Some results on the undetected error probability of linear codes for pure error - detection are , at present , generalized for both error detection and correction . an analytic formula is obtained to calculate the undetected error probability of linear block codes for simultaneous error detection and correction 在只检错时，证明了纠正两个错误扩展bch码是最佳检错码； m大于4的非线性等重码( 2m ， 2 ， m )不是最佳码。
A simulation model using the 0 - 1 distribution as the bias probability distribution for both error detection and correction is put forward . the problem of optimum bias probability is solved in theoretical respect . the simulation efficiency at optimum bias probability is derived 本文提出了一个同时纠检错系统的仿真模型，并采用二项分布作为偏詈概率分布，从理论上解决了最佳偏詈概率分布问题，导出了最佳仿真效率的解析公式。
The main work of this paper is focused on the design of the latter ip module . in reader software ip design , the method of crc was used to ensure the communication reliability between the reader and responder . and the des encryption is applied to security communication 在阅读器ip软件设计中采用crc校验码检错、出错重发相结合的方法来确保应答器与阅读器的通信可靠；将des加密算法应用于系统的安全通信，最终实现了本文的设计方案。
Referring to the self - guard mechanism of g . 729 , characteristics of rs coding and scdma channel , a scheme using rs ( 7 , 5 ) coding with crc and block interleaving is put forward and its effectiveness is verified by both pesq algorithm and subjective test at the end of chapter 4 结合g . 729自身保护机制、缩短rs编码和scdma信道的特点，提出了基于rs ( 7 ， 5 )码带crc检错及帧内交织的保护方案。并在第四章末采用pesq算法验证了该保护方案的有效性。
Based on the one and a half year " s lucubration , the author gets one new error concealment way with better combination between efficiency and running time in processing the errors in video communication . according to the experiment results and relative data analysis , we can get a certain conclusion , which is that the algorithms are correct and useful 课题在开放的h . 263测试模型tmn8中实现了该算法，实现过程包括误码的检测，定位和误码部分数据的恢复等工作，并与标准h . 263的结果进行了比较，模拟结果表明，经检错和掩盖之后，解码图像质量有了显著的改善，证明了算法的正确性和实用性。
The thesis analysed the chief technique problems and designed the solution algorithms , proposed measures of the software fault tolerance techniques suitable for the hardware platform of the robotic system on the base of studying the two key techniques - eddi and cfcss . first , the thesis has done the analysis in theory for the chief technique problems including basic block partition , software signature instructions generation , shadow instructions generation and instructions scheduling , proposed the algorithms suitable for the target platform . then , the thesis introduces the design process of the software fault tolerance 本文在研究了sihft的两项关键技术?复制签名检错技术和软件签名控制流检错技术的基础上,针对小型智能飞行机器人系统的硬件平台,对软件检错技术的关键问题进行了分析并给出了解决问题的算法,提出了适于小型智能飞行机器人硬件平台的软件检错技术方案。
The hardware design which is the basis of the whole design based on sopc cooperates with the nios cpu to accomplish the functions of collecting ts information , detecting errors , and displaying information . the main content in this dissertation includes : ( 1 ) introducing the standard of mpeg - 2 system layer syntax and etr 290 standard about the three levels of detecting parameters ( 2 ) describing the structure and relationship of psi ; designing the hardware implement to accomplish the functions of collecting and analyzing ts information ( 3 ) analyzing and researching the three levels of detecting parameters to accomplish the partition of the hardware and software design , designing the detecting modules cooperated with the software and verifying the functions according to simulation ( 4 ) debugging and testing the design to verify it can achieve our requirements 论文的主要内容包括: ( 1 ) mpeg - 2传送流系统层的语法规范的介绍和dvbetr290标准中关于对码流进行三层检查和监测的参数的介绍; ( 2 )描述了传送流特殊信息之间的结构关系,介绍了用硬件方式实现码流基本信息的提取的设计方法,并将这些信息提供给软件进行分析处理和结果的显示,从而实现对码流提取和分析的功能; ( 3 )对码流的三层监测参数进行了分析研究,完成设计的软硬件划分,通过硬件设计方式完成对各个监测模块的开发工作和时序仿真验证,实现码流监测功能; ( 4 )介绍了对码流基本信息进行提取、分析和码流检错的硬件设计的调试情况和实验验证工作,以及最后与软件设计部分进行联合调试的情况
The transport stream detector which is used to analyze and detect ts can accomplish the functions of collecting information , analyzing and detecting the errors of ts , displaying of information , and etc . the dissertation discusses a way of hardware implement to detect ts which is a part of design of transport stream detecting based on sopc . it uses fpga to collect and analyze program special information ( psi ) and service information ( si ) , to find and store the pid numbers of every program and psi 、 si , and to detect errors of ts 本文详细介绍了利用硬件方式实现码流监测的设计方案,它作为整个课题? ?基于sopc的码流监测设计的硬件结构部分,实现了在fpga芯片内对码流信息的采集,包括节目专用信息( psi ) 、业务信息( si )的提取和分析,各套节目和psi 、 si表的pid值的查找和存储,以及对三层码流检错参数的监测。
The concept of good codes and proper codes for both error detection and correction is presented . it is shown that the binary perfect codes and the primitive double - error - correcting bch codes and their extended codes are proper for both error detection and correction . the primitive triple - error - correcting bch codes with length 2 " " - 1 and their extended codes are proper for odd m > 5 , not for even m > 6 本文的主要工作是把目前关于只检错时线性码不可检错误概率的研究推广到同时纠错和检错的情况，获得了同时纠检错时线性码不可检错误概率的解析表达式，提出了纠检错好码和最佳纠检错码的概念，并证明了二进制完备码及其扩展码是最佳纠检错码；纠正两个错误二进制本原bch码及其扩展码是最佳纠检错码；码长n = 2 ~ m - 1 、纠正三个错误本原bch码，当m为大于等于5的奇数时是最佳纠检错码；当m为大于等于6的偶数时，不是最佳码。
The american argos satellite has done experiments on the primary anti - radiation measures of cots components , and has obtained valuable experiment datas . the software fault tolerance techniques sihft provide error detection coverage of over 99 % , attracted researchers ’ attention . the experiment has demonstrated that it ’ s possible to satisfy the requirement of space applications by software techniques without special hardwares 其中,软件容错技术sihft ( softwareimplementedhardwarefaulttolerance )达到了大于99 %的检错覆盖率,引起了人们的关注。这项实验说明了在不需要专用硬件的情况下,使用软件技术也能达到航天应用的可靠性要求。
