Main Topic:ProtocolandSpectrum AnalysisQuestion:HR/DSSS specifies the following PHY rates:

Comprehensive and Detailed Explanation:

High Rate Direct Sequence Spread Spectrum (HR/DSSS) is associated with the IEEE 802.11b standard, which specifies the following physical layer (PHY) data rates:

1 Mbps and 2 Mbps:Achieved using Differential Binary Phase Shift Keying (DBPSK) and Differential Quadrature Phase Shift Keying (DQPSK) modulation techniques, respectively.

5.5 Mbps and 11 Mbps:Achieved using Complementary Code Keying (CCK) modulation, which allows higher data rates while maintaining robustness against interference.

These rates are specific to the 802.11b standard operating in the 2.4 GHz band.