Li Yongping, Zhang Xingzhou. Design and analysis of a two-dimension code for asynchronous OCDMA systems[J]. 2010,(6):61-63. DOI: 10.13756/j.gtxyj.2010.06.010.
The asynchronous OCDMA system is a hot spot attracting much attention in recent years
but the study on the two-dimension code words appropriate for this system remains to be a blank.In this paper
the correlation of the Extended Quadratic Congruence(EQC) code in the system is analyzed and the method for constructing a two-dimensional time/frequency code for the system is given.The analysis of the autocorrelation and cross-correlation characteristics of the address code shows that the new code constructed with EQC and OOC has good autocorrelation and cross-correlation characteristics.