A modified chua\s circuit

L.M.Peroca,T.L.Corroll,Synchronization in chaotic systems,Phys.Rev.Lett.1990.64(8).821-824.[2]N.J.Corron,D.WV.Hahs,A new approach to comnmnications using chaotic signals.IEEE Trans.on CAS-I,1997,CAS-I-44(5),373-382.[3]G.Kolumban,M.P.Kennedy,L.O.Chua,The role of synchronization in digital communications using chaos-Part II: Chaotic modulation and chaotic synchronization,IEEE Trans.on CAS-I.1998,CAS-I-45(11),1129-1139.[4]U.Parlitz,S.Ergezinger,Robust communication based on chaotic spreading seqnences.Phys.Lett..A,1996,188,146-150.[5]G.Heidari-Bateni,C.D.McGillem,A chaotic direct-sequence spread-slpectrum communication systems,IEEE Trans.on Comm.,1994,COM-42(2/3/4),1524-1527.[6]D.J.Sobiski,J.S.Thorp,PDMA-II: The feedback Kahnan filter andl simultaneous multilple access of a single channel,IEEE Trans.on CAS-I,1998,CAS-I-45(2),142-149.[7]M.P.Kennedy,Three steps to chaos-Part II: A Chuas circuitt primer,IEEE Tirans.on CAS-I.1993,CAS-I-40(10),657-674.[8]尹元昭,混沌同步和混沌保密通讯的实验研究,电子科学学刊,1998,20(1),93-97.