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The Internet of Things connects physical objects through sensor devices with multiple functionalities. At the planning stage of deploying an IoT system, we are concerned about sensor selection in the IoT system, which allocates predefined IoT services to multiple sensor devices so as to optimize one or more objectives associated with these allocations, under energy and distance constraints. The sensor...
Energy and water are coupled in urban industrial systems in terms of energy-water nexus, playing key roles to sustain a city. This work proposed an environmental input-output analysis based methodological model to depict the nexus and reflect its dualistic impacts on the nature, which was applied into Beijing's case. Results show the agriculture and manufacturing sectors had the higher nexus intensities,...
Mobile advertising is growing faster than any other part of the advertising business. As mobile users and time spent on mobiles devices grow, most advertisements will soon be served on mobile devices. Advertisers are turning to geospatial data to target users, because it provides a unique way of identifying and targeting users beyond the data available on typical desktop devices. Advertising networks...
In this paper, we study a water-filling power allocation scheme in large M × N MIMO systems over flat Rayleigh fading channels. It is shown that when M = N with sufficiently large M, the channel capacity of the water-filling scheme almost converges to a constant regardless of channel randomness. Moreover, it is proved that for the water-filling scheme, the required channel information at the transmitter...
The third generation (3G) cellular system supports multimedia traffic with much larger system capacity than its predecessors. The wideband code division multiple access (WCDMA) (J.K.F.O.E. Dahlman et al., 1998)-(T.O.R. Prasad, 1998) is one of the most prominent wireless communication techniques in 3G. To meet the certain quality of service (QoS) (D.W. Negi) requirements for various traffic types is...
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