Pub Date : 2010-02-07DOI: 10.1109/ICISA.2010.5480542
Fatemeh Ayughi, K. Faez, Z. Eskandari
A wireless sensor network consists of some sensor nodes that can be effective tool gathering data in various environments. Clustering is one of the methods used to gather information in which sensor nodes are clustered into groups and in each group all sensors communicate only with cluster heads (CHs). CHs send the collected information to a Base Station. Since the energy of the sensors is limited and sending information in each time reduces the nodes' energy, optimal selecting a CH will be notably effective in decreasing energy consumption of the nodes and therefore increases the network life time. In this paper we present a clustering method to choose the CH in an optimal way without need for information of nodes' location, based on two parameters of the energy and number of neighbors, considering the mobility of the nodes. The considerable point in the results is that the performance of our algorithm is uniformly in the three cases.
{"title":"A non location aware version of modified LEACH algorithm based on residual energy and number of neighbors","authors":"Fatemeh Ayughi, K. Faez, Z. Eskandari","doi":"10.1109/ICISA.2010.5480542","DOIUrl":"https://doi.org/10.1109/ICISA.2010.5480542","url":null,"abstract":"A wireless sensor network consists of some sensor nodes that can be effective tool gathering data in various environments. Clustering is one of the methods used to gather information in which sensor nodes are clustered into groups and in each group all sensors communicate only with cluster heads (CHs). CHs send the collected information to a Base Station. Since the energy of the sensors is limited and sending information in each time reduces the nodes' energy, optimal selecting a CH will be notably effective in decreasing energy consumption of the nodes and therefore increases the network life time. In this paper we present a clustering method to choose the CH in an optimal way without need for information of nodes' location, based on two parameters of the energy and number of neighbors, considering the mobility of the nodes. The considerable point in the results is that the performance of our algorithm is uniformly in the three cases.","PeriodicalId":345901,"journal":{"name":"2010 The 12th International Conference on Advanced Communication Technology (ICACT)","volume":"141 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115127921","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 : 2010-02-07DOI: 10.1109/ICCCE.2010.5556774
R. Saeed, A. Naemat, A. bin Aris, M.K. Bin Awang
Wireless vehicular communications (WVC) has been identified as a key technology for intelligent transportation systems (ITS) for a few years ago. IEEE 802.11p is the proposed standard for physical and MAC layer of WVC devices. The main objective of the standard is to change the frame format and increase delay spread tolerance introduced by vehicle mobility, in which the channel bandwidth is scaled from 20 MHz i.e.802.11a to 10 MHz i.e. 802.11p. This paper proposes TDMA technique with fixed time slots and guard band between slots to ensure interoperability between wireless devices communicate in rapidly changing environment where transactions must be completed in small timeframe. The new TDMA sub-layer is proposed to be on-top of the conventional 802.11p MAC. The simulation results present the performance analysis and validate the efficiency of the proposed scheme.
{"title":"Design and evaluation of lightweight IEEE 802.11p-based TDMA MAC method for road side -to-vehicle communications","authors":"R. Saeed, A. Naemat, A. bin Aris, M.K. Bin Awang","doi":"10.1109/ICCCE.2010.5556774","DOIUrl":"https://doi.org/10.1109/ICCCE.2010.5556774","url":null,"abstract":"Wireless vehicular communications (WVC) has been identified as a key technology for intelligent transportation systems (ITS) for a few years ago. IEEE 802.11p is the proposed standard for physical and MAC layer of WVC devices. The main objective of the standard is to change the frame format and increase delay spread tolerance introduced by vehicle mobility, in which the channel bandwidth is scaled from 20 MHz i.e.802.11a to 10 MHz i.e. 802.11p. This paper proposes TDMA technique with fixed time slots and guard band between slots to ensure interoperability between wireless devices communicate in rapidly changing environment where transactions must be completed in small timeframe. The new TDMA sub-layer is proposed to be on-top of the conventional 802.11p MAC. The simulation results present the performance analysis and validate the efficiency of the proposed scheme.","PeriodicalId":345901,"journal":{"name":"2010 The 12th International Conference on Advanced Communication Technology (ICACT)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116122115","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 : 2010-02-07DOI: 10.3745/KIPSTD.2010.17D.4.245
Mi-Ra Park, Minkee Kim, Jun-Ki Min
In this paper, we propose an effective filtering method for skyline queries in mobile ad hoc networks (MANETs). Skyline query processing is important since skyline objects show interesting points from a large data set according to multiple criteria. Most skyline researches about wireless ad hoc network focus on optimizing the energy consumption due to the limited resource. But, most existing researches assume that data is uniformly distributed and do not consider data whose distribution is skewed in a specific region. In order to reduce the energy consumption, we propose a new filtering method considering the data distribution. We verify the performance of the proposed method through a comparative experiment with an existing method. The results of the experiment confirm that the proposed method reduces the communication overhead and execution time compared to the existing method.
