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.
This paper proposed an optimized packet scheduling algorithm for live peer-to-peer streaming system, where network coding technique is extended to improve the efficiency in bandwidth utilization. We identify a problem of undesirable non-innovative packet transmission due to the latency of buffer-map update among peers, which, with many previous proposed techniques, yields to bandwidth inefficiencies...
The energy used to transmit a single bit of data between the devices in sensor networks is equal to the energy for performing hundreds of instructions in those devices. Thus the reduction of the data necessary to transmit, while keeping the same functionality of the employed algorithms is a formidable and challenging scientific task. We describe an algorithm called Small Set of Allowed Coefficients...
This paper considers the multiple-access relay channel in a setting where two source nodes transmit packets to a destination node, both directly and via a relay node, over packet erasure channels. Intra-session network coding is used at the source nodes and inter-session network coding is employed at the relay node to combine the recovered source packets of both source nodes. In this work, we investigate...
Access reservation based on slotted ALOHA is commonly used in wireless cellular access. In this paper we investigate its enhancement based on the use of physical-layer network coding and signature coding, whose main feature is enabling simultaneous resolution of up to K users contending for access, where K ≥ 1. We optimise the slot access probability such that the expected throughput is maximised...
Vehicular communications have gained momentum as a means to coordinate vehicular traffic by disseminating information about the road status and traffic conditions. However, over the time, vehicular applications have changed towards being driven by exchanging and accessing multimedia information. Such applications have therefore evolved and become very greedy in terms of transmitted traffic and used...
In this paper, we propose a full-duplex physical-layer network coding (FD-PLNC) scheme for reciprocal asymmetric frequency-selective multipath channels using orthogonal frequency-division multiplexing (OFDM) and denoise and forward (DNF) relaying. We consider a network scenario of two-way relay channels (FD-TWRCS) with two source nodes, A and B, intending to exchange information with the aid of a...
Network Coding has significantly shown the achievable throughput and robustness in wireless Networks. However, network coding-enabled networks are susceptible to pollution attacks where a small number of polluted messages will propagate due to recoding and corrupt bunches of legitimate messages. Several lightweight Homomorphic Message Authentication Code (HMAC) schemes have been proposed for protecting...
Network coding, by right of the concise form and remarkable effect, has been applauded around the world since its emergence especially in the field of wireless communication. However, we find the superiority of network coding may be concealed by the over redundant information in coded packets under certain circumstances. That is, the back-and-forth coding at intermediate nodes makes the old information...
In this paper, we study Two-Way Relaying (TWR) networks well-known for its throughput merits. In particular, we study the fundamental throughput delay trade-off in TWR networks using opportunistic network coding (ONC). We characterize the optimal ONC policy that maximizes the aggregate network throughput subject to an average packet delay constraint. Towards this objective, first, we consider a pair...
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.