What transmission technique is used with wireless devices in the 5-GHz radio band and can achieve high data rates?

The transmission technique that is commonly used with wireless devices operating in the 5-GHz radio band and capable of achieving high data rates is Orthogonal Frequency Division Multiplexing (OFDM).

OFDM works by dividing a high data rate signal into multiple lower data rate streams that are transmitted simultaneously over different frequencies. This division allows for better use of the available spectrum and increased resistance to interference and multipath fading, which are common challenges in wireless communications. The 5-GHz band, offering broader channels than lower frequency bands, effectively leverages OFDM to support high throughput and efficient signal transmission, making it ideal for applications such as Wi-Fi (specifically 802.11a/n/ac/ax standards).

This technique’s ability to handle high data rates and its robustness in various channel conditions contribute significantly to its widespread adoption in modern wireless communication standards.