measurement results are analyzed regarding expectable allocation scenarios and their impacts on spectral sensing. Derived from these results and a comparison of general spectral sensing mechanisms, an approach for a CR receiver enabling wide-band sensing is presented. By combining a-priori information resulting from scenario analysis with adapted information processing in the CR terminal, the ADC's performance requirements can be reduced.
{"title":"A Cognitive Radio Receiver Supporting Wide-Band Sensing","authors":"V. Blaschke, T. Renk, F. Jondral","doi":"10.4236/wsn.2009.13018","DOIUrl":"https://doi.org/10.4236/wsn.2009.13018","url":null,"abstract":"IEEE 802.22 defines the world-wide first cognitive radio (CR) standard. In the range between 41 MHz and 910 MHz CR overlay-systems can be installed besides licensed radio services such as radio and TV broadcasting. In order to fulfill the regulative guidelines for interference limitations, adequate spectral sensing and user detection has to be supported by the CR terminals. The wide frequency range specified in IEEE 802.22 and the high dynamic range of signals in this band lead to high demands on the CR receiver's front-end. Especially the performance requirements on analog-to-digital converters (ADCs) increase significantly compared to current wireless systems. Based on measurements taken in the frequency range between 41 MHz and 910 MHz requirements to CR's ADCs are figured out. Furthermore, the measurement results are analyzed regarding expectable allocation scenarios and their impacts on spectral sensing. Derived from these results and a comparison of general spectral sensing mechanisms, an approach for a CR receiver enabling wide-band sensing is presented. By combining a-priori information resulting from scenario analysis with adapted information processing in the CR terminal, the ADC's performance requirements can be reduced.","PeriodicalId":360127,"journal":{"name":"ICC Workshops - 2008 IEEE International Conference on Communications Workshops","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134104152","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}
In this paper, we study simple collaborative communication schemes and evaluate how they can increase the reachability and data rate of a wireless network in a tactical environment. Often nodes employed in such an environment are constrained by transmitting power, range, and dead zones. As such, maintaining network connectivity in a tactical environment presents many challenges. Collaborative power combining schemes can overcome power and range constraints. This is done by exploiting the broadcast nature of signals - collaborating nodes first listen to the transmitted data packets and then constructively combine transmissions to increase radiated energy to the receiver. As a consequence, range and SNR increase. Using analysis and simulation, we demonstrate that, by utilizing such techniques, an increase in both network reachability and data rates is possible, even in the presence of detrimental environmental conditions. Our analysis shows that these schemes not only are useful in low SNR regimes and power constrained environments, but also can improve the variance of system performance.
{"title":"Improving Network Reachability and Data Rate in Tactical Wireless Networks via Collaborative Communications","authors":"R. Ghanadan, K. Guan, D. Imbrenda, S. Mo, J. Hsu","doi":"10.1109/ICCW.2008.66","DOIUrl":"https://doi.org/10.1109/ICCW.2008.66","url":null,"abstract":"In this paper, we study simple collaborative communication schemes and evaluate how they can increase the reachability and data rate of a wireless network in a tactical environment. Often nodes employed in such an environment are constrained by transmitting power, range, and dead zones. As such, maintaining network connectivity in a tactical environment presents many challenges. Collaborative power combining schemes can overcome power and range constraints. This is done by exploiting the broadcast nature of signals - collaborating nodes first listen to the transmitted data packets and then constructively combine transmissions to increase radiated energy to the receiver. As a consequence, range and SNR increase. Using analysis and simulation, we demonstrate that, by utilizing such techniques, an increase in both network reachability and data rates is possible, even in the presence of detrimental environmental conditions. Our analysis shows that these schemes not only are useful in low SNR regimes and power constrained environments, but also can improve the variance of system performance.","PeriodicalId":360127,"journal":{"name":"ICC Workshops - 2008 IEEE International Conference on Communications Workshops","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114115617","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}
In this work a performance evaluation of network coding for cooperative wireless networks is carried out. Implementing network coding on commercially available mobile devices, the performance is presented in terms of throughput, delay and energy consumption. In contrast to purely cellular systems, where the mobile devices are only connected to the base station, in cooperative wireless networks, the mobile device, in addition to the cellular communication, establishes short range links to neighboring mobile devices within its proximity. In prior work it has been shown that the newly formed cooperative cluster, also referred as wireless grid, can offer each participating mobile device a better performance in terms of data rate, delay, robustness, security, and energy consumption in contrast to any stand alone device. To improve the performance within the cooperative cluster even more, network coding seems to be a promising technology as it decreases the number of packets to be interchanged among cooperative mobile devices leading to a decreased packet delay. The energy saved by fewer packet transmissions is confronted with the energy needed to carry out the network coding and related overhead. The findings of this paper show that network coding is always beneficial in terms of throughput and delay for the cooperative cluster.
