Numerous emerging market organizations have entered the energy as a result of gradual expansion in reforms, resulting fierce competition among them. Meanwhile, deterioration environmental contamination and rising demands steadily gained prominence. Therefore, to solve problems pollution conflict interests multiple stakeholders integrated system (IES), this paper proposes novel collaborative optimization strategy for low-carbon economy IES based on carbon trading mechanism Stackelberg game...

We propose a tractable expression for the outage probability in single-cell uplink non-orthogonal multiple access (NOMA) systems serving an arbitrary number of users. The is obtained by approximating inter-user interference using shifted-gamma distributed random variable. then formulate and efficient iterative algorithm outage-constrained min-max power allocation problem NOMA system. To give rigorous comparison, we solve orthogonal (OMA) counterpart where both user radio resource division...

By analytically showing that index coding (IC) is more power efficient than superposition (SC) when appropriate caching contents are available for a pair of users, we propose sub-optimal joint user clustering and allocation scheme single-cell downlink non-orthogonal multiple access network with memory at the receivers alternate between IC SC. Simulation studies demonstrate proposed significantly reduces transmission compared benchmark only allows

Abstract Human‐induced disturbances such as dam construction and regulation have led to widespread alterations in hydrological processes thus substantially influence plant characteristics the hydro‐fluctuation zones (HFZs). To reveal utilization of limited resources mechanisms inter‐specific competition species co‐existence communities based on niche breadth overlap under different HFZs Three Gorges Reservoir (TGR) China, we conducted a field investigation with 368 quadrats effects diversity...

To obtain good network performance in Long Term Evolution-Advanced (LTE-A) heterogeneous networks (HetNets), enhanced inter-cell interference coordination (eICIC) and further eICIC (FeICIC) have been proposed by LTE standardization bodies to address the entangled user association problems. We propose distributed algorithms based on exact potential game framework for both FeICIC optimizations. demonstrate via simulations a 64% gain energy efficiency (EE) achieved another 17% EE FeICIC. also...

In view of the great contribution coal-fired units to CO2 emissions, coupled coal and power system with consideration mitigation is a typical sub-system highly emitting Chinese energy for low-carbon studies. this study, an inexact mix-integer two-stage programming (IMITSP) model management systems was developed based on integration multiple techniques. Uncertainties complexities related carbon issues in can be effectively reflected dealt model. An optimal strategy associated stochastic...

In erasure broadcast channels, network coding has been demonstrated to be an efficient way satisfy each user's demand. However, the channel model does not fully characterize information available in a "lost" packet, and therefore any retransmission schemes designed based on cannot make use of that information. this paper, we quality erroneous packets by Signal-to-Noise Ratio (SNR) then design scheme with knowledge SNRs packets, so user can immediately decode two source upon reception useful...

Reasonable planning of water delivery schedules for canal systems can reduce losses caused by seepage and improve the utilization efficiency irrigation water. Empirical methods scheduling usually cause problems such as insufficient discharge, excessively delayed delivery, large under given requirements. In this study, a model was set up, customized algorithm based on particle swarm optimization proposed. Typical heuristic algorithms often become trapped in local optima search inefficiently...

In Federated Learning (FL), two-way model exchanges are required between the server and workers every training round. Due to large size of machine learning models, communications them lead high delay economic cost. At present, communication-efficient FL methods, for examples, top-k sparsification quantization, taking advantages sparseness gradients fact that gradient-based updating can tolerance small deviations, effectively reduce communication cost single However, these schemes cannot be...

The user pairing problem for cache-based timeslotted non-orthogonal multiple access (NOMA) system with index coding is investigated. During each time slot, the packets of two users are scheduled at base station. In accordance different cache information users, either superposition or applied station transmission. For some specific case, superior performance on aspect power consumption compared to that analyzed. Besides, saving our design when NOMA pure also demonstrated in a mathematical...

We study a resource allocation problem for the uplink of virtualized massive multiple-input multiple-output system, where antennas at base station are priced and among service providers (SPs). The mobile network operator (MNO) who owns infrastructure decides price per antenna, Stackelberg game is formulated net profit maximization MNO, while minimum rate requirements SPs satisfied. To solve bi-level optimization we first derive closed-form best responses with respect to pricing strategies...

