简介：Thetransmissionantennasofcooperativesystemsarespatiallydistributedonmultiplenodes,sothereceivedsignalcanbeasynchronousduetopropagationdelays.Areceivingschemeforcooperativerelaynetworksisproposed,multipleasynchronoussignalsarereconstructedatthereceiverbyforwardandbackwardinterferencecancellation,whichcanobtaingainsofcooperativetransmissiondiversitywithobviousdelayandwithnorequiringtimingsynchronizationororthogonalchannelizationbetweenrelays.Analysisandsimulationshowthatthebiterrorrate(BER)oftheproposedschemeissimilartoAlamouticode,andtheschemehasthediversityorderoforthogonaltransmissionschemeaccompaniedbyminimalBERlosses.Itisdemonstratedthattheperformancecanbefurtherimprovedbyaddinganerrorcorrectingcode(ECC).