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A novel control scheme is presented in this work to address the attitude stabilization problem in the presence of actuator saturation, misalignment and lack of inertia information. Taking a hyperbolic tangent function in its formulation, the control signal explicitly obeys a known maximum-torque constraint. Considering the possible actuator misalignment, a dynamic attitude gain is introduced to accommodate...
Equipped with selective auditory attention (SAA), people are able to rapidly shift their attention to auditory events of interest. Although abstract neuroimaging paradigms are fundamental for exploring the neural basis of SAA, whether those findings are valid in a more naturalistic condition and how the types of auditory stimuli affect SAA are largely unknown. Here we propose a brain decoding study...
Several lightpaths can be switched as a single entity, so that only one pair of transmission ports will be consumed at every intermediate node, which facilitates port savings in Wavelength-Division Multiplexing (WDM) optical networks. However, in Elastic Optical Networks (EONs), the lightpath does not occupy a fixed wavelength but a group of continuous and orthogonal subcarriers with the flexible...
To realize high-speed big data transmission, we combine the advantages of Nyquist Super-channel and Software Defined Optical Networks (SDON), thus establishing the SDNyquist platform that dynamically manages the whole optical network. This platform has the features of flexible resource allocation, high spectrum efficiency and global network optimization with the help of Routing, Modulation Level and...
Resource allocation is an important topic with a wide range of applications. In many practical cases, users and resource suppliers are players in the market. As a result, much effort has been made in applying market mechanisms (such as auction and game-theoretic results) to resource allocation. The conventional approach in such studies is to consider cases where users' resource demands are fixed....
In the current distributed network, the grid computing technology has already been an important technology widely used in resource sharing and resource cooperation. Resource sharing usually participates in the grid activities by joining the Virtual Organization (VO) to achieve the cooperation tasks, so the VO is an important technology, which resources can participate into grid events, collaborative...
Orthogonal frequency division multiplexing access (OFDMA) is a promising candidate access scheme for future wireless communication systems. One of the most important research challenges in OFDMA system is the design of a packet scheduler to support multimedia services. In this paper, we propose a novel QoS-oriented dynamic threshold control (DTC) scheduling algorithm for mixed services (i.e., real-time...
This paper studies the Hamiltonian cycle protection method in survivable WDM mesh networks and propose a new heuristic algorithm called differentiated Hamiltonian cycle protection (DHCP). Compared to conventional algorithm, DHCP obtains significant improvement in resource utilization ratio and blocking probability.
This paper proposes a novel Differentiated Domain Protection (DDP) algorithm to address survivability in multi-domain optical networks. In order to ensure the principle of transparent management in multi-optical domains, DDP abstracts the multi-domain optical networks to Virtual Topology Graph (VTG) to solve the inter-domain routing. In order to satisfy the survivable requirements of different domains,...
In this paper, we propose a new algorithm, enhanced differentiated services protection (EDSP), to satisfy the multiple services grades under multi-link failures in WDM optical networks. We consider three services grades, i.e., diamond grade, golden grade and economy grade. For demand with economy grade, EDSP only computes a primary path and does not consider protection. For demand with Golden grade,...
This paper proposes a new survivable algorithm, enhanced shared-path protection (ESPP), to tolerate multi-link failures in WDM optical networks. In ESPP, we consider the load balancing to reduce the blocking probability, use resources sharing to save backup resources, and perform recovery escalation to carry the affected traffic. Compared with the conventional algorithm, ESPP has better resource utilization...
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