关键词: Turbo码, 交织器, 并行译码, 无冲突, S-random

Abstract: To improve the decoding performance of Parallel Decoding Turbo Codes (PDTC), a memory collision-free interleaver to avoid the data collision was proposed. The information was written into a matrix first, and then S-random interleaving was done on its rows and columns. The simulation shows the distances spectrum of this interleaver is close to the full random interleaver, the bit error rate performance of PDTC is better than other interleavers which have the same algorithm complexity, and with the increase of the length frame, the improved result is more obvious. Hence this design has outstanding performances in PDTC.

Key words: Turbo code, interleaver, parallel decoding, collision free, S-random