| Title |
Parallel Transmission and Recovery Methods of Images Using the Two Dimensional Fiber-Optic Code-Division Multiple-Access System |
| Authors |
이태훈(Lee, Tae-Hoon) ; 박영재(Park, Young-Jae) ; 서익수(Seo, Ik-Su) ; 박진배(Park, Jin-Bae) |
| Keywords |
Two-dimensional fiber-optic CDMA ; Parallel transmission ; OOSPC ; BIBD ; decomposed bit-plane method |
| Abstract |
Two-dimensional(2-D) fiber-optic code-division multiple-access(FO-CDMA) system utilizes the optical orthogonal signature pattern code(OOSPC) to encode and decode 2-D data. Encoded 2-D data are spatially multiplexed and transmitted through an image fiber and receiver recovers the intended data by means of thresholding process. OOSPC's construction methods based on expansion of the optical orthogonal code, which is used in one-dimensional(1-D) FO-CDMA system, are introduced. Each OOSPC's performances are compared by using the bit error rate(BER) of interfering OOSPC's of other users. From the results we verify that a balanced incomplete block design(BIBD) construction has the best performance among other mehtods. We also propose a decomposed bit-plane method for parallel transmission and recovery of 256 gray-scale images using OOSPC's constructed by the BIBD method. The simulation result encourages the feasibility of parallel transmission and recovery of multiuser's images. |