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.
In this work, it is studied the performance of a scheduling algorithm where the Mobile Terminals (MTs) may be turned off if they cause a level of interference greater than a given threshold. This approach, which is referred to as Interference Aware Muting (IAM), may be regarded as an interference-aware scheme that is aimed to reduce the level of interference. The performance of IAM is studied in terms...
Relay selection is a simple yet effective means to improve the reliability and coverage of wireless cooperative networks. However, it suffers from inefficient use of the available bandwidth resources. This paper introduces the use of content caching at relays in order to tackle this problem and improve the performance of relay selection. Three cache placement schemes are considered: one based on the...
HTTP Adaptive Streaming (HAS) is a widely used video streaming technology that suffers from a degradation of user's Quality of Experience (QoE) and network's Quality of Service (QoS) when many HAS players are sharing the same bottleneck link and competing for bandwidth. The two major factors of this degradation are: the large OFF period of HAS, which causes false bandwidth estimations, and the TCP...
AVS-P10 is the first national standard for mobile audio codec with completely independent intellectual property rights. In view of the current situation of the explosive growth of network audio data, According to the principle of AVS-P10 coding and based on AVS-P10 core encoder to make the algorithm compile. And the algorithm is optimized by the self search cycle optimization scheme. Finally, the...
Road Side Units (RSUs)-based data communication (V2I) is an increasingly popular technique in vehicular networks to alleviate the frequent vehicle-to-vehicle (V2V) communication problem. On-demand broadcasting is a scalable approach for supporting large clients with dynamic demands. However, the performance of the traditional on-demand broadcast can be improved significantly with the incorporation...
The delivery and display of 360-degree videos on Head-Mounted Displays (HMDs) presents many technical challenges. 360-degree videos are ultra high resolution spherical videos, which contain an omnidirectional view of the scene. However only a portion of this scene is displayed on the HMD. Moreover, HMD need to respond in 10 ms to head movements, which prevents the server to send only the displayed...
In this paper, we study a spectrum allocation mechanism of Cognitive Radio Networks based on multi-backpack problem, and then propose a discrete hybrid leapfrog algorithm and a spectrum allocation method based on this algorithm. This algorithm uses the integer coding method and designs the corresponding algorithm search strategy, using the crossover and mutation operator to improve the algorithm performance...
Telemedicine offers the ability to provide real-time medical support, education, and care to remote and austere locations under limited bandwidth restrictions. These types of communication channels can easily be overwhelmed and delays or interruptions make communication difficult, if not impossible. These interruptions destroy the temporal orientation of communication resulting in significant cognitive...
In view of the problem that the unfixed CRC calculation and the compatibility with gigabit Ethernet are the two questions during design of ten gigabit Ethernet MAC controller. This paper solves the above two questions according to the proposed solution. CRC calculation module can be designed to be a fast calculation speed and low gate delay by using a new type CRC method which contains the preprocessing...
Consider a distributed storage system where parts of the source file fragments in storage nodes are lost. We denote a storage node that lost a part of its fragments as a faulty storage node and a storage node that lost non of its fragment as a complete storage node. In a process, termed as partial repair, a set of storage nodes (among faulty and complete storage nodes) transmit repairing fragments...
This paper presents a bandwidth efficient coded modulation scheme based on orthogonal M-ary QAM (OMQAM) modulation. Orthogonal M-ary QAM is a coded multi-quadrature amplitude modulation that utilizes a block of bi-orthogonal code to map a block of data. In this scheme, information data blocks are coded using a block of orthogonal codes which are then modulated by using M-ary QAM. At the receiver the...
Digital video communication is becoming popular with the recent advances in the satellite and wireless networks, and the growing popularity of the World Wide Web. The mobile users generally have limited bandwidth, and hence it is crucial to develop efficient scalable video coding scheme for low bandwidth channels. The current video coding standards are primarily based on discrete cosine transform...
As a distributed storage system with regenerating function of failed nodes, regenerating codes have been studied recently. In a [n, k, d]-regenerating codes framework, a message can be reconstructed from any subsets of k nodes out of n nodes and any failed nodes can be repaired from any subsets of d nodes out of (n − 1) nodes. The conditions of the reconstruction and regeneration can be generalized...
We consider a hierarchical DSS where the content is stored with coding in storage nodes and without coding in a backup node. We analyze the system where mobile nodes request the content from the storage nodes. Backup node is assumed to be accessible by storage nodes only in the case where repairs are required. Under this scenario, we derive the upper bound on the file size bound as well as establish...
Orthogonal Frequency division multiplexing is the modulation technique used for the fourth generation wireless communication system. In OFDM, Signals can be modulated by multiple carriers. OFDM uses the bandwidth of the spectrum efficiently. But the limitation of the OFDM system is the high Peak to Average Power Ratio (PAPR) which results in the degradation of the signal quality. Hence reducing the...
A point-to-point interface with a clock embedded scheme (CES) in Fig. 29.5.1 is generally adopted in an intra-panel interface due to the poor signal integrity of the multi-drop topology, data and clock channel skews and EMI emission from the forwarded clock signal channels. Clock recovery in RX without a reference clock channel is usually carried out using one of two type of data encoding schemes,...
Mobile DRAMs are essential to support memory-intensive operations for smartphones and tablet PCs [1, 2]. Since mobile DRAM standard (LPDDR), for the next generation, targets the speed specification of 51.2GB/s, its I/O interface demands high bandwidth, low power and high efficiency. Single-ended signaling has been used for LPDDR interfaces due to 100% pin efficiency. However, as the data rate increases...
For more than two decades, the key objective for synthesis of linear decompressors has been maximizing encoding efficiency. For combinational decompressors, encoding satisfiability is dynamically checked for each specified care bit. By contrast, for sequential linear decompressors (e.g. PRPGs), encoding is performed for each test cube; the resultant static encoding considers that a test cube is encodable...
During the transition to packet-switched on-chip networks we lose the relative timing and ordering of requests, which are essential for shared memory coherency and the communication of spikes in hardware-based artificial neural networks. We present a bufferless network architecture that enforces a time-based sharing of multi-hop single-cycle paths, providing guaranteed services at low cost. We guarantee...
Virtual reality and 360-degree video streaming are growing rapidly; however, streaming 360-degree video is very challenging due to high bandwidth requirements. To address this problem, the video quality is adjusted according to the user viewport prediction. High quality video is only streamed for the user viewport, reducing the overall bandwidth consumption. Existing solutions use shallow buffers...
Podaj zakres dat dla filtrowania wyświetlonych wyników. Możesz podać datę początkową, końcową lub obie daty. Daty możesz wpisać ręcznie lub wybrać za pomocą kalendarza.