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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:googlescopusGeneral performance of detect-and-forward cooperative relaying in the presence of multiple interferers for optimum combining receivers
ArticleAbstract: Detect-and-Forward (DF) is a cooperative technique based on the retransmission of a detected versionPalabras claves:Antenna arrays, Detect-and-forward, Interference, Moment-generating function, Optimum combiningAutores:Câmara C.E., Celso de Almeida, Merino H.W.Fuentes: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:scopusOptimum rotation parameters for single and multiuser signal space diversity employing spatial diversity
ArticleAbstract: Signal space diversity (SSD) is an efficient scheme to obtain diversity without expanding bandwidth.Palabras claves:Antenna array, Maximum likelihood detection, Signal space diversity, Sphere decodingAutores:Celso de Almeida, Frison C.I., Henry Ramiro Carvajal MoraFuentes:googlescopusPerformance analysis of MC-CDMA cellular systems employing MMSE multiuser detector in presence of own-cell and co-cell interference
ArticleAbstract: In this work, it is analyzed the uplink performance of MC-CDMA cellular systems in order to show thaPalabras claves:Cellular systems, Interference analysis, MC-CDMA, minimum-mean-square errorAutores:Celso de Almeida, Henry Ramiro Carvajal Mora, Nathaly OrozcoFuentes:scopus