Up2.pdf.zip_802.11_zip

International Journal of Computer Applications (0975 – 8887)

Volume78– No.1, September 2013s

14

2.4GHz 5GHz 4.9GHz 3.65GHz 5.9GHz 60GHz

Figure 1: The 802.11 PHY Layer Amendments and Their Dependencies

2. PHY RELATED AMENDMENTS

to the Digital Enhanced Cordless Telecommunications

standard. Neither 802.11 nor Home RF saw FHSS extensions,

despite ideas for a second generation Home RF occurred that

directed at 10 Mbps. In contradict, the high data-rate scheme

802.11b was originated in December 1997 and sustained the

data rates of the DSSS PHY to 11 Mbps. This induced

802.11b to eventually override FHSS, containing Home RF,

in the market. Figure 1 specifies a sketch of the 802.11 PHY

amendments and their dependencies [8].

2.1 IEEE 802.11a

802.11g, which carried the advantages of OFDM to the 2.4

GHz band.

Table 2 shows the physical layer parameters of the IEEE

802.11a.

Table 2: The IEEE 802.11a Physical Layer Parameters