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computersystemlectures
- An OFDMA system is considered in which minimum allocation unit is one Physical Resource Block (PRB) containing 12 sub-carriers in each TTI of 1 ms duration.
OFDMA
- OFDM is a frequency-division multiplexing (FDM) scheme used as a digital multi-carrier modulation method. A large number of closely spaced orthogonal sub-carrier signals are used to carry data on several parallel data streams or channels.