The Research And Implementation Of Turbo Encoding And Decoding Methods In WCDMA System

The priciple of Turbo code and relative algorithms are analyzed in detail in this paper. To solve high complexity of algorithms , long time delay and large store space about the application of Turbo in WCDMA system, A feasible implementing scheme of the Turbo encoding and decoding system is put forward. Based on optimizing the interleave algorithm of 3GPP, a turbo encoder is implemented using FPGA technique. Based on optimizing the Max-Log-MAP algorithm , a turbo decoder is implemented using DSP technique. A whole Turbo system is finished through interfaces. This work can provide theory basis and design reference for the application of Turbo technology in WCDMA system. Xie Xiaojun(Communication and Information Systems)Directed by prof. Yin Chengqun...