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 moreWhy there is need of OFDM role of OFDM in 5G?
5G Cellular Technology Tutorial Includes: OFDM gives good spectral efficiency whilst providing resilience to selective fading and it also enables multiple access capability to be implemented using OFDMA .
Read moreDoes 5G use SC FDMA?
Unlike LTE, 5G NR also supports CP-OFDM in the uplink direction. But LTE’s discrete Fourier transform spread OFDM (DFT-s-OFDM) uplink scheme, better known as single carrier frequency division multiplex (SC-FDMA), is still a valid access scheme and support is mandatory for any 5G terminal.
Read moreIs 5G NR supports OFDM?
5G NR supports a wide variety of use cases, and the OFDM numerologies help with supporting these use cases effectively . When higher frequency bands are used, the Doppler shift increases. An increased Doppler shift means increased Inter Carrier Interference (ICI).
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