Privacy issues have become a considerable issue while the applications of big data are growing dramatically fast in cloud computing. The benefits us implementing these emerging technologies improved or changed service models and improve application performances various perspectives. However, remarkably volume sizes has also resulted many challenges practice. time execution encrypting is one serious during processes processing transmissions. Many current abandon encryptions order to reach an...

Integrating the Internet of Things (IoT) in smart grids has revolutionized energy sector, enabling real-time data collection and efficient distribution. However, this integration also introduces significant security challenges, particularly encryption. Traditional encryption algorithms used IoT are vulnerable to various attacks, advent quantum computing exacerbates these vulnerabilities. To address above paper proposes a novel mechanism, Quantum-Resistant Hybrid Encryption for (QRHE-IoT),...

Given a large graph with millions of vertices and different types, how can we spot anomalies find potential adversaries in time? Most graph-based fraud detection algorithms focus on finding dense blocks, discovering local subgraphs, designing belief propagation, latent factor models. However, as fraudsters online social networks gradually become adversarial, distributed, invisible, it is easy for them to evade traditional methods. Even worse, existing systems are fragile the new attacks....

Orbital angular momentum (OAM) at radio frequency (RF) provides a novel approach of multiplexing set orthogonal modes on the same channel to achieve high spectral efficiencies (SEs). However, existing research OAM wireless communications is mainly focused point-to-point transmission in line-of-sight (LoS) scenario. In this paper, we propose an overall scheme downlink multi-user (MU-OAM) backhaul based uniform circular arrays (UCAs) for broadcasting networks, which can joint spatial division...

Recent growth of cloud computing has driven the development Heterogeneous Cloud Federation (HCF) that been considered an approach improving diversity systems by enable users to select resources provided different service providers. Using this mechanism can divide a complicate task into group sub-tasks in order increase efficiency application executions, which support simultaneously executing systems. One resource allocation mechanisms is schedule tasks among However, current challenge...

Being a promising candidate technology for the fifth-generation cellular systems, ultra-dense network (UDN) is capable of improving system throughput by deploying more small cells (SCs) in existing macro-cells (MCs). In most cases, base stations (BSs) from both MCs tier and SCs are modeled as two independent homogeneous Poisson point processes (PPPs) or other derived PPP. previous works, area spectral efficiency (ASE) energy (EE) evaluated typical user's perspective, this method works well...

The rapid growth of mobile data traffic in a high-speed scenario imposes great challenges on wireless system design and optimization, where the inherent Doppler shift, frequent cell switching, large penetration loss will significantly degrade quality transceiver signals. Wireless resource scheduling dynamically allocates resources according to user channel conditions service requirement, which is an enabling approach maximize utilization. In this paper, we develop new method high mobility...

Data-centers play a fundamental role in cloud computing. As the market of computing continues to scale, it becomes increasingly difficult utilize resources large data-center networks. There is growing interest seek for efficient architectures among academia and industry. Software-defined Networking (SDN) promising technology develop scalable network massive data processing. SDN decouples control planes from physical switches centralizes management. However, most previous works merging with...

Due to the various applications for smartphones, mobile data traffic is growing at an unprecedented rate. The cellular network suffering from overloaded currently. Offloading part of through opportunistic contact between devices a promising solution solve overload problem. However, due uneven distribution and regular mobility smartphone users, contacts are opportunistic, offloading approach results in poor performance, i.e., relay user with other users small probability. In this paper, we...

By applying the “safety atmosphere” measurement theory to Chinese management companies engaged in road transportation, a corporate and individual safety risk assessment system was established that is consistent with cultural climate China, thereby reducing driving of truck drivers. The realizes enterprises, fleets individuals form test scales by constructing structural model enterprise atmosphere, including management, communication, supervision fleets, individuals. modeled using two-level...

In this paper, the issue of carrier frequency offset (CFO) estimation in interleaved orthogonal division multiple access (OFDMA) uplink systems is investigated. The problem peaks ambiguity MUSIC estimator proposed by Cao and Yao analyzed firstly, then a searching solution presented. Furthermore, new iterative algorithm based on proposed. approach iteratively searches for correct CFO vector minimizing objective function using first-order Taylor series approximation vector. It can conquer...

