Mostrando 10 resultados de: 11
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scopus(11)
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: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:scopusEffects of multiple co-channel interferers on the performance of amplify-and-forward relaying with optimum combining, multiple relays and multiple antennas
ArticleAbstract: Cooperative relaying is a method used mainly to improve cellular networks in terms of diversity gainPalabras claves:Amplify-and-forward, Antenna array, Interference, Moment-generating function, Optimum combiningAutores:Câmara C.E., Celso de Almeida, Merino H.W.Fuentes:scopusGeneral 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: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:scopusPerformance 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:scopusNumerical analysis of joint CDMA/PRMA protocol based on equilibrium point analysis
ArticleAbstract: Numerical expressions to assess the performance of a joint direct sequence code division multiple acPalabras claves:Autores:Celso de Almeida, Hoefel R.Fuentes:scopusOn the frequency allocation for mobile radio telephone systems
Conference ObjectAbstract: In this paper we propose a technique to realize the optimum allocation of frequencies for mobile radPalabras claves:Autores:Celso de Almeida, Palazzo R.Fuentes: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:scopusOptimum and quasi-optimum relaxation parameters for low-complexity massive MIMO detector based on Richardson method
ArticleAbstract: The low-complexity minimum mean square error detector based on Richardson method for massive MIMO syPalabras claves:Autores:Celso de Almeida, Minango J.Fuentes:scopus