Difference between FDD and TDD in wireless communication

4G LTE FDD Band 3 1800MHz 4G USB Modem with SIM Slot slot fdd While FDD networks have separate uplink and downlink frequency bands, TDD networks utilize the same bandwidth, but allocate different time slots slot icons TP LINK, 300Mbps wireless, 3G4G LTETDDFDD router, Built in Sim card slot, 2 Lan Ports

slot 66 These predefined symbol allocation of a slot called Slot Format (For the n = 0,1,2,3 s = 2,8,16,22 s = 2,8,16,22,30,36,44,50