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Many broadcast protocols have been proposed in Vehicular ad-hoc Network (VANET) for safety applications and traffic efficiency. GeoBroadcast, which the sender sends information to the geographical area, has been standardized by the ETSI Technical Committee ITS. The routing protocol is a key technology satisfying communication requests of high reliability, low delay and universality for GeoBroadcast...
Exploration of user generated content in the epoch of Web 2.0 brings unprecedented challenge to the social computing, which has to provide real-time solution in the circumstance of massive data volumes and evolving application scenarios. This paper presents an emotion-based social computing platform namely ESC for streaming big-data. The main aim of ESC is to provide sentiment analysis as the foundation...
Enterprise networks have become increasingly important with the rising number of users accessing their services, which consequently brings challenges in various aspects. Though Open Flow, the promising scheme for enterprise network control, can provide fine-grained and flow-level control in networks, yet it still has a few undesirable designs in security, scalability and performance. Inspired by many...
In this paper, we investigate the effects of channel estimation errors on the performance of turbo decoding over fully interleaved Rayleigh fading channels. It has been proven that the Max-Log-MAP decoder is independent of any channel parameter, no matter with perfect or imperfect channel estimates. Further, we propose a robust method for turbo decoding over Rayleigh fading channels by applying the...
In this paper, we investigate the signal-to-noise ratio (SNR) sensitivity of the Log-MAP turbo decoder over Rayleigh fading channels. It is shown that the use of the channel reliability factor proposed by Frenger is equivalent to an SNR underestimation when the channel estimate is not perfect. In addition, we propose s simplified method to compute the channel reliability factor, which leads to reduction...
With the development of grid techniques and the growing complexity of grid applications, reasoning the temporal properties of grid application to ensure its reliability is becoming more and more critical. In this work, two decomposition approaches are proposed to improve the performance of the temporal reasoning of complex grid applications. The proposed approaches are implemented in our GridPiAnalyzer...
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