•The original version of the standard IEEE 802.11 was released in 1997, but is basically obsolete today. It specified bit rates of 1 or 2 megabits per second (Mbit/s). It specified three alternative physical layer technologies:
•Diffuse infrared operating at 1 Mbit/s
•Frequency-hopping spread spectrum operating at 1 Mbit/s or 2 Mbit/s
•Direct-sequence spread spectrum operating at 1 Mbit/s or 2 Mbit/s