PON Monitoring System Analysis Based On The OCDM Hybrid1D/2D Codes

The thesis illustrates the current the PON technology development and the development ofnetwork technology. The paper analyzes current PON monitoringthe technology in the accessnetwork technologies and development of PON technology in surveillance technology. With PONsystem operations, real-time online monitoring facing higher requirements, the traditional OTDRtechnology is difficult to meet the system requirements. The paper focused analysis OCDM basedPON monitoring technology, which by means of OCDM in PON technology applications, the use ofthe address code to distinguish different users real-time online monitoring user link.Secondly, this thesis detailed analysis the OCDM of1D codes and2D codes on the principle ofthe PON network online real-time monitoring system, compare the characteristics of each of thetwo monitoring programs in practical applications. The simulation system analysis based oncomparative analysis of1D codes,2D codes and monitor performance hybrid1D/2D codes in thenumber of users, the codeword interference between different users and the receiving end of thesignal-to-noise ratio. Studies have shown that the1D codes in terms of number of users in thesignal-to-noise ratio are difficult to reach2D codes performance; the hybrid1D/2D codes on theone hand the use of a1D encoder reduce client installation costs, while through2D codes decoding,monitoring performance closer to the effect of the2D codes.At last, the paper study of the hybrid1D/2D codes performance advantages on the practicalapplication of the PON network system monitoring and play an important role in guiding, proposeon-line monitoring system for multi-user research.