SDH误码性能的在线监测（国外英文资料）.doc

SDH误码性能的在线监测（国外英文资料） Optical communication technology OPTICAL COM M UNICATION TECHNOLOGY VO1.26 NO. 2 China radio electronics and telecommunications technology core journals Online monitoring of SDH error performance Liu Xingchun Beijing university of aeronautics and astronautics an Beijing 100083) The online monitoring of SDH error performance is introduced. Error code performance events, parameters, and bitinter-interpolation (BIP) based on blocks The principle, method, and the relevant Suggestions are expounded. Finally, the research and application of SDH and its online monitoring have been made Evaluation. Keyword error performance online monitoring bitquery interpolation (BIP) Middle image classification number TN914.332 document identification code A L introduction The ITU - T g. 826 specifies the base group and the higher rate international figures The channels error properties parameter and index, g. 828 specifies the fixed bit Rate, international synchronous digital channel error performance parameters and indicators, and G. 829 specifies the error code performance of the SDH multiplexing segment and the regeneration segment A. Both are independent of the physical transmission network supporting channels (or segments), It is suitable for all kinds of transmission systems, such as optical fiber, wire, microwave and satellite. SDH ACTS as a high-speed synchronous digital transfer that is typically used as a medium for optical fiber The network, its mis-code performance must meet the specifications of these three recommendations. With the continuous improvement of network hardware and software, the current transmission system Tong, especially the optical fiber digital transmission system, has a low error rate. Generally all Can be up to 10. Or even higher. For such a small probability It will take a long time to test the method by stopping the business And it doesnt necessarily get meaningful results, so you can only use online monitoring The long-term online