The most obvious difference between the two schemes is that OFDMA transmits the four QPSK data symbols in parallel, one per subcarrier, while SC-FDMA transmits the four QPSK data symbols in series at four times the rate , with each data symbol occupying a wider M x 15 kHz bandwidth.
Read moreWhat is DFT spread 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).
Read moreWhat is the advantage of single carrier FDMA comparing to OFDMA?
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.
Read moreWhat is the function of LTE?
LTE (Long Term Evolution) is a mobile communication standard . In the cellular network, mobile data can be transferred over the air in larger amounts and at higher speeds than was possible under earlier wireless communication standards.
Read moreHow does 4G architecture work?
In the 4G architecture we are working with, base stations are invisible to the IP layer of terminals . When a terminal sends an IP packet, it sends it to the gateway that all base stations are connected to. Base stations only relay layer 2 packets between terminals and the gateway.
Read moreHow does an LTE network work?
How Does LTE Work? LTE moves large packets of data to an internet protocol system (IPS) . … Lower transfer latency means data moves faster, providing the basic benefit of being able to do things with mobile devices that the slower speeds of earlier-generation cellular networks simply couldn’t accomplish.
Read more