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2011 Third International Conference on Communications and Mobile Computing最新文献

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The Analysis and Optimization on M-commerce Secure Payment Model 移动商务安全支付模型的分析与优化
2011 Third International Conference on Communications and Mobile Computing Pub Date : 2011-04-18 DOI: 10.1109/CMC.2011.35
Wei Jianping
{"title":"The Analysis and Optimization on M-commerce Secure Payment Model","authors":"Wei Jianping","doi":"10.1109/CMC.2011.35","DOIUrl":"https://doi.org/10.1109/CMC.2011.35","url":null,"abstract":"The M-Commerce has incomparable superiorities compared with traditional e-commerce. And at the same time, it has brought forward higher request of the security. The thesis analyzes the business model of M-Commerce secure payment, the SeMoPS model, and puts forward optimizing the business process of SeMoPS model combining the consideration of the security threats that M-Commerce has faced . In this way, customers can enjoy more convenient mobile payment service without worrying about the escaping of private information and transaction data.","PeriodicalId":263741,"journal":{"name":"2011 Third International Conference on Communications and Mobile Computing","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115821708","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}
引用次数: 5
Experimental Study on Improving the Accuracy of Radar Measurement Approach 提高雷达测量方法精度的实验研究
2011 Third International Conference on Communications and Mobile Computing Pub Date : 2011-04-18 DOI: 10.1109/CMC.2011.51
Mingyi Zhu, Jiamin Zhang
{"title":"Experimental Study on Improving the Accuracy of Radar Measurement Approach","authors":"Mingyi Zhu, Jiamin Zhang","doi":"10.1109/CMC.2011.51","DOIUrl":"https://doi.org/10.1109/CMC.2011.51","url":null,"abstract":"In order to improve the accuracy of radar measurement, mobile radar waves are generally carried out refraction error correcting. At present, there are two refraction error correction methods. One method has high accuracy, but the calculation speed of it is too slow to apply real-time calculation. The other one is very fast, but the use of the simplified model makes the accuracy very poor, so it is hard to meet the needs of future high-precision measurement and control. Therefore, this paper proposes the fast algorithm of wave refraction error in a mobile radar system, which is based on the meteorological parameters of ground-based, and also inspects the precision. At the same time, it is proved that the fast algorithm can completely take the place of ray tracing method at 4 ° angle of elevation above, and has an important significance in improving the mobile radar measurement accuracy.","PeriodicalId":263741,"journal":{"name":"2011 Third International Conference on Communications and Mobile Computing","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116636518","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}
引用次数: 1
A Dynamic Cell Resource Reserving Handoff Control Algorithm 一种动态小区资源预留切换控制算法
2011 Third International Conference on Communications and Mobile Computing Pub Date : 2011-04-18 DOI: 10.1109/CMC.2011.84
Li-zhong Zhu, Zhenglin Yao, Hai-feng Guo
{"title":"A Dynamic Cell Resource Reserving Handoff Control Algorithm","authors":"Li-zhong Zhu, Zhenglin Yao, Hai-feng Guo","doi":"10.1109/CMC.2011.84","DOIUrl":"https://doi.org/10.1109/CMC.2011.84","url":null,"abstract":"Handoff block rate is a very important QoS (Quality of Service) indicator in mobile communication. In hard handoff, the conventional method of reducing handoff block is to reserve some channels especially for handoff mobile terminals in the cell or cell group. This is a static method. It can guarantee the handoff successful rate, but in the meantime, some resource of wireless channel is wasted. In this paper, a dynamic reserving channel resource algorithm has been put forward on accessing instantaneous process. It can improve the utility of wireless network resource. In the paper, this algorithm also is tested in simulating experiment. The results show that the algorithm is available.","PeriodicalId":263741,"journal":{"name":"2011 Third International Conference on Communications and Mobile Computing","volume":"125 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126865661","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}
引用次数: 0
Multichannel Cognitive MAC Protocol for Efficient Utilization of Wireless Spectrum 有效利用无线频谱的多通道认知MAC协议
2011 Third International Conference on Communications and Mobile Computing Pub Date : 2011-04-18 DOI: 10.1109/CMC.2011.124
Salman Khan, A. Khan, S. Akhtar
