2Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications: Higher-Speed Physical Layer Extension in the 2. 4GHzBand [S].IEEE Std. 802.11b. 1999.
3Wireless LAN Medium Aceess: Control (MAC) and Physlcal Layer (PHF) speed-Speed Physical Layer Extension in the 5GHz Band[S]. IEEE Std. 802. 11a.1999.