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—Scarcity of the spectrum resource and mobility of users make Quality-of-Service (QoS) provision a critical issue in wireless networks. This paper presents a fuzzy call admission control scheme to meet the requirement of the QoS. It searches automatically the optimal number of the guard channels in a base station to make an effective use of resource and(More)
Existing personalized recommendation systems are facing many problems such as cold start, data sparseness and high complexity. Users' interests exist more widely and are more personalized compared with purchasing history in traditional recommendation systems. Thus, applying the interest graph in the recommendation process can make up certain shortages. This(More)
Scarcity of the spectrum resource and mobility of users make quality-of-service (QoS) provision a critical issue in cellular mobile multimedia networks. This paper presents a fuzzy call admission control scheme to meet the requirement of the QoS while prioritizing handoff call requests over new call requests. It searches automatically the number of the(More)
In this paper, we present a novel multi-level design method to secure encryption algorithms against DPA attack. Generally, DPA-resistant methods can be mainly divided into two levels: software and hardware. Software-based countermeasures are relatively cheaper to put in place, while hardware-based methods counteract DPA at a lower level and achieve better(More)
This paper proposed a newly designed model to satisfy the growing demand of three-dimensional indoor positioning services. The existing different positioning services cannot meet the demand in our daily life, and the increasingly need of three-dimensional positioning services has attracted more attention. In this paper, we implement our analysis and(More)
With the development of China's Internet economy, the rapid rise of mobile media, the Internet has become the first entrance to the user access to information. The value of traditional media information portal is weakening. Media convergence is increasingly becoming the road of traditional media to survival and develops. The breakthrough of radio and(More)