The Multiswitch project at Purdue University is investigating broadcast techniques for use in point-to-point networks. This paper analyzes four techniques for delivery of a broadcast message to all processors in a network. The current Multi-switch prototype network uses one of these techniques, called Flooding with Duplicate Discard (FDD). FDD is attractive because it provides high reliability ...

How to safely or reliably flood a packet via broadcast scheme to all nodes in computer networks is an important issue. However, it is a big challenge and critical problem to broadcast data packets over mobile ad hoc networks reliably due to the unsettled wireless links, high mobility, and the lack of the acknowledgment (ACK) scheme. Many solutions deal with this problem by adopting multiple uni...

The problem of multi-cell broadcast in cellular structured wireless networks is considered. It is shown that mobile subscribers that traverse cell boundaries while a multi-cell broadcast is in progress can experience a number of negative eeects. These eeects include severe jitter during multimedia transmissions and possible loss of critical data in mobile computing applications. As a solution, ...

In C-tests the hypothesis of items local independence is violated, which doesn't permit to consider them as real tests. It is suggested to determine the distances between separate C-test items (blanks) and to combine items into clusters. Weights, inversely proportional to the number of items in corresponding clusters, are assigned to items. As a result, the C-test structure becomes similar to t...

This paper studies the hierarchical broadcast networks, which are deened as broadcast networks whose every connected induced subgraph is also a broadcast network. We show that the minimum number of edges of a hierarchical broadcast network of order n is d n(n?2) 2 e for any n 4.

This paper investigates unsupervised language model adaptation on a new task of Mandarin broadcast conversation transcription. It was found that N-gram adaptation yields 1.1% absolute character error rate gain and continuous space language model adaptation done with PLSA and LDA brings 1.3% absolute gain. Moreover, using broadcast news language model alone trained on large data under-performs a...

A broadcast encryption system allows a center to communicate securely over a broadcast channel with selected sets of users. Each time the set of privileged users changes, the center enacts a protocol to establish a new broadcast key that only the privileged users can obtain, and subsequent transmissions by the center are encrypted using the new broadcast key. We study the inherent trade-off bet...