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This paper analyzes a spectrum reuse scheme based on region division for secondary users in cognitive radio networks with outage constraint of the primary user. The secondary users can reuse the spectrum by sharing the primary user's uplink (UL) frequency resources in the system. With the help of the stochastic geometry, the secondary user reusing the frequency spectrum can be modeled as the probability...
This paper analyzes a spectrum access scheme based on region division for Device-to-Device (D2D) communication underlaying cellular networks with outage constraint for cellular communication. The D2D pairs will access the spectrum by sharing the cellular uplink (UL) frequency resources in the networks. By utilizing stochastic geometry, D2D accessing the frequency spectrum can be modeled as the probability...
This article presents the solution for geographical coordinates of satellite beam coverage area at any time by acquiring the track of sub-satellite points. As satellite traffic intensity is related to the geographical area type and access time, we infer the variation law of traffic intensity and the corresponding parameter expressions when satellite revolves to different geographical areas. Finally,...
Relay is a type of application of Device-to-Device (D2D) communication which could optimize the system capacity over the shared uplink (UL) resources while fulfilling prioritized cellular service constrains. In this paper, we consider D2D communication for relay purpose assists User Equipments (UEs) to communicate with Base Station (BS). For constraining the interference from D2D communication to...
This paper presents the h-refinement analysis of a novel fully overlapping domain decomposition approach. It was recently proposed for finite element modeling of small antenna features placed within a large non-metallic platform. The essence of the approach is to decouple a single domain containing small details from the background domain. This method avoids ill-conditioned matrices for iterative...
This paper presents a model suitable to performance analysis of a rotary power flow controller (RPFC), which operates in a two lines power system corridor. The RPFC consists of two transformers (one series and one shunt), and two rotary phase-shifting transformers operating in standstill. The shunt and series transformers, and the two rotary phase-shifting transformers are represented by the conventional...
The algorithms and basic equations used in the ldquoPMDSrdquo code for efficient coil design are described. The code calculates stresses and heating in the mid-plane only; there they are highest. The pulse shape is calculated for a capacitor discharge and for a voltage waveform derived from a generator. As examples, the optimization of a monolithic coil and a dual magnet are discussed, the latter...
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