The physical layer specifications for LTE systems are provided in [12,13].
In general, the LTE frame structure is shown in Fig. 2, consists of ten subframes, each of which has 1 ms duration.
Each subframe is further divided into two slots of 0.5 ms each. Each slot can hold 7, 6 or 3 OFDM symbols depending on whether the cyclic prefix is normal or extended.