What is OFDM? OFDM is a digital transmission scheme that is commonly used in standards such as WiFi, LTE, and 5G. Discover how to build, test, and analyze standard-compliant OFDM waveforms using functions and apps from MATLAB®, Simulink®, and wireless communications toolboxes. Learn how...
MIMO (multiple input, multiple output) is an antenna technology for wireless communications in which multiple antennas are used at both the source (transmitter) and the destination (receiver). The antennas at each end of the communications circuit are combined to minimize errors, optimize data speed...
What's the difference between OFDM and OFDMA? OFDM (orthogonal frequency-division multiplexing) is an older, related technology for increasing wireless capacity and efficiency. OFDM has been used in areas such as cellular networking and broadcast media and in previous versions of Wi-Fi. ...
802.11g standardized the use of OFDM technology used in 802.11a in the 2.4GHz band. It was backwards compatible with both 802.11 and 802.11b. 802.11g is an older standard and has been largely replaced by newer technology. 802.11n Once the most popular standard 802.11n was the first time ...
What is 5G? Learn about 5G tech and explore how Samsung is revolutionizing 5G networks to build a connected world that transforms the business experience.
Before 802.11ax, the OFDM mode was used for data transmission, and users were distinguished based on time segments. In each time segment, one user occupied all subcarriers and sent a complete data packet, as shown in the following figure. Figure 1-3 OFDM working mode OFDMA is a more effic...
OFDM also has several advantages compared to standard frequency-division multiplexing. Theradio frequencyreceiver is simpler in OFDM because the entire signal can be received in a single frequency selective filter and separated in software using a fast Fourier transform, while an FDM system requires a...
Before 802.11ax, the OFDM mode was used for data transmission, and users were distinguished based on time segments. In each time segment, one user occupied all subcarriers and sent a complete data packet, as shown in the following figure. Figure 1-3 OFDM working mode OFDMA is a more effic...
Data Over Cable Service Interface Specification (DOCSIS) is an international telecommunications standard that adds high-bandwidth data transfer capability to an existing cable television (CATV) system. Many cable television operators use it to provide cable Internet access over their existing hybrid fiber...
What is DFT's OFDM in 5G? Direct Fourier Transform spread OFDM, commonly abbreviated to DFT-s-OFDM, is an SC or single carrier-like transmission scheme that can be combined with OFDM that gives significant flexibility for a mobile communications system like 5G. It is more commonly known as ...