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802.11b is a historical wireless networking standard from the Institute of Electrical and Electronics Engineers (IEEE) that operates on the 2.4 GHz frequency band with a maximum data rate of 11 Mbps. Released in 1999, it was one of the first widely adopted standards for Wi-Fi and was significant for its speed and compatibility, which were comparable to the 10Base-T wired Ethernet standard at the time. While faster standards have since surpassed it, 802.11b was a key development that enabled the rapid growth of wireless local area networks (WLANs).

Key characteristics of 802.11b

Frequency: Operates on the 2.4 GHz band.

Maximum Data Rate: 11 Mbps (megabits per second).

Range: Approximately 35 meters indoors and 140 meters outdoors.

Modulation: Uses Direct-Sequence Spread Spectrum (DSSS) and complementary code keying (CCK) modulation.

Significance: It was a major step in the evolution of wireless networking, making wireless LANs more accessible and popular.