Serwis Infona wykorzystuje pliki cookies (ciasteczka). Są to wartości tekstowe, zapamiętywane przez przeglądarkę na urządzeniu użytkownika. Nasz serwis ma dostęp do tych wartości oraz wykorzystuje je do zapamiętania danych dotyczących użytkownika, takich jak np. ustawienia (typu widok ekranu, wybór języka interfejsu), zapamiętanie zalogowania. Korzystanie z serwisu Infona oznacza zgodę na zapis informacji i ich wykorzystanie dla celów korzytania z serwisu. Więcej informacji można znaleźć w Polityce prywatności oraz Regulaminie serwisu. Zamknięcie tego okienka potwierdza zapoznanie się z informacją o plikach cookies, akceptację polityki prywatności i regulaminu oraz sposobu wykorzystywania plików cookies w serwisie. Możesz zmienić ustawienia obsługi cookies w swojej przeglądarce.
Device-to-device (D2D) communications can enhance the overall system capacity by reusing cellular spectrum, which at the same time leads to severe interference to cellular connections and vice versa. In practice, even when two wireless connections share the same spectrum, the interference between them may not always exist if there is no conflict at packet-level transmissions. Thus, in this paper,...
In wireless ad hoc networks, misbehavior of nodes in computation of backoff value is one of the problems that affects the performance at MAC layer. To overcome this problem, this paper proposes a solution in which Contention Window subrange is specified by the receiver to the sender through CTS/ ACK packet. The advantage of sending the Contention Window subrange is, it is easier to detect the misbehaving...
This paper proposes a CABAC decoder for HEVC that achieves constant high throughput multi-bin decoding with the parallel syntax element parser to solve the dependency problem in the traditional prediction based multi-bin architecture. The hardware implementation with TSMC 90nm CMOS technology can process 1 bins per cycles with 48,430 gate count (270Mbins/sec,) or 3 bins per cycle with 209,422 gate...
E-government plays an increasingly significant role in our day-to-day lives. Mobile government (m-Government) is a subset and extension of electronic government e-Government comprising of an alternative channel for governments to improve governments' fundamental functions and providing information and services. This paper introduces an interactive framework for m-Government that improves governmental...
In this demo, we provide a Mininet-based Software-Defined Network (SDN) simulation environment that improves the total flow throughput and scalability of the overall network. Mininet is a suitable and manageable tool to implement the proposed SDN based flow admission control module in order to configure the entire topology since it has already built in Open-Flow switches and virtual controllers. This...
Framed Slotted Aloha (FSA) is often employed for scheduling tag’s transmissions in Radio Frequency Identification (RFID) systems. Tags choose one of the offered slots for transmission and it can happen that some of the slots are empty, some have just one tag active - singleton slots and in some of the slots several tags are transmitting - collision slots. A standard compliant reader is capable of...
The article deals with the problem of controlling the flow of information coming from a group of unmanned aerial vehicles by radio channel. The stream is a sequence of binary information packages. The inevitable data losses compensated by repetition of lost packages. Modern methods control of data flow assumes using a mechanism automatic repetition query based on the method of sliding window. In this...
The growth of digital information and the richness of data shared online make it increasingly valuable to be able to process large amounts of data at a very high throughput rate. At the same time, rising interest in natural language processing (NLP) has resulted in the development of a great number of algorithms designed to perform a variety of NLP tasks. There is a need for frameworks that enable...
Under the Advanced Metering Infrastructure, millions of metering endpoints spread over the residential areas need a two way communication network to connect them with the head-end system (HES) through a data collector. The data collector has a high bandwidth gateway to the HES but the last mile network to connect the collector with the endpoints remains a challenge. Narrow band power line carrier...
When white space radio systems of the same type are operating in the same geographic location, coexistence problem can be solved by self-coexistence mechanisms embedded in such radio systems. However, when neighbor white space radio systems are of a different type, external coexistence system is required. This paper presents implementation of such coexistence system based on the IEEE 802.19.1 standard...
The forecasting accuracy of port throughput is influenced by many complicate socio-economic factors, especially by nonlinear and fluctuation signal included in the history sequence of port throughput. To deal with the nonlinear and fluctuation signal in the history sequence, this paper introduces the parameter projection pursuit regression (PPPR) method to the port throughput prediction field. In...
We describe and demonstrate a fully distributed algorithm that enables prioritized TCP flows to allocate network resources (bandwidth) among themselves. The algorithm does not require any explicit communication among the different TCP flows. It enables autonomous adaptation to loss of network resources due to cyber attack or failure, while ensuring that users receive prioritized utility from available...
WiMAX technology supports to different MAC and Physical Layer parameters. The performance of TCP Linux in WiMAX network is analyzed by varying MAC layer and Physical layer parameter such as channel bandwidth, cyclic prefix, modulation coding scheme, frame duration, DL: UL ratio, propagation model, full duplex mode of data transfer and other operating parameter such as downloading traffic. These parameters...
This paper proposes an analytical model for performance evaluation of Cellular-WLAN Heterogeneous Networks (HetNets) based on Continuous Time Markov Chain (CTMC) for variable-bit-rate (VBR) data services. This model considers system specific overheads and limitations such as limited number of supported modulation and coding scheme (MCS) of each network. Moreover, this model includes the traffic density...
Several techniques such as carrier aggregation (CA) and cognitive radio (CR) have been proposed to achieve high data rates to meet the demand of future wireless communication systems. Those techniques pose a strict adjacent channel interference (ACI) requirement. However, currently employed orthogonal frequency division multiplexing (OFDM) systems suffer from significant spectrum leakage and require...
Mobile ad-hoc network (MANET) is an autonomous system of mobile nodes connected by wireless links; each node operates as an end system and a router for all other nodes in the network. Nodes in mobile ad-hoc network are free to move and organize themselves in an arbitrary fashion. The path between each pair of the users may have multiple links and the radio between them can be heterogeneous. Use of...
This Image compression using Discrete Wavelet Transform has got application in many filed like biomedical, agriculture, digital video compression, wireless networks. In this paper we present a parallel-pipelined architecture for lifting based two dimensional DWT. We have used lifting based wavelet filter for image compression. Overall area has been reduced by eliminating line buffer and frame buffer...
Mobile Ad hoc Network (MAN ET) is a collection of wireless mobile hosts without the requirement of any existing infrastructure or centralized access point, such as base station, due to this it is a self-organized network. The black hole problem is one of the security attacks that occur in mobile ad hoc networks (MAN ETs). In Black hole attack, a malicious node falsely advertise shortest path to the...
The SSD is adopted to improve the IO performanceof the storage system in the data center, the throughput allocation for clients is a challenging problem. We need to find a throughput allocation method, which can determine the throughput allocations of clients on each server, while both providing the fair allocations for clients and maximizing the utilization of system throughput resource in the entire...
We consider a slow fading three-node network consisting of a source, a half-duplex decode-and-forward relay, and a destination, where a direct link between the source and the destination does not exist. We assume that the half-duplex relay is equipped with a buffer and employs in each time slot adaptive scheduling of reception and transmission based on the instantaneous qualities of the source-to-relay...
Podaj zakres dat dla filtrowania wyświetlonych wyników. Możesz podać datę początkową, końcową lub obie daty. Daty możesz wpisać ręcznie lub wybrać za pomocą kalendarza.