论文部分内容阅读
同步技术是决定误码测试精度的关键.本文分析了国外一种自同步误码检测技术的同步性能,发现其同步保持性能不够理想,为此提出一种改进方案.初步的理论分析指出,通过适当提高同步判决阀值和采用延时判决策略,可使新方案具有较强的同步保持和同步搜捕功能,具有较高的测试精度,且结构简单,易于实现.基于本方案,根据低速网络传输信道的测试要求,实现了一种新型微机化误码特征测试系统.其特点是:按CCITT建议实现了误组率和误码率的同时测量,并首次采用压缩数组方式显示和记录了误码和滑动的详细分布.
Synchronization technology is the key to determine the accuracy of the error code.This paper analyzes the synchronization performance of a self-synchronization error detection technology abroad, and finds that its synchronization performance is not ideal, so an improved scheme is proposed.A preliminary theoretical analysis shows that by Appropriately increasing the threshold value of the synchronization decision and adopting the delay decision strategy can make the new scheme have strong synchronization maintenance and synchronization search function with high testing accuracy and simple structure and easy implementation.Based on this scheme, according to the low-speed network transmission Channel testing requirements to achieve a new computerized error characterization test system which is characterized by: CCITT recommendations to achieve the error rate and the error rate of the group while measuring, and the first time the use of compressed array display and record the error code And sliding detailed distribution.