i cant understand that why Sum(dk)=W after eq. no. 18 in your paper "Development of anew code family based on Sac--ocdma systems with large cardinality for ocdma network"
in paper "Development of anew code family based on Sac--ocdma systems with large cardinality for ocdma network" you gives that I=(RPsrW2/N) but in the paper "modlling and simulation of a 1.6 Tb/s based on MD code and OCDMA" you gives I=(RPsrW/N) which one is correct