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scopus(22)
BER analysis of overloaded MC-CDMA cellular system employing sphere decoder in non-ideal sectorization scenario
Conference ObjectAbstract: New multiple access techniques aim to increase the spectral efficiency by overloading the system, i.Palabras claves:BER, Interference, MC-CDMA, Non-ideal-sectorization, Sphere-decoderAutores:Celso de Almeida, Henry Ramiro Carvajal Mora, Nathaly OrozcoFuentes:scopusBit 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 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:scopusAn Opportunistic System to Counteract Fading and Gaussian Interference Effects under Different Modulation Schemes
ArticleAbstract: In this paper we propose an opportunistic transmission in which the fading characteristics and interPalabras claves:Cellular system, co-channel interference, Opportunistic System, Rayleigh Fading ChannelAutores:Celso de Almeida, Henry Ramiro Carvajal Mora, Nathaly OrozcoFuentes:scopusEnabling 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 Asymptotic BER of MMSE Detector in Massive MIMO Systems
Conference ObjectAbstract: The minimum-mean-square-error (MMSE) detector is widely used in multiple-input multiple-output (MIMOPalabras claves:BER, massive MIMO, MMSE detectorAutores:Carlos Daniel Altamirano Carrillo, Celso de Almeida, Minango J., Nathaly OrozcoFuentes:scopusOn the Bit Error Rate of OFDMA Employing Short Cyclic Prefix and Maximal Ratio Combining
Conference ObjectAbstract: Orthogonal frequency division multiple access (OFDMA) has been chosen as the fourth generation (4G)Palabras claves:Bit error rate, maximal-ratio-combining, Ofdma, short cyclic prefixAutores:Celso de Almeida, García F.D.A., Henry Ramiro Carvajal Mora, Nathaly OrozcoFuentes:scopusOn the Bit Error Rate of Opportunistic Wireless Systems that Employ Non-Square Quadrature Amplitude Modulations
Conference ObjectAbstract: One of the phenomena that most affects the performance of wireless telecommunications systems is thePalabras claves:Bit error rate, Non-square modulations, opportunistic systemsAutores:Francisco Toapanta Hidalgo, Henry Ramiro Carvajal Mora, José Rodrigues Freire Filho, Nathaly OrozcoFuentes:scopusOn the bit error probability and the spectral efficiency of opportunistic wireless transmissions in Rician fading channels
ArticleAbstract: Opportunistic systems take advantage of the wireless communication channel random behavior, since trPalabras claves:Bit Error Probability, Modulations, Opportunistic System, Rician fading channel, Spectral efficiencyAutores:Carlos Daniel Altamirano Carrillo, García F.D.A., Henry Ramiro Carvajal Mora, Nathaly OrozcoFuentes:scopus