CDMA advantages and disadvantages

SC-FDMA has drawn great attention as an attractive alternative to OFDMA, especially in the uplink communications where lower peak-to-average power ratio (PAPR) greatly benefits the mobile terminal in terms of transmit power efficiency and reduced cost of the power amplifier .

Benefits or advantages of OFDMA Hence OFDMA makes efficient use of frequency allocations in comparison to FDMA and OFDM. ➨It provides multi-user diversity. This is due to the fact that OFDMA allows different users to transmit over different parts of the frequency spectrum known as traffic channel.

SC-FDMA is a hybrid modulation scheme that combines the low peak-to-average ratio (PAR) of traditional single-carrier formats such as GSM with the multipath resistance and in-channel frequency scheduling flexibility of orthogonal frequency-division multiplexing (OFDM). Acronyms galore: LTE history and context.

SC- FDMA has a lower PAPR and lower sensitivity to carrier frequency errors while OFDMA provides better frequency diversity resulting in better immunity against multipath fading .