The 802.11a standard uses the same core protocol as the original standard and was the first of the 802.11 family to operate in the 5 GHz band. It uses a 52-subcarrier orthogonal frequency-division multiplexing (OFDM) with a maximum raw data rate of 54 Mbit/s, which typically yields a throughput in the mid-20 Mbit/s.
Read moreHow does OFDM work on Wi-Fi?
OFDM takes an RF channel, such as the 20 MHz channel often used in Wi-Fi, and instead of using a single carrier-frequency modulated by AM, FM, or other means, sets out a number of sub-carriers. 802.11ac used 52 data-carrying sub-carriers in a 20 MHz RF channel, while 802.11ax has 234.
Read moreWhat is OFDM wireless?
Orthogonal frequency-division multiplexing is a method of data transmission where a single information stream is split among several closely spaced narrowband subchannel frequencies instead of a single Wideband channel frequency .
Read moreIs OFDM used in 2.4 GHz?
OFDM-based wireless LANs will be implemented in the 2.4GHz ISM band as well as the 5GHz band. OFDM WLANs provide very high data rates, resilience to multipath and extended operating range.
Read moreHow OFDMA operate in 4G LTE communication?
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 more