{"title":"Multichannel Cognitive MAC Protocol for Efficient Utilization of Wireless Spectrum","authors":"Salman Khan, A. Khan, S. Akhtar","doi":"10.1109/CMC.2011.124","DOIUrl":"https://doi.org/10.1109/CMC.2011.124","url":null,"abstract":"Rapid development of wireless technologies and services are increasing the demand of limited wireless spectrum. Fixed spectrum has been allocated to each application. Recent analysis shows that this scarce spectrum is not being utilized efficiently. Cognitive Radio (CR) is the developing solution of efficient spectrum utilization. Cognitive Radio is well aware of its environment and accesses the spectrum opportunistically. In this paper, we propose an efficient multichannel cognitive MAC protocol that learns the behavior of primary users on each channel and allows the secondary users to occupy the unused spectrum without any harmful interference with the primary user and with other secondary users. By using the probabilistic model, CR estimates each available channel and selects the best one for transmission. An OPNET 14 simulation scenario of coexistence of CR nodes and primary nodes of a wireless network is developed to evaluate its performance.","PeriodicalId":263741,"journal":{"name":"2011 Third International Conference on Communications and Mobile Computing","volume":"123 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122334465","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}
引用次数: 1
Blind Multiuser Detection in MC-CDMA: Schmidt-Orthogonalization and Subspace Tracking Kalman Filtering MC-CDMA盲多用户检测:施密特正交化和子空间跟踪卡尔曼滤波
2011 Third International Conference on Communications and Mobile Computing Pub Date : 2011-04-18 DOI: 10.1109/CMC.2011.50
Yinhui Yu, T. Li, Zhen Wang, Shi-hao Wang, Huichuan Zhang
{"title":"Blind Multiuser Detection in MC-CDMA: Schmidt-Orthogonalization and Subspace Tracking Kalman Filtering","authors":"Yinhui Yu, T. Li, Zhen Wang, Shi-hao Wang, Huichuan Zhang","doi":"10.1109/CMC.2011.50","DOIUrl":"https://doi.org/10.1109/CMC.2011.50","url":null,"abstract":"We consider multiuser detection (MUD) to combat multiple access interference (MAI), the detrimental impairment for a multi-carrier code division multiple access (MC-CDMA) system. The celebrated method of projection approximation subspace tracking deflation (PASTd) has been shown to achieve a good trade-off between performance and complexity. To further reduce the complexity and improve the performance especially in the presence of multi-path fading, we propose a new, adaptive, blind MUD algorithm by jointly exploiting the useful signal processing tools of Schmidt-orthogonalization and subspace Kalman-filtering. The improved algorithm, termed Schmidt-orthogonalized PASTd with subspace Kalman-filtering (SPASTd&K), not only performs well in single- and multi-path fading alike, but is also robust against parameter-mismatch, and particularly advantageous in the present of strong multiple access interference.","PeriodicalId":263741,"journal":{"name":"2011 Third International Conference on Communications and Mobile Computing","volume":"107 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116366842","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}
引用次数: 1
HARVEST: A Task-objective Efficient Data Collection Scheme in Wireless Sensor and Actor Networks HARVEST:无线传感器和行动者网络中任务-目标高效数据采集方案
2011 Third International Conference on Communications and Mobile Computing Pub Date : 2011-04-18 DOI: 10.1109/CMC.2011.122
M. Dong, K. Ota, Xu Li, Xuemin Shen, Song Guo, M. Guo
{"title":"HARVEST: A Task-objective Efficient Data Collection Scheme in Wireless Sensor and Actor Networks","authors":"M. Dong, K. Ota, Xu Li, Xuemin Shen, Song Guo, M. Guo","doi":"10.1109/CMC.2011.122","DOIUrl":"https://doi.org/10.1109/CMC.2011.122","url":null,"abstract":"In this paper, we study data fusion in Wireless Sensor and Actor Networks (WSANs). We propose an efficient data collection scheme, called HARVEST to collect data with an application-oriented Mobile Actor (MA). An MA is capable of saving energy of each sensor node and performing advanced computation functions based on the requests of various applications. We consider data collection application in agriculture scenario. An MA determines the next migration based on the uncertainty of sensory data provided by all n-hop neighbor nodes in HARVEST. The uncertainty is important for users to know unexpected events happened in a farmland, which they cannot cope with in advance. HARVEST, not only referring sensory data on immediate neighbors but also involving n-hop neighbors, leads total optimization of an MA's itinerary. The performance of HARVEST is evaluated by simulations of frost prediction which is a real-world application. It is shown that the total execution time of the MA can be reduced significantly while the efficiency of searching interests is maintained.","PeriodicalId":263741,"journal":{"name":"2011 Third International Conference on Communications and Mobile Computing","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121738596","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}
引用次数: 15
On the Performance of Multi-packet ARQ for Mobile Multicast 移动组播多包ARQ性能研究
2011 Third International Conference on Communications and Mobile Computing Pub Date : 2011-04-18 DOI: 10.1109/CMC.2011.69
Haibo Wang, H. Schwefel
{"title":"On the Performance of Multi-packet ARQ for Mobile Multicast","authors":"Haibo Wang, H. Schwefel","doi":"10.1109/CMC.2011.69","DOIUrl":"https://doi.org/10.1109/CMC.2011.69","url":null,"abstract":"In this paper, we present two novel ARQ schemes for mobile multicast, which utilize packet-combining to reduce the number of retransmissions. The spectral efficiency of these multicast ARQ schemes are optimized jointly with adaptive modulation and coding (AMC) under specific QoS constraints, and numerical results show that significantly gains can be achieved comparing to schemes without packet-combining. Delay analysis has also been fulfilled for adopting the proposed sub-optimal scheme in practical systems.","PeriodicalId":263741,"journal":{"name":"2011 Third International Conference on Communications and Mobile Computing","volume":"142 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134011315","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}
