Research on Decoding Performance of Turbo Codes

Turbo codes are based on the idea of random encoding and the performance approaches the Shannon limit by combining convolutional encoding with interleaver, so they are used in 3G including the other power-limited area such as deep sea communication and satellite communication. Turbo codes theory and decoding algorithms are presented. The performance of Turbo codes is simulated with Matlab. The influence on the performance of Turbo codes, which is resulted from the iterations, decoding algorithms, frame sizes and sub-codes, is studied. The simulation results show that Turbo codes are of good performance in error correcting and have wide application prospect.