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Collisions caused by hidden terminals can be one threaten to performance of contention based wireless MACs, especially in saturation condition. Polling based MACs suffer from low efficiency under low channel traffic load. This work presents a novel adaptive scheme for wireless MAC, which contends for channel in low traffic case, and switches dynamically to polling while traffic load becomes high....
Biometric recognition is emerging as a powerful means for automatically recognizing a person's identity with a higher reliability. Especially, multimodal biometric fusion techniques have received a lot of attention and interest in recent years. To improve the recognition rate of the singlemodal biometric system and to solve the small samples recognition problem, a multimodal biometric recognition...
Spatial reuse is critical for ad hoc network with limited bandwidth. Exposed terminals are refrained from transmitting in 802.11 like protocols and the network capacity is wasted in high-density ad hoc network. In this paper, we propose a new scheme named SB-FSMA/CA to mitigate the exposed terminals problem in static ad hoc network or mesh network. SB-FSMA/CA mitigates exposed terminals problem by...
In this paper, we address the topology control problem for wireless sensor network. WSN uses many-to-one communication model while ad hoc uses many-to-many communication model, this makes MST-based algorithms which are widely used for topology controlling in ad hoc not suitable for WSN topology control. We propose DSPT, a more power efficient topology control algorithm than traditional MST-based algorithms...
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