{"title":"Implementation and Performance Evaluation of Network Coding for Cooperative Mobile Devices","authors":"M. Pedersen, F. Fitzek","doi":"10.1109/ICCW.2008.22","DOIUrl":"https://doi.org/10.1109/ICCW.2008.22","url":null,"abstract":"In this work a performance evaluation of network coding for cooperative wireless networks is carried out. Implementing network coding on commercially available mobile devices, the performance is presented in terms of throughput, delay and energy consumption. In contrast to purely cellular systems, where the mobile devices are only connected to the base station, in cooperative wireless networks, the mobile device, in addition to the cellular communication, establishes short range links to neighboring mobile devices within its proximity. In prior work it has been shown that the newly formed cooperative cluster, also referred as wireless grid, can offer each participating mobile device a better performance in terms of data rate, delay, robustness, security, and energy consumption in contrast to any stand alone device. To improve the performance within the cooperative cluster even more, network coding seems to be a promising technology as it decreases the number of packets to be interchanged among cooperative mobile devices leading to a decreased packet delay. The energy saved by fewer packet transmissions is confronted with the energy needed to carry out the network coding and related overhead. The findings of this paper show that network coding is always beneficial in terms of throughput and delay for the cooperative cluster.","PeriodicalId":360127,"journal":{"name":"ICC Workshops - 2008 IEEE International Conference on Communications Workshops","volume":"136 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115857748","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}
In this paper we propose a method to modify chirp waveforms in cognitive ultra wideband (UWB) system. By utilizing the time-frequency relationship of the chirp waveform, we can avoid the spectrum authorized to other existing systems. After estimating other applications in the electromagnetic environment, the adaptive waveform generation is adopted which adapts to the changing wireless environment and synthesizes chirp waveform features in the time domain. Therefore, coexistence with other applications can be accomplished. Furthermore, the proposed scheme can avoid the frequency-time transform that can increase the system complexity. Computer simulations with additive white Gaussian noise successfully demonstrate an increase in performance with the proposed system as compared to traditional linear chirp systems for cognitive UWB systems.
{"title":"Modified Chirp Waveforms in Cognitive UWB System","authors":"Hanbing Shen, Weihua Zhang, K. Kwak","doi":"10.1109/ICCW.2008.101","DOIUrl":"https://doi.org/10.1109/ICCW.2008.101","url":null,"abstract":"In this paper we propose a method to modify chirp waveforms in cognitive ultra wideband (UWB) system. By utilizing the time-frequency relationship of the chirp waveform, we can avoid the spectrum authorized to other existing systems. After estimating other applications in the electromagnetic environment, the adaptive waveform generation is adopted which adapts to the changing wireless environment and synthesizes chirp waveform features in the time domain. Therefore, coexistence with other applications can be accomplished. Furthermore, the proposed scheme can avoid the frequency-time transform that can increase the system complexity. Computer simulations with additive white Gaussian noise successfully demonstrate an increase in performance with the proposed system as compared to traditional linear chirp systems for cognitive UWB systems.","PeriodicalId":360127,"journal":{"name":"ICC Workshops - 2008 IEEE International Conference on Communications Workshops","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123805587","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}
A novel H.264 frame layer bit allocation scheme based on block histogram difference (BH) is proposed. First, the sufficiency of channel bandwidth is considered at the beginning of each scene. Then, the target bits for each frame are weighted by the relative complexity measurement based on BH. Experimental results show proposed algorithm can adapt to different relationships between channel bandwidth and encoding complexity of video sequence, and achieves better trade-off between channel bandwidth and compressed video quality.
{"title":"H.264 Frame Layer Rate Control Based on Block Histogram Difference","authors":"Tian Lan, Xuemai Gu","doi":"10.1109/ICCW.2008.59","DOIUrl":"https://doi.org/10.1109/ICCW.2008.59","url":null,"abstract":"A novel H.264 frame layer bit allocation scheme based on block histogram difference (BH) is proposed. First, the sufficiency of channel bandwidth is considered at the beginning of each scene. Then, the target bits for each frame are weighted by the relative complexity measurement based on BH. Experimental results show proposed algorithm can adapt to different relationships between channel bandwidth and encoding complexity of video sequence, and achieves better trade-off between channel bandwidth and compressed video quality.","PeriodicalId":360127,"journal":{"name":"ICC Workshops - 2008 IEEE International Conference on Communications Workshops","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122893150","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}
Detecting and measuring the changes of temporal traffic patterns in large scale networks are crucial for effective network management. This paper presents the concept of region flow to aggregate traffic packets. Regions are defined by the IP prefix, and a region flow is a group of packets with the same source and destination region during a time interval. In this way, the number of flows can be reduced significantly and a better extraction of pivotal traffic metrics is generated. Three traffic features: source connection degree, destination connection degree and packet distribution ratio are proposed to capture the dynamic change of the flow patterns between regions and the Renyi cross entropy are applied to measure and detect the changes. The experimental results show that the method proposed in this paper can capture the dynamic traffic features effectively for 10Gbps backbone networks, and can be used for detecting abnormal network behaviors.
