LTE uses OFDM as the basic signal format – OFDMA in the downlink and SC-FDMA in the uplink with various modulation formats. OFDM forms the basic signal format used within 4G LTE.
Read moreWhat is OFDMA and how it works?
OFDMA follows a set of rules created for the transmission of data between more than one terminal (any device at the end of a transmission channel, such as a computer or phone) over a transmission medium (such as a wireless network). An example of how OFDMA works is when two phones send data over the same phone line.
Read moreWhat is OFDMA in communication?
OFDMA is the multi-user variant of the OFDM scheme where multiple access is achieved by assigning subsets of time-frequency resources to different users, allowing simultaneous data transmission from several users .
Read moreWhat is OFDM what are its advantages and application?
The main advantage of OFDM over single-carrier schemes is its ability to cope with severe channel conditions (for example, attenuation of high frequencies in a long copper wire, narrowband interference and frequency-selective fading due to multipath) without the need for complex equalization filters.
Read moreWhy OFDM is used in LTE?
Using multiple carriers, each carrying a low data rate, OFDM is ideal for high speed data transmission because it provides resilience against narrow band fading that occurs as a result of reflections and the general propagation properties at these frequencies .
Read moreDoes WiFi use OFDM?
802.11a/g/n/ac radios currently use Orthogonal Frequency Division Multiplexing (OFDM) for single-user transmissions on an 802.11 frequency .
Read moreIs OFDMA FDMA technique?
1 Comparison of FDMA and OFDM signals; (a) five FDMA channels with guard band and (b) 5 OFDM orthogonal channels. Orthogonal frequency division multiplexing (OFDM) is a communication technique that can be seen as either a modulation scheme or a multiplexing technique .
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