A new two-dimensional code for optical code division multiple access systems

Abstract

In this paper, we propose a new family of two-dimensional codes for optical CDMA systems. The new codes are modified from the well-known prime-hop codes. Hence, we refer the new codes as modified prime-hop codes. The modified prime-hop codes preserve the same code correlation properties as original prime-hop codes (cross-correlating constraint equals one and autocorrelation constraint equals zero). Furthermore, the proposed codes can be generated with low cost, low complexity and low power loss encoder/decoder. In addition, more simultaneous users also can be accommodated in our proposed system.