Uni-polar Orthogonal Codes : Design, Analysis and Applications

The uni-polar orthogonal codes, with code length 'n' and code weight 'w' having auto-correlation and cross-correlation constraints equal to 1, can be designed with proposed algorithm. This proposed scheme design all the possible groups containing maximum number of orthogonal codes as per Johnson bounds. In this case, each of the designed groups is independent with other groups of uni-polar orthogonal codes having similar length, and weight. The uni-polar orthogonal codes from any of the designed groups can be utilized for generation of optical signature sequences for assignment to users of Incoherent Optical Code Division Multiple Access (OCDMA) system in spread spectrum communication over optical fiber. All other designed groups of unipolar orthogonal may be utilized for security performance improvement, increasing spectral efficiency and BER performance improvement of the OCDMA systems Keywordsauto-correlation; cross-correlation; Orthogonal binary sequences;