Modified prime-hop codes for optical CDMA systems

• DOI: 10.1049/ip-com:20030478
• Publication Date: 2003-11-11T15:42:52Z
• Authors: J.-H. Wen; J.-Y. Lin; C.-Y. Liu
• Keywords: Turbo code; Tornado code; Luby transform code; Raptor code

In the early stage of optical CDMA systems, spreading codes, such as orthogonal codes (OOCs) and prime are only coded in time domain. However, small code size becomes major issue for one-dimensional codes. To deal with this limitation a new family two-dimensional is proposed systems. The modified from well known prime-hop Hence, authors refer to 'modified codes'. preserve same correlation properties original i.e. cross-correlating constraint equal one autocorrelation zero, can be generated lower cost, complexity power loss encoders/decoders. Meanwhile, systems perform better accommodate more users than those