Chase Algorithm-based Turbo Product Code Decoding Algorithms And Applications

With the development of mobile communication technology, the reliability and efficiency of information transmission have remained an attractive research topic, and the main objective of high speed communication system is to maintain the correct transmission at low power consumption, thus the channel coding can effectively solve this problem. Turbo product code is a new type of error correction coding and it inherited the powerful performance of Turbo code, because Turbo product code been constructed by the linear block codes, its iterative decoding is traditionally performed using several decoders whose computational complexity can be considerable. In recent years, research in the field of turbo product code becomes hotspot and its applications have broad prospects.This paper describes the digital communication system model and the development of channel coding firstly, and then introduce TPC encoding structure, sub-code selection and application areas. Secondly, the analysis of soft-input soft-output decoding algorithm based on Chase algorithm is provided and the detailed implementation procedure is proposed, as well as the simulation analysis of the various factors that affect the decoding performance provide powerful supports for compromise strategy.Finally,A special structure of TPC is introduced, and it uses Hamming code as sub-code. Then a decoding algorithm implementation is introduced based on Chase decoding algorithm, and presents an improved Chase algorithm for the purpose of lowing decoding complexity and saving hardware resources. The fixed-point simulation of TPC could obtain 7.2dB gain compared to uncoded situation. The research results of this thesis provide application information for high-speed data transmission.