引用次数: 0
A Universal and Optimized Embedded System to Control Firing Angle of Thyristors with Double-Sided Isolation 一种通用且优化的双面隔离晶闸管烧成角控制嵌入式系统
2011 Third International Conference on Communications and Mobile Computing Pub Date : 2011-04-18 DOI: 10.1109/CMC.2011.79
M. U. Rafique
{"title":"A Universal and Optimized Embedded System to Control Firing Angle of Thyristors with Double-Sided Isolation","authors":"M. U. Rafique","doi":"10.1109/CMC.2011.79","DOIUrl":"https://doi.org/10.1109/CMC.2011.79","url":null,"abstract":"This paper describes the implementation of a double sided isolated, economical, easy to implement and optimized approach to design a digital firing angle control system for silicon controlled rectifiers (SCR) and triacs. Currently designed circuits for this purpose use keypads to take input from user and also use uneconomical ways to implement zero crossing circuitry. This proposed design eliminates the keypad and implements an economical and cost-effective solution that helps industrial as well as home users. The method proposed in this paper is of universal nature and improves the design by applying the double sided isolation and removes the pulse transformer that is not only expensive but also provides the means of magnetic coupling that may be harmful for the controller circuitry. The design proposed in this paper is of universal nature that can be used to control the home as well as industrial loads of either the AC system running either 50 Hz or 60 Hz standard or the DC system. In addition to that, proposed design is fully compatible with 50 Hz and 60 Hz power systems.","PeriodicalId":263741,"journal":{"name":"2011 Third International Conference on Communications and Mobile Computing","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134333981","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}
引用次数: 9
Novel Multiple Relay Selection Schemes in Two-Hop Cognitive Relay Networks 两跳认知中继网络中新的多中继选择方案
2011 Third International Conference on Communications and Mobile Computing Pub Date : 2011-04-18 DOI: 10.1109/CMC.2011.121
Jiali Xu, Haixia Zhang, D. Yuan, Q. Jin, Chengxiang Wang
{"title":"Novel Multiple Relay Selection Schemes in Two-Hop Cognitive Relay Networks","authors":"Jiali Xu, Haixia Zhang, D. Yuan, Q. Jin, Chengxiang Wang","doi":"10.1109/CMC.2011.121","DOIUrl":"https://doi.org/10.1109/CMC.2011.121","url":null,"abstract":"This paper studies multiple relay selection schemes in two-hop cognitive relay networks to maximize the signal-to-noise ratio (SNR) of the secondary receiver. We first formulate the relay selection as a nonlinear integral programming, and then propose two suboptimal methods, greedy scheme and hybrid scheme. Based on the sorted efficiency function, the greedy scheme selects the secondary relay nodes provided that the sum of the interference power does not exceed the interference power constraint (IPC) of the primary users. The hybrid scheme is proposed to overcome the performance degradation of the greedy scheme whose efficiency function is not the optimal ordering function. Numerical results indicate that the greedy scheme can sometimes, but not always, achieve the near-optimal SNR performance. The hybrid scheme always outperforms the greedy scheme and any best single scheme. Moreover, both the greedy scheme and hybrid scheme are of low complexity compared to the exhaustive scheme.","PeriodicalId":263741,"journal":{"name":"2011 Third International Conference on Communications and Mobile Computing","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132969098","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}
引用次数: 23
MASA+: An Improved MAC Scheme Based on MASA Algorithm MASA+:一种基于MASA算法的改进MAC方案
2011 Third International Conference on Communications and Mobile Computing Pub Date : 2011-04-18 DOI: 10.1109/CMC.2011.26
Wenbin Zhang, Xiaozong Yang, Shaochuan Wu, Jiayan Zhang
{"title":"MASA+: An Improved MAC Scheme Based on MASA Algorithm","authors":"Wenbin Zhang, Xiaozong Yang, Shaochuan Wu, Jiayan Zhang","doi":"10.1109/CMC.2011.26","DOIUrl":"https://doi.org/10.1109/CMC.2011.26","url":null,"abstract":"Multiple Access with Salvation Army Protocol (MASA) achieves the higher aggregate throughput than IEEE802.11DCF via packet salvaging at the MAC layer. The implementation of MASA is based on DCF specification. But the back off timer of SACK in MASA is different from that of DATA in DCF. The MASA selects (0, NAV) as the back off range of SACK, whereas DCF thinks the channel is busy in this duration. In Ad Hoc network, DCF is the most widely used MAC protocol, to the full extent of keeping compatible with DCF and retaining the merit of MASA, this paper proposes an Improved MAC scheme called MASA+. The simulation based on NS-2 shows that new scheme outperforms DCF in aggregate throughput.","PeriodicalId":263741,"journal":{"name":"2011 Third International Conference on Communications and Mobile Computing","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130909195","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}
引用次数: 0
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