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Content caching is an efficient technique to reduce delivery latency and system congestion during peak-traffic times by bringing data closer to end users. Existing works consider caching only at higher layers separated from physical layer. In this paper, we study wireless caching networks by taking into account cache capability when designing the signal transmission. In particular, we investigate...
We describe an empirical study findings on the impact of throughput performance when transmission power is adjusted among access points in close-proximity network devices. The experiment was conducted in an office environment to emulate a dense wireless LAN network. We introduce a power adjustment mechanism based on cognitive learning one of the attributes which then triggers the power selection....
As a substantial means for improving throughput, network coding has recently attracted much attention to applying in wireless multicast services. To combat the channel fading of different users in a multicast group, the two-stage cooperative multicast is one of the most promising schemes. At the 1st stage, the users successfully receiving data from the base station can serve as relays to forward the...
By utilizing the multi-channel technology and small world properties, the average path length of a wireless network can be reduced drastically, leading to a significant improvement of network performance. By upgrading a fraction of nodes into the high-level nodes with multi interfaces and higher transmission powers, small world effect can be introduced owing to the short-cuts created by the high-level...
The paper considers cellular networks, where clients may cooperate to relay packets for each other. Client relay technology is a cross-layer channel-aware technique that may dramatically improve throughput, energy efficiency, and delay performance of modern and future wireless networks, such as IEEE 802.16m and LTE-Advanced. The proposed basic system model is the simplest client relay scenario under...
Power consumption in office networks has become a major issue due to its running cost. In order to reduce the power consumption, several approaches have been proposed such as Energy Efficient Ethernet (EEE) and Energy Efficient Wireless aggregation (EEW). In this research, we develop an analytical model and apply the model to evaluate and compare performance of the existing technologies. The parameters...
This paper studies energy and throughput performance of cooperative routing in wireless networks that support cooperative beamforming at the physical layer. Cooperative beamforming is a form of cooperative communication in which multiple nodes each equipped with a single omnidirectional antenna coordinate their transmissions in such a way that the individual signals constructively combine at the intended...
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