DESIGNING SOPC-BASED TURBO DECODER

TurbO码的译码性能几乎接近SHAnnOn理论极限,实现TurbO译码器对于降低信道传输的误码率、提高传输可靠性具有重要的意义。借助XIlInX Edk软硬件开发工具构建了一个TurbO译码器和以太网络传输的SOPC系统,实现了网络通信下的TurbO译码,并将所构建SOPC系统的硬件比特流和软件程序下载到XIlInX公司的SPArTAn-3S1500开发板上验证成功。实验结果表明,所设计的SOPC系统能实现数据的动态传输和信道纠错。Decoding performance of Turbo codes almost approaches to the limit of Shannon theory.The implementation of Turbo decoder is important for reducing the error bits rate in channel transmission and improving transmission reliability.An SoPC system of Turbo decoder and Ethernet-transmission is constructed by using the tool of Xilinx EDK software and hardware development,which realises the Turbo decoding in network communication.The hardware bit stream and software program of the constructed SoPC system are downloaded to Spartan-3s1500 development board of Xilinx Inc.and their correctness are proved successfully.Experiments show that the designed SoPC system can realise dynamic data transmission and channel's error correction.福建农林大学青年教师科研基金项目(08B24

Application of Turbo Codes in Quantum Key Reconciliation

根据TurbO码的译码原理,提出了一种TurbO码在量子密码通信(QCC)中对量子密钥进行数据协调的应用方案.首先,介绍了利用TurbO码作为数据协调方法的QCC的总体方案和TurbO码在QCC中应用的原理;其次,阐述了利用XIlInX Edk软件平台进行TurbO译码器和以太网络模块的SOPC的设计;最后,给出了TurbO码数据协调在QCC中应用的方案,将构建的SOPC应用到QCC中,并对实验结果进行了分析.According to Turbo decoding theory,this paper presents an application scheme of quantum key reconciliation in quantum cryptography communication(QCC) using Turbo codes.Firstly,the overall program of QCC using Turbo-codes reconciliation and application Principle of Turbo codes in QCC are introduced.Secondly,the SoPC design of Turbo decoder and Ethernet-transmission module based on Xilinx EDK is discussed.Finally,the application of Turbo codes reconciliation in QCC is presented and the designed SoPC is applied to QCC.Experiment results are presented and analyzed.国家自然科学基金项目(60672046