Among various incoherent OCDMA schemes, we focus on a typical two-dimensional OCDMA scheme, wavelength-hopping time-spreading (WHTS), because of its code flexibility and better code performance compared with other schemes [39].
Among various incoherent OCDMA schemes, we focus on a typical two-dimensional OCDMA scheme, wavelength-hopping time-spreading (WHTS), because of its code flexibility and better code performance compared with other schemes [39].