Physical Layer OperationsPhysical LayerPLCP Protocol Data Unit2.4 GHz Communications5 GHz CommunicationsAdjacent, Nonadjacent, and Overlapping ChannelsClause 14 FHSS PHYClause 15 DSSS PHYClause 17 OFDM PHYClause 18 HR-DSSS PHYClause 19 ERP PHYClause 20 HT PHYSummaryExam EssentialsKey TermsReview QuestionsAnswers to Review Questions