Dft-s-ofdm vs sc-fdma

1. How does SC-FDMA differ from OFDMA?
2. What is the advantage of SC-FDMA over OFDM?
3. What is DFT OFDM?
4. What is OFDM and SC-FDMA in LTE?

How does SC-FDMA differ from OFDMA?

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.

What is the advantage of SC-FDMA over OFDM?

Owing to its inherent single carrier structure, a prominent advantage of SC-FDMA over OFDM and OFDMA is that its transmit signal has a lower peak-to-average power ratio (PAPR), resulting in relaxed design parameters in the transmit path of a subscriber unit.

What is DFT OFDM?

The DFT-spread OFDM is a form of single-carrier technique that possesses almost all advantages of the multicarrier OFDM technique (such as high spectral efficiency, flexible bandwidth allocation, low sampling rate, and low-complexity equalization).

What is OFDM and SC-FDMA in LTE?

One of the key elements of LTE is the use of OFDM (Orthogonal Frequency Division Multiplex) as the signal bearer, as well as OFDM's associated access schemes, OFDMA (Orthogonal Frequency Division Multiple Access) and SC-FDMA (Single Carrier Frequency Division Multiple Access).