Mostrando 10 resultados de: 29
Filtros aplicados
Publisher
IEEE Access(6)
AEU - International Journal of Electronics and Communications(3)
IEEE Vehicular Technology Conference(3)
2014 International Telecommunications Symposium, ITS 2014 - Proceedings(2)
2019 IEEE 4th Ecuador Technical Chapters Meeting, ETCM 2019(2)
Área temáticas
Física aplicada(24)
Ciencias de la computación(7)
Comunicaciones(2)
Comercio internacional(1)
BER 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 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 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 Interference Reduction Factor in Massive MIMO System over Rician Fading Channels
Conference ObjectAbstract: Massive Multiple-Input and Multiple-Output (M-MIMO) is considered a key technique in fifth-generatioPalabras claves:IRF, M-MIMO, uncorrelated Rician fading channelAutores:Carlos Daniel Altamirano Carrillo, Henry Ramiro Carvajal Mora, Jorge F. ArellanoFuentes:googlescopus