IMPLEMENTATION OF FIBER OPTIC CODE DIVISION MULTIPLE ACSESS

This research investigate one such scheme, namely, fiber_optic code division multiple access(FO_CDMA). This scheme takes advantage of excess bandwidth in single mode fibers to map low information rate electrical or optical signals into high rate optical pulse sequences to achieve random, asynchronous communications access, free of network control among many users. To minimize interference between users optical orthogonal codes , which have a specific cross_correlation and atutocorrelation properties, are used to construct users` codes.The burgeoning demand on communication _assets for services such as database queries and updates, home shopping, video on demand, remote education, tele_medicine , and video conferencing needs a new transmission media that are able to carry this huge amount of information, fiber potic cables provide a solution to this problem .To access the increasing number of users, the code division multiple access presents a solution to this delmma. This research investigate one such scheme, namely, fiber_optic code division multiple access(FO_CDMA). This scheme takes advantage of excess bandwidth in single mode fibers to map low information rate electrical or optical signals into high rate optical pulse sequences to achieve random, asynchronous communications access, free of network control among many users. To minimize interference between users optical orthogonal codes , which have a specific cross_correlation and atutocorrelation properties, are used to construct users` codes