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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:scopusUMTS/HSPA and LTE cellular systems: On the frequency bands and the bit error rate
Conference ObjectAbstract: Two important aspects about UMTS/HSPA (Universal Mobile Telecommunications Service/High Speed PacketPalabras claves:Autores:Celso de Almeida, Henry Ramiro Carvajal Mora, Nathaly Orozco, NELSON BOLIVAR BENAVIDES CIFUENTES, RUBEN DARIO LEON VASQUEZ, Ruben LeónFuentes:googlescopusOn the Performance of Decode-and-Forward Equal-Gain-Combining Relay Systems over Weibull Fading Channels
ArticleAbstract: Relay-assisted wireless communications, where both the relay and the final destiny employ diversity-Palabras claves:average bit error probability, Decode-and-forward, equal-gain-combining, outage probability, Weibull fadingAutores:Almeida García F., Henry Ramiro Carvajal Mora, Nathaly Verónica Orozco Garzón, Paula Tilleria LuceroFuentes:scopusOn the cellular spectral efficiency of MC-CDMA systems with MMSE multiuser detector employing fractional and soft frequency reuse
ArticleAbstract: In this paper, an approach to evaluate the cellular spectral efficiency of the uplink of MC-CDMA sysPalabras claves:Fractional frequency reuse, MC-CDMA, Soft frequency reuse, Spectral efficiencyAutores:Celso de Almeida, Henry Ramiro Carvajal Mora, Nathaly OrozcoFuentes:scopusOn the performance of MC-CDMA cellular systems employing multiuser decorrelating detector and antenna array
Conference ObjectAbstract: The mean bit error rate (BER) for the uplink of a multicarrier-code-division multiple access (MC-CDMPalabras claves:Autores:Celso de Almeida, Henry Ramiro Carvajal Mora, Nathaly OrozcoFuentes:scopusOn the performance of maximal ratio combining and maximum likelihood detection in M-QAM/MC-CDMA systems
Conference ObjectAbstract: This paper compares the performance of Multi-carrier Code Division Multiple Access (MC-CDMA) systemPalabras claves:Autores:Celso de Almeida, Henry Ramiro Carvajal Mora, Nathaly OrozcoFuentes:scopus