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Browsing by Subject "Decoding"

Now showing items 1-14 of 14

An efficient GPU implementation of fixed-complexity sphere decoders for MIMO wireless systems

Roger Varea, Sandra; Ramiro Sánchez, Carla; González Salvador, Alberto; Almenar Terré, Vicenç; Vidal Maciá, Antonio Manuel (IOS Press, 2012)

The use of many-core processors such as general purpose Graphic Processing Units (GPUs) has recently become attractive for the efficient implementation of signal processing algorithms for communication systems. This is due ...
Aportaciones al modelado conexionista de lenguaje y su aplicación al reconocimiento de secuencias y traducción automática

Zamora Martínez, Francisco Julián (2012-12-07)

El procesamiento del lenguaje natural es un área de aplicación de la inteligencia artificial, en particular, del reconocimiento de formas que estudia, entre otras cosas, incorporar información sintáctica (modelo de lenguaje) ...
Contributions to the joint segmentation and classification of sequences (My two cents on decoding and handwriting recognition)

España Boquera, Salvador (2016-04-05)

[EN] This work is focused on problems (like automatic speech recognition (ASR) and handwritten text recognition (HTR)) that: 1) can be represented (at least approximately) in terms of one-dimensional sequences, and 2) ...
Escola de l'espectador a Godella

Martínez Iglesias, María Teresa (2014-09-25)

[EN] The present project was born from the viewer figure. Analysing its importance, its socio-historical setting role, preferences, motivations and reality, which decide their cultural habits. This initiative, wants to ...
High speed RS(255, 239) decoder based on LCC decoding

García Herrero, Francisco Miguel; Valls Coquillat, Javier; Meher, P. K. (Springer Verlag (Germany), 2011-12)

Algebraic Soft-Decision Decoding (ASD) of Reed-Solomon (RS) codes provides higher coding gain over the conventional hard-decision decoding (HDD), but involves high computational complexity. Among the existing ASD methods, ...
Implementación VLSI del algoritmo de proyecciones sucesivas para detección de sistemas MIMO

Marín-Roig Ramón, José (2016-04-05)

[EN] The insatiable demand for bandwidth of communication on the part of end-users, linked to the lowering the price of the terminals and in telecommunication services have led to a spectacular growth of the wireless ...
Layer-Aware Forward Error Correction for Mobile Broadcast of Layered Media

Hellge, Cornelius; Gómez Barquero, David; Schierl, Thomas; Wiegand, Thomas (Institute of Electrical and Electronics Engineers (IEEE), 2011-06)

The bitstream structure of layered media formats such as scalable video coding (SVC) or multiview video coding (MVC) opens up new opportunities for their distribution in Mobile TV services. Features like graceful degradation ...
Low-complexity low-density parity check decoding algorithm for high-speed very large scale integration implementation

Angarita Preciado, Fabián Enrique; Marín-Roig Ramón, José; Almenar Terré, Vicenç; Valls Coquillat, Javier (Institution of Engineering and Technology (IET), 2012-11-06)

This study proposes a new low-complexity decoding algorithm for low-density parity check codes, which is a variation of the offset min-sum algorithm and achieves a similar performance with lower hardware cost. A finite ...
Multiple-vote symbol flipping decoder for non-binary LDPC codes

García Herrero, Francisco Miguel; Li, Erbao; Declercq, David; Valls Coquillat, Javier (Institute of Electrical and Electronics Engineers (IEEE), 2014-11)

A multiple-vote symbol-flipping (MV-SF) decoding algorithm for nonbinary low-density parity-check (NB-LDPC) codes is proposed in this paper. Our algorithm improves the generalized bit-flipping algorithm (GBFDA) by considering ...
Non-binary LDPC decoder based on symbol flipping with multiple votes

García Herrero, Francisco Miguel; Declercq, D.; Valls Coquillat, Javier (Institute of Electrical and Electronics Engineers (IEEE), 2014-05)

In this letter, a new algorithm to decode non-binary LDPC (NB-LDPC) codes is proposed. This algorithm is inspired from very low complexity decoders that have been proposed recently, in which only syndrome computations at ...
Printed Multimode Antenna for MIMO Systems

Antonino Daviu, Eva; Cabedo Fabrés, Marta; Bernardo Clemente, Bernardo; Ferrando Bataller, Miguel (Taylor and Francis, 2011)

A compact printed multimode antenna for Multiple-Input Multiple-Output (MIMO) systems is presented. The antenna consists of a slotted metallic ring antenna excited by four L-shaped microstrip feeding lines, which are ...
Reduction of Complexity for Nonbinary LDPC Decoders With Compressed Messages

Lacruz Jucht, Jesús Omar; García Herrero, Francisco Miguel; Valls Coquillat, Javier (Institute of Electrical and Electronics Engineers (IEEE), 2015-11)

In this brief, a method for compressing the messages between check nodes and variable nodes is proposed. This method is named compressed nonbinary message passing (CNBMP). CNBMP reduces the number of messages exchanged ...
Reliability-based iterative decoding algorithm for LDPC codes with low variable-node degree

Català Pérez, Joan Marc; García Herrero, Francisco Miguel; Valls Coquillat, Javier; Liu, K.; Lin, S. (Institute of Electrical and Electronics Engineers (IEEE), 2014-12)

In this letter, a new reliability-based iterative majority-logic decoding (RBI-MLGD) algorithm that computes the extrinsic information of previous iterations of the variable node is proposed. This decoding algorithm is ...
Tridimensional block multiword LDPC decoding on GPUs

Martínez Zaldívar, Francisco José; Vidal Maciá, Antonio Manuel; González Salvador, Alberto; Almenar Terré, Vicenç (Springer Verlag (Germany), 2011-12)

[EN] In this paper, we describe a parallel algorithm for LDPC (Low Density Parity Check codes) decoding on a GPU (Graphics Processing Unit) using CUDA (Compute Unified Device Architecture). The strategy of the kernel grid ...