Frame Structure - Downlink

One good way to study this kind of thing and get some practical understanding would be to start from the view from the highest level and get deeper into it step by step.

Overvall Frame Structure Overview-FDD Overview-TDD Physical Channels PBCH(Physical Broadcast Channel) The first L(1 or 2 or 3) Symbols PCFICH(Physical Control Format Indicator Channel) PDCCH(Physical Downlink Control Channel) PHICH PDSCH(Physical Downlink Shared Channel) PRACH Synchronization Signal P-SS(Primary Synchronization Signal) S-SS(Secondary Synchronization Signaling) Reference Signal RS (Reference Signal) - Cell Specific (Antenna port 0,1,2,3) RS (Reference Signal ) - MBSFN (Antenna Port 4) RS (Reference Signal ) - UE Specific (Antenna Port 5,7,8,9,10) RS (Reference Signal ) - Positioning (Antenna Port 6) RS (Reference Signal ) - CSI (Antenna Port 15,16,17,18,19,20,21,22) Whole Frame Snapshot Physical Channels in Communication Gallery

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