OFDM systems suffer from inter-carrier interference when they are used in mobile environment due to the appearance of Doppler frequency produced by the movement of the terminals. Recently, different schemes have been ...
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ISBN:
(纸本)9780769533933
OFDM systems suffer from inter-carrier interference when they are used in mobile environment due to the appearance of Doppler frequency produced by the movement of the terminals. Recently, different schemes have been proposed in the scientific literature in order to cancel this type of interference. this paper deals withthe improvement of these methods, it will be shown that our approach is able to achieve better results. Moreover, we propose to perform the signal processing only on the transmitter side allowing a reduction of the receiver complexity without any performance degradation.
In the EDBMGIS (embedded Database Based Mobile Geospatial Information Service) architecture application, the data of embedded database in the mobile terminal is duplicated from the server. After a period's system ...
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ISBN:
(纸本)9781424421077
In the EDBMGIS (embedded Database Based Mobile Geospatial Information Service) architecture application, the data of embedded database in the mobile terminal is duplicated from the server. After a period's system operation, data in boththe mobile client and server will be changed. In order to keep the data consistency, the synchronization of data on both side is discussed in this paper. In addition, a tiered replication model which is put forward to solve the synchronization problem under 3-tier replication architecture (Mobile client- Synchronization Server Database Server). this model utilizes a novel double time-stamp strategy to promote the efficiency of synchronization. Besides, it ensures serializability and consistency of the mobile database system through transaction-level conflict reconciliation.
Advances in wireless communication and mobile computing and networking are providing us with growing business opportunities and demands for multimedia services. Consumer networks, increasingly used for multimedia info...
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this article contains a review of technical literature relating the definitions, characteristics, operations, security management, service governance, and development trends of cloud computing. the advantages and disa...
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ISBN:
(纸本)9780769548524;9781467330930
this article contains a review of technical literature relating the definitions, characteristics, operations, security management, service governance, and development trends of cloud computing. the advantages and disadvantages of cloud computing are respectively described to represent the impacts of cloud computing in various fields. the article also explains the structure of clouds in service-oriented architectures and summarizes six major development trends, which can be utilized as a reference for entrepreneurs and researchers.
A data parallel computer architecture model based on the reconfigurable bus is ***,for the problems existing in the modern multimedia processing,one dimensional processing element array architecture based on the recon...
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ISBN:
(纸本)9781467349970
A data parallel computer architecture model based on the reconfigurable bus is ***,for the problems existing in the modern multimedia processing,one dimensional processing element array architecture based on the reconfigurable bus is put forward;secondly,the communication module and the data transmission mode between each processing element are designed,namely,a design based on a reconfigurable bus;finally,test and verification of several commonly-used image processing algorithms indicate that one dimensional SIMD architecture based on the reconfigurable bus is logically feasible.
Many audio and multimedia applications would benefit if they could interpret the content of audio rather than relying on descriptions or keywords. these applications include multimedia databases and file systems, digi...
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this paper presents a new embedded hardware architecture for real-time Electrical Capacitance Tomography (ECT). It consists of different two modules which consist of a capacitance data acquisition and switching board ...
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ISBN:
(纸本)9781479925438
this paper presents a new embedded hardware architecture for real-time Electrical Capacitance Tomography (ECT). It consists of different two modules which consist of a capacitance data acquisition and switching board and a Field Programmable Gate Array (FPGA) board which performs the image reconstruction task. Experimental results indicate that that a throughput of 17 Kframes/sec for the Linear-Back Projection (LBP) algorithm with 200 iterations could be achieved. this satisfies the real-time constraint of many industrial applications.
the broad implementation of cloud computing and Internet-of-things (IoT) is driving current networking control system towards an advanced level. Mobile computing further increases the complexity of the deployment. How...
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ISBN:
(纸本)9781538643990
the broad implementation of cloud computing and Internet-of-things (IoT) is driving current networking control system towards an advanced level. Mobile computing further increases the complexity of the deployment. However, the complicated system also has brought more privacy issues into the field. One of the problems of obstructing mobile apps is that contemporary coarse-grained access control embedded in the operating system provides limited privacy protections. As an emerging technique, edge computing is an alternative for speeding up manipulations and tying up the connected devices via the enhanced utilization of the computing resource and the strengthened flexibility/ability of the control. In this paper, we propose a novel privacy-preserving approach that uses a multi-layer access control in edge computing to enhance the level of the privacy protection. Our approach models a hierarchical classification deriving from the protection objectives. Experiment evaluations accomplished by this work also provide evidence for demonstrating the adaptability of our approach.
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