Browsing by Author "Matas Navarro, David"
Now showing items 1-16 of 16
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A non-linear channel code for covert communications
(Institute of Electrical and Electronics Engineers (IEEE), 2019)
Conference lecture
Restricted access - publisher's policyThis paper presents an explicit channel code design for covert communications in the Binary Symmetric Channel. The proposed architecture is composed of the serial concatenation of a linear code and a graph-based non-linear ... -
Adaptive sampling for fast sparsity pattern recovery
(2011)
Conference report
Open AccessIn this paper we propose a low complexity adaptive algorithm for lossless compressive sampling and reconstruction of sparse signals. Consider a sparse non-negative real signal x containing only k << n non-zero values. ... -
Analysis of LDPC code syndrome entropy based on subgraphs
(Institute of Electrical and Electronics Engineers (IEEE), 2016)
Conference report
Open AccessWe propose a method to bound the syndrome entropy of linear block codes from their factor graph representation. It is specially suited for sparse graphs such as those of low density parity check codes. It is based on the ... -
ANTARES Project (Bridging Phase). Payload carrier synchronization : algorithms and simulations
(2011-11-23)
Research report
Restricted access - confidentiality agreementInforme final Bridging Phase. Versió 3.2 -
ANTARES Project (Phase B). Multiple acces scheme definition. Diverse trade-offs analysis for TDMA and CDMA
(2010-03-01)
Research report
Restricted access - confidentiality agreement -
ANTARES Project (Phase B). Multiple acces scheme definition. Spectral efficiency analysis of the MAC techniques considered for the Antares forward and return links
(2010-07-01)
Research report
Restricted access - confidentiality agreement -
ANTARES Project (Phase B). Multiple acces scheme definition. Successive interference cancellation for A-CDMA
(2010-05-01)
Research report
Restricted access - confidentiality agreement -
ANTARES Project (Phase B). Multiple access scheme definition. Impact of the aeronautical channel on the MAC techniques considered for the Antares forward and return links
(2010-03-01)
Research report
Restricted access - confidentiality agreement -
ANTARES Project (Phase B). Physical layer definition. Equalization detailed design
(2010-08-01)
Research report
Restricted access - confidentiality agreement -
ANTARES Project (Phase B). Physical layer definition. Payload carrier synchronization for the Antares TDMA return link
(2010-08-01)
Research report
Restricted access - confidentiality agreement -
Asymptotic MAP upper bounds for LDPC codes
(Institute of Electrical and Electronics Engineers (IEEE), 2016)
Conference report
Open AccessThis paper aims at computing tight upper bounds for the maximum a posteriori threshold of low-density parity check codes in the asymptotic blocklength regime for the transmission over binary-input memoryless symmetricoutput ... -
Non-linear graph-based codes for joint source-channel coding
(2010)
Conference report
Open AccessWe study the behavior of a new family of nonlinear graph-based codes, previously introduced for compression of asymmetric binary memoryless sources, for the joint source-channel coding scenario in which the codewords are ... -
Non-linear graph-based codes for source coding
(2009)
Conference report
Open AccessWe introduce a new family of graph-based source codes that can be regarded as a nonlinear generalization of LDPC codes, and apply them to the compression of asymmetric binary memoryless sources. Simulation results and the ... -
Optimum power allocation and bit loading for BICM systems
(2010-07-01)
Article
Open AccessThis paper introduces a joint bit loading and power allocation algorithm for systems combining bit-interleaved coded modulation (BICM) with multicarrier transmission. The proposed algorithm maximizes the mutual information, ... -
Optimum power allocation and bit loading with code rate constraints
(2009)
Conference report
Open AccessIn this paper, a new power allocation and bit loading policy is defined for those systems working with a preselected binary channel code and specific bit error rate (BER) requirements. It consists on the maximization of ... -
Proyecto AVANT. Estudio de técnicas de sincronización para relaciones señal a ruido muy bajas. D12. Disseny i simulació dels algorismes de sincronització
(2010-07-16)
Research report
Restricted access - confidentiality agreementIn this document, the synchronization algorithms developed during the project are presented and simulated. The studied algorithms are designed for a QS-CDMA system operating in the low SNR regime, i.e., at low Es/No values ...
