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Four state binary QAM trellis code better than known codes
ArticleAbstract: The Letter presents a new one-memory quaternary four-state trellis code, and its four-state binary ePalabras claves:Codes and coding, information theoryAutores:Celso de Almeida, Jun R.P.Fuentes:scopusEfficient two-dimensional interleaving technique by use of the set partitioning concept
ArticleAbstract: The authors propose an efficient two-dimensional interleaving technique which spreads a cluster of ePalabras claves:Channel coding, Interleaved storageAutores:Celso de Almeida, Palazzo R.Fuentes:scopusA Low-Complexity Linear Precoding Algorithm Based on Jacobi Method for Massive MIMO Systems
Conference ObjectAbstract: In massive multiple-input multiple-output (MIMO) systems with the increase of the number of receivedPalabras claves:BER, channel capacity, Jacobi method, massive MIMO, Matrix inversion, Zero-ForcingAutores:Celso de Almeida, Minango J.Fuentes:scopusA turbo multiuser detector based on samples reliability
ArticleAbstract: A turbo multiuser detector based on the reliability of the samples is proposed. Reliability thresholPalabras claves:Complexity reduction, Samples reliability, Viterbi algorithmAutores:Celso de Almeida, Mataveli L.O.Fuentes:scopusComplexity Reduction of Convolutional and Turbo Decoding Based on Reliability Thresholds
ArticleAbstract: In this paper we propose a method that aims at reducing the complexity of convolutional and turbo dePalabras claves:Complexity reduction, convolutional codes, Turbo codesAutores:Celso de Almeida, Mataveli L.O.Fuentes:scopusLow complexity multiuser detection based on reliable samples
Conference ObjectAbstract: A sub-optimum multiuser detector which compares the received samples to reliability thresholds, in oPalabras claves:Autores:Celso de Almeida, Frison C.I.Fuentes:scopusLow complexity zero forcing detector based on Newton-schultz iterative algorithm for massive MIMO systems
ArticleAbstract: Linear detectors, such as zero forcing (ZF) and minimum mean-square error (MMSE), can achieve near-oPalabras claves:massive MIMO, Matrix inversion, Newton-Schultz iteration, Zero forcingAutores:Celso de Almeida, Minango J.Fuentes:scopusLow-complexity MMSE detector for massive MIMO systems based on damped Jacobi Method
Conference ObjectAbstract: Minimum mean square error (MMSE) linear detector is able to achieve the near-optimal bit error ratePalabras claves:Autores:Carlos Daniel Altamirano Carrillo, Celso de Almeida, Minango J.Fuentes:scopusSignal Space Diversity in Single and Multiuser Scenarios Employing Sphere Decoder Detector
ArticleAbstract: The matrix structure of the received signals of a system employing signal space diversity and antennPalabras claves:Bit error rate, Multiuser detection, Signal space diversity, Sphere DecoderAutores:Celso de Almeida, Henry Ramiro Carvajal Mora, Nathaly OrozcoFuentes:scopusMultiuser detector for synchronous DS-CDMA frequency-selective fading channels using linear matrix inequalities
Conference ObjectAbstract: In this article a multiuser receivers for DS-CDMA frequency-selective fading channels using linear mPalabras claves:DS-CDMA, Frequency-selective channel, LMI, MUD, Multiuser detection, RAKE, RDDAutores:Celso de Almeida, NELSON BOLIVAR BENAVIDES CIFUENTES, Víctor ProañoFuentes:googlescopus