{"title":"An effective filtering method for skyline queries in MANETs","authors":"Mi-Ra Park, Minkee Kim, Jun-Ki Min","doi":"10.3745/KIPSTD.2010.17D.4.245","DOIUrl":"https://doi.org/10.3745/KIPSTD.2010.17D.4.245","url":null,"abstract":"In this paper, we propose an effective filtering method for skyline queries in mobile ad hoc networks (MANETs). Skyline query processing is important since skyline objects show interesting points from a large data set according to multiple criteria. Most skyline researches about wireless ad hoc network focus on optimizing the energy consumption due to the limited resource. But, most existing researches assume that data is uniformly distributed and do not consider data whose distribution is skewed in a specific region. In order to reduce the energy consumption, we propose a new filtering method considering the data distribution. We verify the performance of the proposed method through a comparative experiment with an existing method. The results of the experiment confirm that the proposed method reduces the communication overhead and execution time compared to the existing method.","PeriodicalId":345901,"journal":{"name":"2010 The 12th International Conference on Advanced Communication Technology (ICACT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129324048","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}
Zhengping Li, Shu-Jun Guo, Yu-Hua Wang, Zhi-Hao Yang, M. Zhang
For the aloha based anti-collision algorithm in RFID networks, the tag collisions could greatly reduce the throughput of the system. If the number of tags was gotten, the throughput could be greatly improved. Based on maximum likelihood estimation, the proposed hybrid tag number estimation scheme combined the binary search based anti-collision algorithm and aloha based anti-collision algorithm to estimate the tag number. Simulation results showed that the proposed scheme had high estimation accuracy than the existing algorithm.
{"title":"A hybrid tag number estimation scheme for aloha based anti-collision algorithm in RFID networks","authors":"Zhengping Li, Shu-Jun Guo, Yu-Hua Wang, Zhi-Hao Yang, M. Zhang","doi":"10.1049/CP.2011.0767","DOIUrl":"https://doi.org/10.1049/CP.2011.0767","url":null,"abstract":"For the aloha based anti-collision algorithm in RFID networks, the tag collisions could greatly reduce the throughput of the system. If the number of tags was gotten, the throughput could be greatly improved. Based on maximum likelihood estimation, the proposed hybrid tag number estimation scheme combined the binary search based anti-collision algorithm and aloha based anti-collision algorithm to estimate the tag number. Simulation results showed that the proposed scheme had high estimation accuracy than the existing algorithm.","PeriodicalId":345901,"journal":{"name":"2010 The 12th International Conference on Advanced Communication Technology (ICACT)","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130525434","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 : 2007-12-01DOI: 10.1109/ICCITECHN.2007.4579447
M. Alam, K. Ahmed, B.K.M. Mizanur Rahman, S. Majumder
Theoretical performance analysis is presented for an optical transmission system with RF subcarriers multiplexing (SCM) for radio on fiber technology considering the effect of PM-IM conversion due to Mach-zehnder modulator (MZM) and optical beat interference (OBI) generated during photodetection process. The computed bit error rate (BER) performance results show that there is a significant deterioration in system BER due to OBI and PM-IM conversion and the system suffers significant power penalty at a given BER. The penalty is found to be approximately 5.8 dB, 11.0 dB, 13.5 dB, 15.0 dB, 17.0 dB for PM-IM conversion factor of −1, −2, −3, −4, −5 and 18.0 dB, 18.5 dB, 20.5 dB, 21.5 dB, 22.0 dB for number of subcarriers of 2, 4, 8, 16, 32 respectively.
{"title":"Performance limitations of a subcarrier multiplexed optical fiber link impaired by optical bit interference and intensity noise","authors":"M. Alam, K. Ahmed, B.K.M. Mizanur Rahman, S. Majumder","doi":"10.1109/ICCITECHN.2007.4579447","DOIUrl":"https://doi.org/10.1109/ICCITECHN.2007.4579447","url":null,"abstract":"Theoretical performance analysis is presented for an optical transmission system with RF subcarriers multiplexing (SCM) for radio on fiber technology considering the effect of PM-IM conversion due to Mach-zehnder modulator (MZM) and optical beat interference (OBI) generated during photodetection process. The computed bit error rate (BER) performance results show that there is a significant deterioration in system BER due to OBI and PM-IM conversion and the system suffers significant power penalty at a given BER. The penalty is found to be approximately 5.8 dB, 11.0 dB, 13.5 dB, 15.0 dB, 17.0 dB for PM-IM conversion factor of −1, −2, −3, −4, −5 and 18.0 dB, 18.5 dB, 20.5 dB, 21.5 dB, 22.0 dB for number of subcarriers of 2, 4, 8, 16, 32 respectively.","PeriodicalId":345901,"journal":{"name":"2010 The 12th International Conference on Advanced Communication Technology (ICACT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130485314","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：