{"title":"Dynamic Features Measurement and Analysis for Large-Scale Networks","authors":"Tao Qin, X. Guan, Wei Li, P. Wang","doi":"10.1109/ICCW.2008.45","DOIUrl":"https://doi.org/10.1109/ICCW.2008.45","url":null,"abstract":"Detecting and measuring the changes of temporal traffic patterns in large scale networks are crucial for effective network management. This paper presents the concept of region flow to aggregate traffic packets. Regions are defined by the IP prefix, and a region flow is a group of packets with the same source and destination region during a time interval. In this way, the number of flows can be reduced significantly and a better extraction of pivotal traffic metrics is generated. Three traffic features: source connection degree, destination connection degree and packet distribution ratio are proposed to capture the dynamic change of the flow patterns between regions and the Renyi cross entropy are applied to measure and detect the changes. The experimental results show that the method proposed in this paper can capture the dynamic traffic features effectively for 10Gbps backbone networks, and can be used for detecting abnormal network behaviors.","PeriodicalId":360127,"journal":{"name":"ICC Workshops - 2008 IEEE International Conference on Communications Workshops","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128652538","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}
Grids are systems that involve coordinate resource sharing and problem solving in heterogeneous dynamic environments. In order to make grids effective it is necessary to provide them with the capability of dealing with uncertainties on resource availability and estimation of applications computational and communications demands. This paper presents a procedure for self-adjusting the resources allocated to an application and a scheduler which takes into consideration the uncertainties on the estimation of applications demands. Moreover, a brief survey of resource allocation schemes in different existing grids is provided.
{"title":"Empowering Grids with Flexibility to Cope with Uncertainties","authors":"D. Batista, N. D. da Fonseca","doi":"10.1109/ICCW.2008.48","DOIUrl":"https://doi.org/10.1109/ICCW.2008.48","url":null,"abstract":"Grids are systems that involve coordinate resource sharing and problem solving in heterogeneous dynamic environments. In order to make grids effective it is necessary to provide them with the capability of dealing with uncertainties on resource availability and estimation of applications computational and communications demands. This paper presents a procedure for self-adjusting the resources allocated to an application and a scheduler which takes into consideration the uncertainties on the estimation of applications demands. Moreover, a brief survey of resource allocation schemes in different existing grids is provided.","PeriodicalId":360127,"journal":{"name":"ICC Workshops - 2008 IEEE International Conference on Communications Workshops","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117094664","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}
The IEEE 802.22 standard based on cognitive radio is envisioned as one of the solutions that can harness the unused or under-utilized spectrum that was primarily been allocated for licensed TV services. This allows the cognitive radio enabled devices to opportunistically use the spectrum without spatial and temporal interference with the licensed devices. Alongside, the success of wireless mesh networks is enabling the possibility of creating wide-area wireless back-haul networks that will have increased network resource utilization and better performance. In this paper, we study the limitations of the current IEEE 802.22 MAC in mesh establishment and propose a coordinated distributed scheme for IEEE 802.22 enabled devices to establish a mesh network with reduced latency and control signaling. The coordination is initiated by the base station and is followed by the gradual joining of the IEEE 802.22 consumer premise equipments to the mesh network in a repeated, distributed manner. Through extensive simulation experiments, we demonstrate how the proposed mesh creation algorithm helps minimize mesh initialization latency, reduce control signaling, reduce start-up delay, reduce collisions during network initialization, and most importantly, increase spectrum utilization among IEEE 802.22 devices.
{"title":"A Coordinated Distributed Scheme for Cognitive Radio Based IEEE 802.22 Wireless Mesh Networks","authors":"S. Sengupta, M. Chatterjee, R. Chandramouli","doi":"10.1109/ICCW.2008.93","DOIUrl":"https://doi.org/10.1109/ICCW.2008.93","url":null,"abstract":"The IEEE 802.22 standard based on cognitive radio is envisioned as one of the solutions that can harness the unused or under-utilized spectrum that was primarily been allocated for licensed TV services. This allows the cognitive radio enabled devices to opportunistically use the spectrum without spatial and temporal interference with the licensed devices. Alongside, the success of wireless mesh networks is enabling the possibility of creating wide-area wireless back-haul networks that will have increased network resource utilization and better performance. In this paper, we study the limitations of the current IEEE 802.22 MAC in mesh establishment and propose a coordinated distributed scheme for IEEE 802.22 enabled devices to establish a mesh network with reduced latency and control signaling. The coordination is initiated by the base station and is followed by the gradual joining of the IEEE 802.22 consumer premise equipments to the mesh network in a repeated, distributed manner. Through extensive simulation experiments, we demonstrate how the proposed mesh creation algorithm helps minimize mesh initialization latency, reduce control signaling, reduce start-up delay, reduce collisions during network initialization, and most importantly, increase spectrum utilization among IEEE 802.22 devices.","PeriodicalId":360127,"journal":{"name":"ICC Workshops - 2008 IEEE International Conference on Communications Workshops","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121906185","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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