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An important open problem in interconnection network routing has been to characterize the conditions under which routing algorithms are deadlock-free. Although this problem has been resolved for restricted classes of routing algorithms, no general solution has been found. In this paper, we solve this problem by proving a necessary and sufficient condition… (More)

Replicating sensors is desirable not only to tolerate sensor failures but also to increase the expected accuracy of the ensemble of replicated sensors beyond that obtainable with a single one. Such replication is used in a multisensor environment or in a distributed sensor network. We model a continuous valued sensor as an interval of real numbers… (More)

In recent years, the study of systems with multiple sensors has been an active area of research. In the paper, the authors focus on the computational, i.e., architectural, algorithmic, and synchronization issues related to competitive information integration in a distributed sensor network (DSN). The proposed architecture of the DSN consists of a set of… (More)

An important open problem in wormhole routing has been to find a necessary and sufficient condition for deadlock-free adaptive routing. Recently, Duato has solved this problem for a restricted class of adaptive routing algorithms. In this paper, a necessary and sufficient condition is proposed that can be used for any adaptive or nonadaptive routing… (More)

The computational issues related to information integration in multisensor systems and distributed sensor networks has become an active area of research. From a computational viewpoint, the efficient extraction of information from noisy and faulty signals emanating from many sensors requires the solution of problems related a) to the architecture and fault… (More)

Parallel algorithms for several common problems such as sorting and the FFT involve a person-alized exchange of data among all the processors. Past approaches to doing complete exchange have taken one of two broad approaches: direct exchange or the indirect message-combining approaches. While combining approaches reduce the number of message startups,… (More)

A deadlock-free fully adaptive minimal routing algorithm for meshes that is optimal in the number of virtual channels required and in the number of restrictions placed on the use of these virtual channels is presented. It is also proved that, ignoring symmetry, this routing algorithm is the only fully adaptive routing algorithm with uniform routers that… (More)

A deadlock-free fully adaptive routing algorithm for 2D meshes which is optimal in the number of virtual channels required and in the number of restrictions placed on the use of these virtual channels is presented. The routing algorithm imposes less than half as many routing restrictions as any previous fully adaptive routing algorithm. It is also proved… (More)