[1] YANG G C,WING C K.Performance comparison of multiwa velength CDMA and WDMA+CDMA for fiber-optic networks[J].IEEE Trans Commun,1997,45(11):1426-1433.

[2] TANCEVSKI L,ANDONOVIC I.Wavelength hopping/time spreading code division multiple access systems[J].Electronic letters,1994,30(17):1388-1390.

[3] TANCEVSKI L,ANDONOVIC I.Hybrid wavelength hopping/time spreading schemes for use in massive optical networks with increased security[J].Journal of LightwaveTechnology,1996,14(12):2636-2647.

[7] WEN J H,LIN J Y,LIU C Y.Modified prime-hop codes for optical CDMA systems[J].IEEE Proc-Commun,2003,150(5):404-408

[9] LI B.One-coincidence sequence with specified distance between adjacent symbols for frequency-hopping multiple access[J].IEEE Transactions on Communications,1997,45 (4):408-410.