基于UWB通信系统信道编解码的FPGA实现通信与信息工程专业论文.docx

Abstract As a result of the inherent noise and the fading feature, added to shortcomings of the storage media, as well as the appearances of the new communication service and new information business, clients require better more quality for information transmission service and transmission rate. The channel coding improves the reliability for the code transmission procedure, meanwhile the tranditional code theory provides inadequate study and evidence for the UWB communication system. This thesis aims at establishing an practical FEC model for the Cchannel coding through experiments and simulations, supply a reliable basid for UWB。 This thesis includes some basic contents, which contain the edition and simulation of the source code for the Cascade Code, to design the RS code, interleaver technology and convolution code separately, meanwhile simulate them, test the ability of error correction for the RS Code and Cascade Code independently, and furtherly more analysize the difference between them, provide the actural solution of the cascade for the UWB system. This paper mainly concentrates on the following aspects: A crossive comparision of UWB, DVB-T and DVB-D, to set up their models, and to study the difference among them. To meeting the application cases, charging methods and efficiency of supercapacitors are discussed in the thesis. The charging speed and safety problems are solved by designing a high current constant-current power supply device. Designing the Interleaver and Deinterleaver code, to solve the mass error. Depending on the characteristics of the RS code, to analyze the sudden errors, supply the measures of the RS encoding and decoding. The conclusions in this thesis drawn from experiments and simulations indicate the properties of their actual model and the rules of the their applications, supply the improved theory foundation for more use. The  Error-Correction methond, that is the Reed-Solomn Code, combined with the Convolut