AND 54MBPS, ALTHOUGH HIGHER RATES ARE POSSIBLE USING PROPRIETARY TECHNOLOGY AND ATECHNIQUE KNOWN AS RATE DOUBLING

48, and 54Mbps, although higher rates are possible using proprietary technology and atechnique known as rate doubling.Unlike 802.11b, 802.11a does not use spread-spectrum and Distributed Quadrature PhaseShift Keying (DQPSK) as a modulation technique at the physical layer; instead, it uses a mod-ulation technique known as Orthogonal Frequency Division Multiplexing (OFDM).To be 802.11a compliant, devices are only required to support data rates of at least 6,