A new family of optical code sequences for spectral-amplitude-coding optical CDMA systems

• Main Authors: Syed Junid, Syed Alwee Aljunid, Ismail, Mahamod, Ramli, Abdul Rahman, Mohd Ali, Borhanuddin, Abdullah, Mohamad Khazani
• Format: Article
• Language: English
• Published: Institute of Electrical and Electronics Engineers 2004
• Online Access: http://psasir.upm.edu.my/id/eprint/40005/1/A%20new%20family%20of%20optical%20code%20sequences%20for%20spectral-amplitude-coding%20optical%20CDMA%20systems.pdf; http://psasir.upm.edu.my/id/eprint/40005/
• Institution: Universiti Putra Malaysia

A new code structure for spectral-amplitude-coding optical code-division multiple-access system based on double-weight (DW) code families is proposed. The DW code has a fixed weight of two. By using a mapping technique, codes that have a larger number of weights can be developed. Modified double-weight (MDW) code is a DW code family variation that has variable weights of greater than two. The newly proposed code possesses ideal cross-correlation properties and exists for every natural number n. Based on theoretical analysis and simulation, MDW code is shown here to provide a much better performance compared to Hadamard and modified frequency-hopping codes.