Vidal Catalá, José Ramón; Pla, Vicent; Guijarro Coloma, Luis Alejandro; Martínez Bauset, Jorge(Elsevier, 2013-08)
In cognitive radio networks, there are scenarios where secondary users (SUs) utilize opportunistically the spectrum originally allocated to primary users (PUs). The spectrum resources available to SUs fluctuates over time ...
Ribadeneira-Ramírez, Jefferson Alexander; García Pardo, Concepción; Fuentes Muela, Manuel; Gómez Barquero, David; Cardona Marcet, Narciso(Institute of Electrical and Electronics Engineers (IEEE), 2016-03)
[EN] Across the Andean Region the Digital Television (DTT)is already in motion. While most of countries in South America have adopted the Brazilian adaptation of the Japanese DTT standard ISDB-Tb, Colombia selected the ...