Revista Ingenierías Universidad de Medellín
Print version ISSN 1692-3324
RAMIREZ BEHAINE, Carlos Alberto. Modulación por multiportadoras tipo OFDM, las bases de la nueva generación de transmisión de información. Rev. ing. univ. Medellin [online]. 2006, vol.5, n.9, pp. 75-83. ISSN 1692-3324.
The projections of the demand of broadband services show a vertiginous growth in the next decades. The modulation scheme that supports the physical level of such services is the Orthogonal Frequency-Division Multiplexing (OFDM) that thanks to their orthogonal characteristics, overcome the transmission barriers imposed by the communication channels. After illustrating the fundamentals of why OFDM achieves its objective and detailing the mapping and model of communications in base band, the present and future of potential applications of OFDM are indicated. It is likely that a model for the new generations, in which time, frequency and code concur in space, will arise
Keywords : OFDM; sistemas de comunicaciones multiportadoras; modelaje de sistemas ortogonales; banda ancha; WiFi; WiMax.