多用户环境下的无线通信设计

多用户环境下的无线通信设计:+,7(3$3(5RFcommunicationinamulti-userenvironment*(1(5$/SincemoreandmoresystemsareusingRFcommunication,andmostofthemareoperatinginanISM(Industrial,Scientific,Medical)bandtheneedforawaytoharmonizethecoexistenceofsystemsusingthesamefrequencyresources,areurgent.InthiswhitepaperwewilldiscussdifferenttechniquesfordealingwiththeproblemscausedbyRFtrafficfromothersystemsthanourown.7(&+1,48(6)25+$1'/,1*',6785%,1*75$)),&TherearedifferentwaysonhowasystembasedonacombinationofTDMA(TimeDivisionMultipleAccess)andFDMA(FrequencyDivisionMultipleAccess)usesthetimeandfrequencydomain.Mostofthesystemshavea“bursty”useofthetimedomain,meaningthattheytransmitinshortbur