The problem of designing bit-to-pattern mappings and power allocation schemes for orthogonal frequency-division multiplexing (OFDM) systems that employ subcarrier index modulation (IM) is considered. We assume the binary source conveys a stream independent, uniformly distributed bits to pattern mapper, which introduces constraint on transmission probability distribution can be quantified using tree formalism. Under this constraint, we undertake task maximizing achievable rate subject...

With dual connectivity, a mobile user can be served by macro base station (MBS) and pico (PBS) simultaneously. In this paper, we address the problem of optimizing user-PBS association power allocation in uplink such that network serve users' demand at minimum cost, where PBSs are subject to backhaul capacity limitations rate requirements users. We show non-convex formulated as signomial geometric programming (SGP) whose solution found solving series (GP) problems. Simulation results provided...

Efficient scheduling policy is crucial in wireless networks due to delay-sensitivity of many emerging applications. In this work, we consider a joint user pairing and (UPaS) scheme for multi-carrier non-orthogonal multiple access (MC-NOMA)-enabled reduce the maximum completion time serving uplink users. The NOMA problem shown be NP-hard shortest processing (SPT)-based strategy solve same within affordable complexity introduced. simulation results confirm efficacy proposed terms comparison...

To optimize the network utility in 3GPP Long Term Evolution-Advanced (LTE-A) heterogeneous networks (HetNets), it is necessary to jointly consider inter-cell interference mitigation and user attachment. Based on potential game formulation, we almost blank subframe (ABS) and/or cell selection bias (CSB) settings for both macrocells picocells a distributed manner. We demonstrate need of joint ABS CSB optimization via simulation case studies. Extensive simulations confirm that optimizations can...

In this paper we propose a distributed algorithm for jointly optimizing almost blank subframe (ABS) and cell selection bias (CSB) patterns in Long Term Evolution- Advanced (LTE-A) heterogeneous networks (HetNets). We formulate the optimization problem as an exact potential game, where Nash equilibrium point is guaranteed to be achieved within finite number of plays. Through simulations, are able demonstrate fast convergence algorithm, increase average user rate, tremendous improvement on...

Although machine control data can be obtained by means of converting cutter location (CL) comprised the tool tip coordinate and axis orientation vector in workpiece frame with postprocessor, it’s uncertain whether they used for 5-axis machining. Owing to fact that most postprocessors focus on method derive solutions equations NC form-shaping function matrix inverse kinematics model without taking manufacturing scene into consideration, this study has presented a new post-processing system...

When utilizing all subcarrier activation patterns in the combinatorial index modulation (IM) scheme, existing techniques either fail to realize maximum possible throughput enhancement or address bit-level synchronization issue (or error propagation) due variable-length nature of index-domain codebook. To these drawbacks, we propose using Huffman coding for IM together with two constellation mappings bandpass modulation. The proposed scheme induces no signal overhead and is applicable when...

Consider the case where a source wishes to reliably deliver number of data packets destination with help demodulate-and-forward relay. We discuss two retransmission schemes, each which can ensure that from will be delivered without error. first scheme combines signals and relay at using weighed combiner. The use network coding facilitates process is then proposed. generation network-coded takes qualities previously erroneously received into account, we show such make more efficient even if...

We investigate a pricing based approach to control interference from tier-2 base station (BS) tier-1 BS in reversed time division duplex (TDD) multi-antenna systems. The is being charged for causing the BS. Also, has satisfy signal-to-interference-plus-noise ratio (SINR) targets of its downlink users under maximum transmission power constraint. Analytical and simulation studies are carried out understand behavior different charges budgets. Observations analyses suggest that can perform...

In this paper we investigate the multiple-access relay channels with feedback available at relay, and concentrate on designing retransmission protocol relay. The contains realized Signal-to-Noise Ratio (SNR) of each packet from different users. utilizes such information physical layer decides what to retransmit help network coding. objective is ensure has its SNR larger than some predetermined value so that certain Bit-Error Rate (BER) can be guaranteed. Simulation results show a cross-layer...

Maximum completion time is a key performance metric for future wireless applications that have stringent latency requirements. This letter studies its optimization in uplink multi-subcarrier non-orthogonal multiple access (NOMA) networks. The joint problem of power allocation, user pairing and scheduling analyzed proved to be NP-hard. To tackle the problem, allocation subproblem single NOMA pair first derived. Next, subproblem, an optimal algorithm special case constructed suboptimal general...