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Based on the magnetic circuit method for each component, consider the influence of leakage flux between coils and armatures, establish the equivalent magnetic circuit model of a certain type of magnetic latching relay and get the static attractive force curve. Pick targets for the parameter design by matching the attraction and reaction forces. Use robustness as the parameter design method to optimize...
We present a distributed Coordination Area (CA) formation method for defining cooperating cells for Coordinated Multi-Point (CoMP) transmissions. We divide the available system resources into multiple resource shifts and assume independent CA realizations on different resource shifts. The ulti-shift CA formation method is self-organized based on the interference situations and the traffic profile...
We consider Device-to-Device (D2D) communication underlaying cellular networks to improve local services. The system aims to optimize the throughput over the shared resources while fulfilling prioritized cellular service constraints. Optimum resource allocation and power control between the cellular and D2D connections that share the same resources are analyzed for different resource sharing modes...
We consider distributed Inter-Cell Interference Coordination based on rate splitting and interference cancellation. Link adaptation is performed based on Channel Quality Information both on the desired link and on links towards interference victims. A transmitted message is split into a private and a public part. The private part is decodable only by the intended receiver, whereas the public part...
We consider the SINR variation generated by the change of spatial interference pattern in a cellular communication system, which is especially severe when using adaptive array for transmission. In this paper, we derive the distribution of SINR variation at the output of Interference Rejection Combining (IRC) and Maximum Ratio Combining (MRC) receivers, assuming equal-power interferers. The analysis...
We study the rate adaptation of a combined system with Adaptive Modulation and Coding (AMC) and Hybrid ARQ (HARQ) in the presence of Channel Quality Indicator (CQI) errors. An average BLock Error Rate (BLER) is imposed to maintain a target error rate. We formulate a generic average throughput expression that accommodates the possible CQI errors. The generic expression is adapted to different forms...
Device-to-Device communication underlaying a cellular network enables local services with limited interference to the cellular network. In this paper we study the optimal selection of possible resource sharing modes with the cellular network in a single cell. Based on the learning from the single cell studies we propose a mode selection procedure for a multi-cell environment. Our evaluation results...
We consider Device-to-Device (D2D) communications underlaying a cellular network to accommodate local services. The system aims to optimize the overall cell throughput while giving priority to the cellular service. In this paper, we study the impact of a fading environment to a D2D enabled cellular network. The results show that the system experiences an increased cellular service outage probability...
We address resource sharing of the cellular network and a device-to-device (D2D) underlay communication assuming that the cellular network has control over the transmit power and the radio resources of D2D links. We show that by proper power control, the interference between two services can be coordinated to benefit the overall performance. In addition, we consider a scenario with prioritized cellular...
We address device-to-device (D2D) communication as a potential resource reuse technique underlaying the cellular network. We consider the shared channel of the two systems as an interference channel and formulate the statistics of the signal to interference plus noise ratio (SINR) of all users. The potential performance of D2D communication is evaluated by considering a scenario where only limited...
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