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A Scheduling Scheme for Improving the Performance and Security of MU-MIMO Systems
ArticleAbstract: For the receiver of multiple-input multiple-output (MIMO) systems, linear detectors are an interestiPalabras claves:imperfect channel estimation, MU-MIMO, Rician fading, scheduling, Zero-ForcingAutores:Almeida F., Edgar Rosero, Henry Ramiro Carvajal Mora, Nathaly Orozco, Paola Salazar, Stalin CacuangoFuentes: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:scopusBER Evaluation of Linear Detectors in Massive MIMO Systems under Imperfect Channel Estimation Effects
ArticleAbstract: New perspectives for wireless communications have brought new techniques, such as a very large numbePalabras claves:BER, imperfect channel estimation, massive MIMO, Maximal-Ratio Combining, minimum-mean-square error, Zero-ForcingAutores:Carlos Daniel Altamirano Carrillo, Celso de Almeida, Henry Ramiro Carvajal Mora, Minango J.Fuentes: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:googlescopusAlternative representations for the probability of detection of non-fluctuating targets
ArticleAbstract: The authors derive a closed-form exact expression and a fast convergent series for the probability oPalabras claves:Autores:García F.D.A., Henry Ramiro Carvajal Mora, Nathaly Orozco, Santos Filho J.C.S.Fuentes: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:rraaeGLRT Detection of Nonfluctuating Targets in Background Noise Using Phased Arrays
Conference ObjectAbstract: This work assesses the performance of a phased array radar working in background noise. To do so, wePalabras claves:complex white Gaussian noise (CWGN), Generalized likelihood ratio test (GLRT), likelihood ratio test (LRT), Neyman-Pearson (NP) criterion, nonfluctuating targets, phased array radar, Probability of detection (PD)Autores:García F.D.A., Henry Ramiro Carvajal Mora, Nathaly OrozcoFuentes:scopusImproved Exact Evaluation of Equal-Gain Diversity Receivers in Rayleigh Fading Channels
ArticleAbstract: In this paper, we evaluate the performance of equal-gain-combining (EGC) receivers operating in RaylPalabras claves:average symbol error rate, equal-gain-combining, outage-probability, Rayleigh-fadingAutores:García F.D.A., Henry Ramiro Carvajal Mora, Nathaly OrozcoFuentes:scopusMC-CDMA and SCMA Performance Evaluation in 100% and 200% Load Factor Scenarios
Conference ObjectAbstract: In fifth-generation (5G) wireless networks, the perspective of very large number of simultaneous conPalabras claves:Autores:Celso de Almeida, Frison C.I., Henry Ramiro Carvajal MoraFuentes:googlescopusMC-CDMA and SCMA Performance and Complexity Comparison in Overloaded Scenarios
Conference ObjectAbstract: In 5G wireless networks, the perspective of very large number of simultaneous connections is challenPalabras claves:5G, MC-CDMA, Message Passing Algorithm, Overload Scenarios, SCMA, Sphere DecoderAutores:Celso de Almeida, Frison C.I., Henry Ramiro Carvajal MoraFuentes:scopus