The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The continuing trend towards higher data rates in wireless communication systems will, in addition to a higher spectral efficiency and lowest signal processing latencies, lead to throughput requirements for the digital baseband signal processing beyond 100 Gbit/s, which is at least one order of magnitude higher than the tens of Gbit/s targeted in the 5G standardization. At the same time, advances...
The diversity of IoT applications implies the requirement of reliable yet efficient MAC solutions for supporting transmissions for various traffic patterns. In this paper, we propose GoMacH, an efficient MAC protocol that provides high reliability and throughput for handling various traffic loads in IoT. GoMacH seamlessly integrates several outstanding techniques. It adopts the phase-lock scheme to...
An important challenge of modern data centres running Hadoop workloads is to minimise energy consumption, a significant proportion of which is due to the network. Significant network savings are already possible using Energy Efficient Ethernet, supported by a large number of NICs and switches, but recent work has demonstrated that the packet coalescing settings must be carefully configured to avoid...
Electromagnetic Wireless Nano Sensor Networks (EM-WNSNs) with molecule-level sensing capacity benefit a wide range of applications that demand high resolution. To accommodate the potentially high data volume, small antenna size, and limited energy capacity, the high-speed TeraHertz (THz) pulses sparsely distributed over time are adopted for communications among nano devices. For EM-WNSNs connected...
The computer modeling system of industrial extruders with adjustable configuration has been developed allowing solving control tasks of multi-assortment polymeric film quality under change-over of production lines on new assignments and under product manufacture. The system includes module for extruder mark choice, module for extruder configuration design, module for calculation of geometrical parameters...
Wi-Fi enabled hand-held devices have quickly occupied the consumer market as a result of the remarkable customer acceptance of IEEE 802.11 standard. In this regard, the demand of high throughput introduces high throughput standards such as IEEE 802.11ac. It supports Dynamic Bandwidth Channel Access (DBCA), where a wireless station selects channel bandwidth dynamically based on the availability of...
TCP LoLa is a new delay-based congestion control that supports both, low queuing delay and high network utilization in high speed wide-area networks. This is particularly useful for traffic mixes consisting of bandwidth demanding and delay sensitive flows (e.g., long file transfer and interactive "web 2.0" traffic). TCP LoLa keeps the queuing delay at the bottleneck link low around a fixed...
The Keyed-Hash Message Authentication Codes(HMAC) is a useful mechanism for message authentication. In this paper, a high-performance HMAC/SHA-3 processor which can generate HMAC message digest and hash message digest is presented. Not only the standard length (224,256,384,512) of the message digest can be generated, but also a length of 64-bit message digest. Due to the application of new generation...
The performance of router directly impacts the Network-on-Chip (NoC) performance. This paper focus on developing efficient microarchitecture of allocator in the router and proposed matrix-diagonal allocator with high matching quality and low packets latency. The allocator, taking advantage of the fact that each element in the diagonal doesn't share the same row or column, includes matrix-diagonal...
The service-oriented paradigm offers support for engineering service-based systems based on service composition. QoS (Quality of Service)-aware service composition chooses a set of services to collectively construct a service-based system, while satisfying global QoS constraints and budget restriction. The service providers naturally are self-interested and strive to maximize their own utilities....
Interactive video streaming requires very low latency and high throughput. Traditional latency based congestion control algorithm performs poorly in fairness. This results in very poor video quality to adaptive video streaming. Software defined networks (SDN) enables us to solve the problem by designing a network controller in the routers. This paper presents a SDN-centric TCP where sending rate of...
In 5G, the small cell technology is proposed to cooperate with the cellular networks, and forms a Heterogeneous Network (HetNets) for achieving cooperative communications. The small cell-based cooperative communication brings several advantages: increasing system capacity in the indoor/outdoor hotspots, increasing wireless coverage, improving signal quality, reducing the eNB deployment cost, etc....
In this paper, we consider a time-slotted energy harvesting (EH) cognitive radio (CR) network, where the secondary user (SU) is powered by a continual source of energy harvested from ambient environment. Jointly considering the primary user activity on the primary channel, diversity of channel conditions, energy replenishment process as well as the imperfection of spectrum sensing, the SU aims to...
Zero latency convolution typically uses the Direct Form approach, requiring a large amount of computational resources for every additional sample in the impulse response. A number of methods have been developed to reduce the computational cost of very large signal convolution. However these all introduce latency into the system. In some scenarios this is not acceptable and must be removed. Modern...
When encrypting a single file in the CBC mode of 3DES, there is a feedback path which brings data dependency. Even much more resources are given, it does not help matters to increase the throughput of 3DES. In this paper, we propose a logic simplifying method to accelerate the throughput in the CBC mode. In the datapath, 15 levels of XORs from the critical path can be moved to the non-critical path...
General queueing modeling method, Stochastic Timed Automation, is employed to model the Semiconductor Wafer Fabrication System because of its flexibility and fidelity. The machine allocation is formulated as a stochastic integer programming problem with the objective to optimize the throughput of the Semiconductor Wafer Fabrication System. And we propose an Optimal Computing Budget Allocation-based...
In a Wireless Sensor Network (WSN), there are a large number of nodes whose power supply and computational capability are limited. The nodes in a wireless sensor network can be fixed or move randomly. Thus in these networks, to forward a data packet from one node to another needs to use specific strategies with very different characteristics. Accordingly the data forwarding strategy among nodes plays...
ZigBee is a widely used wireless technology in low-power and short-range scenarios such as Internet of Things (IoT), sensor networks, and industrial wireless networks. However, the standard ZigBee supports only one data rate, 250Kbps, which thoroughly limits ZigBee's efficiency in dynamic wireless channels. In this paper, we propose Mrs.Z, a novel physical layer design to enable multi-rate selection...
This paper studies routing performance loss due to traffic split ratio granularity constraints. For any given fineness of traffic splitting capability, we provide upper bounds on the loss of performance. Based on tight convex relaxation, we further develop an efficient approximation algorithm to compute a good routing solution that satisfies given constraints on traffic splitting. The results can...
To improve the performances of wireless sensor network (WSN) and its lifetime, the management of power consumption and the energy harvesting is crucial. In this paper, we propose an energy-harvested management mechanism (EH2M) for WSN, in order to minimize the duty-cycle on the basis of the present amount remaining energy. With EH2M, each sensor node can adjust its duty-cycle dynamically by computing...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.