Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 813 for “"Broadcast"”.
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Automatic Dependant Surveillance-Broadcast Training
… using the Automatic Dependent Surveillance - Broadcast System (ADS-B). The FAA has set a mandate which requires all aircraft to be ADS-B equipped by the year 2020 in order to continue operating in the National Airspace System. However, the FAA has not set forth any training requirements for …
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Digitized Radio broadcast seeker (DRBS)
… allows many users to tune in and listen to broadcast transmissions simultaneously. While significant advancements have been made in SDR hardware technology and making data easily accessible to users, developer productivity has been lacking. The market lacks a simple software development kit …
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Fast, Metadata-private Anonymous Broadcast
… presents Trellis: a mix-net based anonymous broadcast system with cryptographic security guarantees. Trellis can be used to anonymously publish documents or communicate with other users, all while assuming full network surveillance. In Trellis, users send messages through a set of servers in …
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Speech metadata in broadcast news
Thesis (M.Eng. and S.B.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2003.
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Network coding for anonymous broadcast
… explores the use of network coding for anonymous broadcast. Network coding, the technique of transmitting or storing mixtures of messages rather than individual messages, can provide anonymity with its mixing nature, efficiently disseminate content in multicast and broadcast networks, and …
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Radiolocation using AM broadcast signals
… I encountered several impediments to AM-broadcast-based radiolocation that, if not dealt with appropriately, reduce positioning accuracy, reduce ambiguity-resolution robustness, or both. AM transmitter position uncertainty directly causes receiver position-determination uncertainty. Since …
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Randomized algorithms for reliable broadcast
… is the problem of simulating the reliable broadcast functionality in a network where all communication is person-to-person. We design two randomized Byzantine agreement protocols in a synchronous network with an expected round-complexity of O(log n) rounds. One of the protocols is resilient …
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Atomic Broadcast in Heterogeneous Distributed Systems
… cooperation between the different reliable broadcast protocols that run on different LANs. Our objective is to support a reliable ordered delivery service for inter-LAN messages and achieve the utmost utilization of the underlying local communication services. Our protocol suite accommodates …
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Raptorq-Based Multihop File Broadcast Protocol
… thesis is to describe and implement a RaptorQ broadcast protocol application layer designed for use in a wireless multihop network. The RaptorQ broadcast protocol is a novel application layer broadcast protocol based on RaptorQ forward error correction. This protocol can deliver a file reliably …
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Fault-Tolerant Scheduling and Broadcast Problems
… to periodic requests in a real-time system and broadcasting messages on communication networks. The faults considered in these problems result from timing errors and communication line failures, respectively. For both problems fault-tolerant techniques are incorporated into the system and …
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Video coding in a broadcast environment
Thesis (M.S.)--Massachusetts Institute of Technology, Program in Media Arts & Sciences, 1993.
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Power aware broadcast trees for sensor networks
… plane, the problem of constructing a power aware broadcast tree from a given source node is a difficult problem when nodes have k different levels of power. In fact, it is known that the problem of constructing a broadcast tree that minimizes total power consumption is NP-hard; We investigate the …
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Packet voice/data in local broadcast networks
… The latter aspect is very important in local broadcast networks where the capacity is a scarce resource, for example mobile radio. This research has examined two types of local broadcast network, these being the Ethernet-type bus local area network and a mobile radio network with a central …
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Securing Wireless Broadcast Communications against Internal Attacks
… interference (jamming) attacks against broadcast communications. Such attacks have been shown to be detrimental to network operation. We further consider the problem of distributed node coordination in dynamic spectrum networks. To address these problems, we design novel communication …
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Exact Byzantine consensus under local-broadcast channels
… consensus with Byzantine faults under a local-broadcast communication channel. We prove necessary and sufficient conditions on the underlying communication graph to achieve consensus. We show that under this model consensus is possible on undirected graphs that have $2f+1$ nodes and are …
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The effects of mergers in broadcast television
In 1999 the Federal Communications Commission decided to relax its prohibition against one firm owning two television stations in the same market. Although joint ownership was prohibited prior to 1999, evidence on the effects of joint operation is provided by local marketing agreements, contractual …
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Efficient scheduling of multi-antenna broadcast systems
… scheduling users in a multi-antenna Gaussian broadcast channel with 1M transmit antennas and K independent receivers each with a single receive antenna. We first focus on a scenario with two transmit antennas and statistically identical users, and analyze the gap between the full sum capacity …
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Fault Tolerant Broadcast in Bandwidth-Constrained Networks
… the problem of achieving scalable fault-tolerant broadcast in networks with limited bandwidth. We begin by examining the limitations of leaderbased protocols, such as HotStuff, which suffer from a leader bottleneck and reduced system throughput as the number of servers increases. To mitigate this, …
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