The Evolution of Double Weight Codes Family in Spectral Amplitude Coding OCDMA

This paper presents the review of Double Weight (DW) codes family from perspective of codes evolution since beginning until now. First generation focuses on one-dimensional (1D) code which spreading has been carried out in time. Later, the second generation was introduced known as two-dimensional (2D) code where the encoding of data bit has spread in both wavelength and time domain. Codes construction and variety of detection techniques scheme used in DW codes family are also discussed. In this paper we focus on structure of among DW codes family as all the design of code sequence aim to eliminate Multiple Access Interference (MAI). Previous papers of DW codes family show a good quality of transmission and satisfactory the standard quality of Bit Error Rate (BER) above 10−9.

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