Which of the following key technologies is used to improve data transmission reliability and reduce retransmission caused by data transmission errors, Thereby indirectly improving spectral efficiency? _SC

Which of the following key technologies is used to improve data transmission reliability and reduce retransmission caused by data transmission errors, Thereby indirectly improving spectral efficiency? _SCA . F-OFDMA //B . High-order modulationC . Channel coddingD . Massive MIMO View Answer Answer: C...