Mostrando 10 resultados de: 15
Filtros aplicados
Publisher
AEU - International Journal of Electronics and Communications(3)
IEEE Access(3)
2014 International Telecommunications Symposium, ITS 2014 - Proceedings(1)
2016 IEEE Colombian Conference on Communications and Computing, COLCOM 2016 - Conference Proceedings(1)
2020 IEEE ANDESCON, ANDESCON 2020(1)
Área temáticas
Física aplicada(14)
Ciencias de la computación(4)
Comunicaciones(3)
Comercio internacional(1)
BER 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:scopusA 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: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:scopusOn 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: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:scopus