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A hybrid transmission scheme employing opportunistic transmission and multiuser diversity
Conference ObjectAbstract: In this paper, we present a novel transmission scheme, which consists of a hybrid transmission methoPalabras claves:BER, Hybrid transmission, Multiuser diversity, opportunistic transmission, Spectral efficiencyAutores:Celso de Almeida, Henry Ramiro Carvajal Mora, Nathaly OrozcoFuentes:scopusBER of Massive MIMO in time-variant channels using multiplexed, superimposed and hybrid channel estimation techniques
ArticleAbstract: Massive MIMO (M-MIMO) is one of the most promising technologies towards fifth generation (5G) wirelePalabras claves:BER, Channel estimation, massive MIMO, Time-variant channels, Zero-forcing detectorAutores:Carlos Daniel Altamirano Carrillo, Celso de Almeida, Henry Ramiro Carvajal MoraFuentes:googlescopusBit error rate evaluation of SCMA in rician fading channels considering presence of co-cell interference
Conference ObjectAbstract: Non-orthogonal multiple access (NOMA) techniques have been proposed for fifth generation (5G) mobilePalabras claves:BER, Cellular system, Rician fading, SCMAAutores:Dennis Lara Hernandez, Efren Ona Proano, Frison C.I., Henry Ramiro Carvajal Mora, Nathaly OrozcoFuentes:scopusEstudio de la eficiencia espectral para sistemas de comunicaciones móviles de tercera generación UMTS
Bachelor ThesisAbstract: El presente proyecto de grado titulado ESTUDIO DE LA EFICIENCIA ESPECTRAL PARA SISTEMAS DE COMUNICAPalabras claves:EFICIENCIA ESPECTRAL, ELECTRÓNICA, REDES, SISTEMAS DE COMUNICACION, TELECOMUNICACIONESAutores:Gonzalo Olmedo, Henry Ramiro Carvajal MoraFuentes:rraaeEnabling Signal Space Diversity for MU-MIMO/OFDMA Cellular Systems That Employ Frequency Diversity
ArticleAbstract: Signal space diversity (SSD) is a technique to obtain diversity without loss in spectral efficiency.Palabras claves:Diversity methods, MIMO, Mobile Communication, multiple access interference, OFDMAutores:Celso de Almeida, Henry Ramiro Carvajal Mora, Nathaly Orozco, Paulo Chiliguano T.Fuentes:scopusMean Bit Error Rate Evaluation of MC-CDMA Cellular Systems Employing Multiuser-Maximum-Likelihood Detector
ArticleAbstract: In this paper, we evaluate the uplink bit error rate (BER) of multicarrier-code-division-multiple-acPalabras claves:Cellular radio, maximum likelihood decoding, multiaccess communicationAutores:Celso de Almeida, Henry Ramiro Carvajal Mora, Nathaly OrozcoFuentes:scopusMean Spectral Efficiency Evaluation of the Uplink of MC-CDMA Cellular Systems
ArticleAbstract: The mean spectral efficiency of the uplink of MC-CDMA cellular systems is evaluated. The complete syPalabras claves:Cellular system, Interference, MC-CDMA, Spectral efficiencyAutores:Celso de Almeida, Henry Ramiro Carvajal Mora, Nathaly OrozcoFuentes:scopusPerformance Analysis of Non-Ideal Sectorized SFR Cellular Systems in Rician Fading Channels with Unbalanced Diversity
ArticleAbstract: Nowadays, low reuse factors are used in cellular systems because of high traffic demand, despite itPalabras claves:Bit error rate, DIVERSITY, Interference, non-ideal sectorization, soft-frequency-reuseAutores:Carlos Daniel Altamirano Carrillo, Celso de Almeida, Henry Ramiro Carvajal Mora, Nathaly OrozcoFuentes:scopusPerformance Evaluation of Encoded Opportunistic Transmission Schemes
ArticleAbstract: The performance of encoded opportunistic transmission schemes in wireless channels affected by RaylePalabras claves:Bit error rate, error correction codes, opportunistic transmission, Rayleigh channels, Wireless CommunicationAutores:Celso de Almeida, Henry Ramiro Carvajal Mora, Nathaly OrozcoFuentes:scopusPerformance analysis of MC-CDMA cellular systems employing MMSE multiuser detector in presence of own-cell and co-cell interference
ArticleAbstract: In this work, it is analyzed the uplink performance of MC-CDMA cellular systems in order to show thaPalabras claves:Cellular systems, Interference analysis, MC-CDMA, minimum-mean-square errorAutores:Celso de Almeida, Henry Ramiro Carvajal Mora, Nathaly OrozcoFuentes:scopus