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This paper investigates resource allocation algorithms that use limited communication - where the supplier of a resource broadcasts a coordinating signal using one bit of information to users per iteration. Rather than relay anticipated consumption to the supplier, the users locally compute their allocation, while the supplier measures the total resource consumption. Since the users do not compare...
Resource allocation plays an important role in orthogonal frequency division multiplexing (OFDM) based relaying systems. In this paper, we jointly consider power allocation (PA) and subcarrier pairing (SP) in a relaying system in which a source node sends OFDM signals to a destination node with the help of a full-duplex (FD) relay node. Under individual power constraints at both the source node and...
Distributed control and decision making increasingly play a central role in economical and sustainable operation of cyber-physical systems. Nevertheless, the full potential of the technology has not yet been fully exploited in practice due to communication limitations of real-world infrastructures. This work investigates the fundamental properties of gradient methods for distributed optimization,...
We consider the physical layer security for the downlink system, where the confidential messages can be wiretapped by both the intended users (IUs) and the external eavesdroppers (EEs). Regularized channel inversion (RCI) precoding is adopted for multiuser communication because it can control the mutual information leakage among users. And, to enhance the secrecy performance, artificial noise (AN)...
A multi-carrier one-way relay network is considered, in which a source wishes to send information to a destination via a full-duplex amplify-and-forward relay. We perform power allocation across different subcarriers for the source and the relay, as well as subcarrier pairing at the relay, so as to maximize the achievable sum rate subject to individual power budget constraint at each transmit node,...
Typical coordination schemes for future power grids require two-way communications. Since the number of end power-consuming devices is large, the bandwidth requirements for such two-way communication schemes may be prohibitive. Motivated by this observation, we study distributed coordination schemes that require only one-way limited communications. In particular, we investigate how dual descent distributed...
As independent service providers shift from conventional energy to renewable energy sources, the power distribution system will likely experience increasingly significant fluctuation in supply, given the uncertain and intermittent nature of renewable sources like wind and solar energy. These fluctuations in power generation, coupled with time-varying consumer demands of electricity and the massive...
In this paper, we focus on resource allocation for distributed broadband heterogeneous networks. Considering the fairness among different users, using the game-theoretic diagram, a fair resource allocation scheme is proposed first under each mobile user's minimal rate constraint. Then, an optimal power allocation algorithm is derived based on the Lagrange optimization method. To further improve the...
Timetabling Problem (TP) relates to quality of education and the utilization of teaching resources with the further reform in teaching and growing expansion of recruitment scale in colleges and universities. Firstly, TP was detailedly analyzed, includes: timetabling objective, main influencing factors, constraint conditions and solving target. And then, an optimized mathematical model of TP was established,...
One of the main challenges in Grid is efficient discovery of resources to the tasks submitted by users. Due to the lack of centralized control and the dynamic nature of resource availability, any successful discovery mechanism should be highly distributed and robust to the change in the Grid environment. In this paper, a research of resource discovery in a Grid environment has made on theory. We present...
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