J. N. Sinulingga, A. Wahyudin, and M. A. Amanaf, “ANALYSIS OF DESIGNING LTE-A RELEASE 12 WITH CARRIER AGGREGATION INTERBAND TECHNIQUE ON 1800 MHz FREQUENCY AND 2300 MHz OPERATOR X IN CENTRAL SEMARANG CITY”, JETT, vol. 5, no. 1, pp. 634–645, Sep. 2018.