There are a number of key technologies that will enable LTE Advanced to achieve the high data （ ） rates that are required．（ ） are two of the base technologies that will be enablers．Along with these there a number of other techniques and technologies that will be employed．

A．input

B．output

C．throughput

D．receiving

A．MIMO and OFDM

B．MIMO and CDMA

C．MIMO and EDGE

D．MIMO and TDMA

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