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Raptor codes

by Amin Shokrollahi - IEEE Transactions on Information Theory , 2006
"... LT-Codes are a new class of codes introduced in [1] for the purpose of scalable and fault-tolerant distribution of data over computer networks. In this paper we introduce Raptor Codes, an extension of LT-Codes with linear time encoding and decoding. We will exhibit a class of universal Raptor codes: ..."
Abstract - Cited by 577 (7 self) - Add to MetaCart
: for a given integer k, and any real ε> 0, Raptor codes in this class produce a potentially infinite stream of symbols such that any subset of symbols of size k(1 + ε) is sufficient to recover the original k symbols with high probability. Each output symbol is generated using O(log(1/ε)) operations

A temporal logic for input output symbolic transistion systems

by Marc Aiguier, Christophe Gaston, Pascale Le Gall, Delphine Longuet, Assia Touil , 2005
"... Abstract — In this paper, we present a temporal logic called F whose interpretation is over Input Output Symbolic Transition Systems (IOSTS). IOSTS extend transition systems to communications and data in order to tackle communications with system environment. F is then defined as an extension of tem ..."
Abstract - Cited by 6 (4 self) - Add to MetaCart
Abstract — In this paper, we present a temporal logic called F whose interpretation is over Input Output Symbolic Transition Systems (IOSTS). IOSTS extend transition systems to communications and data in order to tackle communications with system environment. F is then defined as an extension

Achieving near-capacity on a multiple-antenna channel

by Bertrand M. Hochwald, Stephan Ten Brink - IEEE Trans. Commun , 2003
"... Recent advancements in iterative processing of channel codes and the development of turbo codes have allowed the communications industry to achieve near-capacity on a single-antenna Gaussian or fading channel with low complexity. We show how these iterative techniques can also be used to achieve nea ..."
Abstract - Cited by 402 (2 self) - Add to MetaCart
of the sphere decoder, we provide a simple method to iteratively detect and decode any linear space-time mapping combined with any channel code that can be decoded using so-called “soft ” inputs and outputs. We exemplify our technique by directly transmitting symbols that are coded with a channel code; we show

Multiple-input multiple-output symbol rate signal digital predistorter for non-linear multi-carrier satellite channels

by Efrain Zenteno , Roberto Piazza , M R Bhavani Shankar , Daniel Rönnow , Björn Ottersten
"... Abstract: A digital predistortion (DPD) scheme is presented for non-linear distortion mitigation in multi-carrier satellite communication channels. The proposed DPD has a multiple-input multiple-output architecture similar to data DPD schemes. However, it enhances the mitigation performance of data ..."
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Abstract: A digital predistortion (DPD) scheme is presented for non-linear distortion mitigation in multi-carrier satellite communication channels. The proposed DPD has a multiple-input multiple-output architecture similar to data DPD schemes. However, it enhances the mitigation performance

Recognition of visual activities and interactions by stochastic parsing

by Yuri A. Ivanov, Aaron F. Bobick - IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE , 2000
"... This paper describes a probabilistic syntactic approach to the detection and recognition of temporally extended activities and interactions between multiple agents. The fundamental idea is to divide the recognition problem into two levels. The lower level detections are performed using standard inde ..."
Abstract - Cited by 322 (8 self) - Add to MetaCart
independent probabilistic event detectors to propose candidate detections of low-level features. The outputs of these detectors provide the input stream for a stochastic context-free grammar parsing mechanism. The grammar and parser provide longer range temporal constraints, disambiguate uncertain low

Symbols

by David A. Hare, Ping Tcheng , 1995
"... AOA angle of attack, deg bk transfer function denominator polynomial coefficients, k = 12, CA snubber circuit capacitance, F CF feedback network roll-off capacitance, F CL load capacitance, F D discriminant DAS data acquisition system DC denotes constant voltage DVM digital voltmeter Ei Laplace tran ..."
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transform of network input voltage Eo Laplace transform of network output voltage FS full scale K operational amplifier open-loop gain, V/V pk poles of transfer function TS, k = 12, ppm parts per million RA snubber network resistance, Ω RS operational amplifier open-loop source resistance, Ω R1, RF filter

Symbols

by Elhalwagy Y. Z, Tarbouchi M
"... Abstract:- This paper presents the application of hybrid direct adaptive fuzzy control techniques to a missile autopilot design. The proposed control structure is to augment existing conventional controller with a fuzzy model reference learning controller (FMRLC). The conventional control law is cho ..."
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is chosen to stabilize the missile system and to provide approximate control. A feature of this scheme is that the FMRLC credit output will be added simply to the existing control signal. Moreover, the missile systems with high nonlinearities and aerodynamic uncertainties can be controlled over a wide

COMPUTABILITY AND HUMAN SYMBOLIC OUTPUT

by Jason Megill, Timothy Melvin , 2013
"... Abstract. This paper concerns “human symbolic output, ” or strings of characters produced by humans in our various symbolic systems; e.g., sen-tences in a natural language, mathematical propositions, and so on. One can form a set that consists of all of the strings of characters that have been produ ..."
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Abstract. This paper concerns “human symbolic output, ” or strings of characters produced by humans in our various symbolic systems; e.g., sen-tences in a natural language, mathematical propositions, and so on. One can form a set that consists of all of the strings of characters that have been

Compressed suffix arrays and suffix trees with applications to text indexing and string matching

by Roberto Grossi, Jeffrey Scott Vitter , 2005
"... The proliferation of online text, such as found on the World Wide Web and in online databases, motivates the need for space-efficient text indexing methods that support fast string searching. We model this scenario as follows: Consider a text T consisting of n symbols drawn from a fixed alphabet Σ. ..."
Abstract - Cited by 239 (20 self) - Add to MetaCart
The proliferation of online text, such as found on the World Wide Web and in online databases, motivates the need for space-efficient text indexing methods that support fast string searching. We model this scenario as follows: Consider a text T consisting of n symbols drawn from a fixed alphabet Σ

Cartesian Genetic Programming

by Julian F. Miller , Peter Thomson , 2000
"... This paper presents a new form of Genetic Programming called Cartesian Genetic Programming in which a program is represented as an indexed graph. The graph is encoded in the form of a linear string of integers. The inputs or terminal set and node outputs are numbered sequentially. The node funct ..."
Abstract - Cited by 230 (59 self) - Add to MetaCart
This paper presents a new form of Genetic Programming called Cartesian Genetic Programming in which a program is represented as an indexed graph. The graph is encoded in the form of a linear string of integers. The inputs or terminal set and node outputs are numbered sequentially. The node
Results 1 - 10 of 2,458