A modified version of the Dijkstra algorithm using an inventive contraction hierarchy is proposed. The algorithm considers a directed acyclic graph with a conical or semi-circular structure for which a pair of edges is chosen iteratively from multi-sources. The algorithm obtains minimum paths by using a comparison process. The comparison process follows a mathematical construction routine that ...

Applying forward error correction (FEC) in offline streaming with large buffering time dramatically improves the quality and performance of communications under challenging network conditions. However real-time streaming puts hard restrictions on the buffer size and therefore does not allow FEC to compensate for long link failures on single path routes. However, multi-path routing, orthogonal t...

With the increasing diversity of wireless access technologies, and the further integration of mobile communication and heterogeneous wireless networks, more and more mobile devices equipped with multiple network interfaces. The mobile devices, which have integrated multi-homing technology, can transmit data through multiple network interfaces to improve the quality of data transmission for user...

A recently developed, rigid-panel deployable antenna has shown, unexpectedly, a kind of multi-path behaviour. A physical model of the antenna deploys automatically without problems but, during retraction, it attempts to follow an alternative path and gradually locks up. Manual intervention is necessary to take the model back to its nominal retraction path, and this successfully completes the re...

This paper discusses a design methodology of cooperative path planning for dynamical multi-agent systems with spatial and temporal constraints. The cooperative behavior of the multi-agent systems is specified in terms of the objective function in an optimization formulation. The path of achieving cooperative tasks is then generated by the optimization formulation constructed based on a differen...

A subspace-based blind adaptive linear minimum mean square error (MMSE) detector has been proposed for multi-user detection in a direct sequence code-division multiple-access (CDMA) system even when multi-path channels are unknown. In this paper, the applicability of the subspace-based blind adaptive algorithm in multiple access ultra-wideband (UWB) systems is investigated. The problem of blind...

This paper presents Threaded Multi-Path Execution (TME), which exploits existing hardware on a Simultaneous Multithreading (SMT) processor to speculatively execute multiple paths of execution. When there are fewer threads in an SMT processor than hardware contexts, threaded multi-path execution uses spare contexts to fetch and execute code along the less likely path of hard-to-predict branches....