Results 91 to 100 of about 2,627 (180)

A Purely Symbol-Based Precoded and LDPC-Coded Iterative-Detection Assisted Sphere-Packing Modulated Space-Time Coding Scheme [PDF]

, 2006
In this contribution, we propose a purely symbol-based LDPC-coded scheme based on a Space-Time Block Coding (STBC) signal construction method that combines orthogonal design with sphere packing, referred to here as (STBCSP).
F. Guo, Alamri, O., Ng, S. X., O. Alamri, S.X. Ng, L. Hanzo, Hanzo, L., Guo, F.   +7 more
core   +1 more source

Optimized Irregular Low-Density Parity-Check Codes for Multicarrier Modulations over Frequency-Selective Channels

EURASIP Journal on Advances in Signal Processing, 2004
This paper deals with optimized channel coding for OFDM transmissions (COFDM) over frequency-selective channels using irregular low-density parity-check (LDPC) codes.
Gelle Guillaume, Mannoni Valérian, Declercq David   +2 more
doaj   +1 more source

Array Convolutional Low-Density Parity-Check Codes

, 2014
This paper presents a design technique for obtaining regular time-invariant low-density parity-check convolutional (RTI-LDPCC) codes with low complexity and good performance.
BALDI, Marco, CHIARALUCE, FRANCO, CANCELLIERI, Giovanni   +2 more
core   +1 more source

Low-Density Parity-Check Code Constructions

, 2014
Low-density parity-check (LDPC) codes are a class of linear block code capable of performing extremely close to the capacity of a channel as defined by Shannon. The purpose of this chapter is to provide an overview of the basic ideas, as well as the main
PAOLINI, ENRICO, M. Flanagan, Mark Flanagan, Enrico Paolini   +3 more
core   +1 more source

Hardwarearchitektur für einen universellen LDPC Decoder [PDF]

Advances in Radio Science, 2009
Im vorliegenden Beitrag wird eine universelle Decoderarchitektur für einen Low-Density Parity-Check (LDPC) Code Decoder vorgestellt. Anders als bei den in der Literatur häufig beschriebenen Architekturen für strukturierte Codes ist die hier vorgestellte ...
C. Beuschel, H.-J. Pfleiderer
doaj  

Investigation of punctured LDPC codes and time-diversity on free-space optical links

, 2011
In this paper, we analyze the behavior of DVB-S2 un-punctured/punctured low-density parity-check (LDPC) coded on-off-keying (OOK) under atmospheric turbulence conditions by utilizing time diversity. A performance characterization between these schemes is
Ghassemlooy, Zabih, Javornik, Tomaz, Kandus, Gorazd, Leitgeb, Erich, Czaputa, Martin   +4 more
core  

Rateless Protograph LDPC Codes for Quantum Key Distribution

IEEE Transactions on Quantum Engineering
Information reconciliation (IR) is a key step in quantum key distribution (QKD). In recent years, blind reconciliation based on low-density parity-check (LDPC) codes has replaced Cascade as a standard de facto since it guarantees efficient IR without a ...
Alberto Tarable, Rudi Paolo Paganelli, Marco Ferrari   +2 more
doaj   +1 more source

A Turbo-Detection Aided Serially Concatenated MPEG-4/TCM Videophone Transceiver

, 2004
A Turbo-detection aided serially concatenated inner Trellis Coded Modulation (TCM) scheme is combined with four different outer codes, namely with a Reversible Variable Length Code (RVLC), a Non-Systematic Convolutional (NSC) code a Recursive Systematic ...
Ng, S. X., Chung, J. Y., Hanzo, L., Guo, F.   +3 more
core  

Design of LDPC code for uncorrelated Rayleigh fading channel using modified outage probability

ICT Express
In this paper, we propose a new design metric called modified outage probability (MOP) for protograph-based low-density parity-check (LDPC) codes over the uncorrelated Rayleigh fading channel.
Woong-Shin Kwak, Jae-Won Kim
doaj   +1 more source

SIMULASI LOW DENSITY PARITY CHECK CODE BERBASIS FIELD PROGRAMMABLE GATE ARRAY [PDF]

, 2009
ABSTRAKSI: Seiring dengan perkembangan jaman, sistem komunikasi wireless dituntut untuk dapat menyediakan layanan data yang berkecepatan tinggi (high data rate) dengan QoS yang dapat dipercaya atau reliable (BER yang kecil dan dengan Eb/No seminimum ...
REZA DYNASTI PRAMANA
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