Content caching is an effective technique to alleviate the burden on backhaul links and reduce traffic in cellular networks. In converged networks, broadcasting networks can push non-real-time popular services different types of terminals during off-peak hours, while are deployed meet personalized needs. However, storage capacity usually limited. this context, we study cache router nodes close terminators. scheme, most transmitted by base station cached a distributed network. Then, users...

Enhancing the protein content and production efficiency of Saccharomyces cerevisiae is crucial as an alternative source. This study screened nongenetically modified yeast strains with high for food ingredient explored underlying mechanisms. Yeast levels were found to correlate RNA, leading a high-throughput screening method using RNA fluorescence flow cytometry. Four mutant libraries (∼200,000 cells) generated through adaptive laboratory evolution in synthesis inhibitors, resulting B1, 65.8...

This paper presents a cache-based popular services pushing solution on high-speed train (HST) by using converged wireless broadcasting and cellular networks. Pushing caching the HST to improve capacity of network is very efficient way; it can also bring better user experience. The most are transmitted cached vehicle relay station ahead departure time in proposed model. Then, broadcasted User Equipment after all passengers train; less delivered P2P mode through relayed train. Specifically, we...

In orthogonal frequency division multiple access (OFDMA) uplink system, estimations of time delay and carrier offset (CFO) are both particularly challenging. IEEE 802.16-based networks, such synchronization problem can be resolved in initial ranging process. this paper, exploiting the unique scheme interleaved OFDMA, a special symbol which has repetitive time-domain is designed. Furthermore, novel method for OFDMA system proposed by utilizing characteristic. Compared with existing methods,...

This paper proposes a capacity improving and energy saving scheduling scheme in push-based Converged Wireless Broadcasting Cellular Network (CWBCN). We maximize the network alleviate request congestion through broadcasting/multi-casting most popular services, locally caching for further on user side. In proposed scheme, we firstly introduce UE (User Equipment)-based mechanism by considering both frequency recency of services. Simulations show that brings significant improvement CWBCN. Based...

With the proliferation of portable devices, exponential growth global mobile traffic brings great challenges to traditional communication networks and wireless technologies. In this context, converged cache-based data offloading have drawn more attention based on strong correlation services. This paper proposes a novel popular services pushing caching scheme by using overlay networks. The most are pushed terrestrial broadcasting And they cached in n router-nodes with limited cache sizes....

In this paper, generalized spatial scattering modulation (GSSM) scheme is proposed for uplink millimeter wave (mmWave) multiple-input-multiple-output (MIMO) system. GSSM, not only the symbol domain information but also angle exploited in transmission signal to improve spectral efficiency. Based on characteristic of GSSM transmit signal, we propose maximum weight priority likelihood (MWP-ML) detector which based idea step-by-step detection. Firstly, principle MWP used determine information....

With the explosion of data traffic, use caching technology to offload traffic is a very effective way alleviate network pressure, especially in high-speed train (HST) scenarios. And when users participate game, costs offloading are greatly reduced. However, current research on users' participation not much; and there user security reliability issues cache device-to-device (D2D) network. Therefore, this paper, we propose novel scheme that terminals (UTs) cooperatively wireless services...

Small unmanned air vehicles (UAVs) have many advantages, including low cost and flexible deployment. And they play an important role to collect the sensing data of Internet Things (IoT). However, limited by load capability, it is a big challenge for them perform long-term, large range, or far distance tasks. In order tackle these challenges, we propose use assembly UAVs, in which can jointly optimize resource management, especially, energy resource. The system model, cyclic cooperation, one...

This paper presents the experimental services and trial test of China Mobile Multimedia Broadcasting (CMMB) system. Combined with comparison another popular mobile TV standard DVB-H, system infrastructure key techniques CMMB are introduced. We describe coverage deployment based on existing reports. Some aspects its in depicted. It is mentioned that due to fast commercial operation deployment, has become approachable handheld China. will try expand network set up mature pattern near future...

Channel estimation for millimeter wave (mmWave) systems over time-varying channels is a challenging problem, since large number of channel coefficients need to be estimated. In this paper, by exploiting the sparsity mmWave in angular domain, we propose an efficient sparse scheme based on compressive sensing (CS) theory. Specifically, considering that angles arrival/departure (AoAs/AoDs) vary more slowly than path gains, formulate into block-sparse signal recovery and then novel greedy...