【摘要】 在介绍了FEC和ARQ技术的优缺点及分析了Turbo码迭代译码特点的基础上,提出了一种应用于ARQ系统中的Turbo码新型迭代译码方案,在不增加译码复杂度的前提下,首发帧和重发帧交替迭代,充分利用两帧的信息。在AWGN信道和相干瑞利信道下的仿真结果表明,新方案能显著改善译码性能。更多还原

【Abstract】 This paper introduces the advantages and weaknesses of both FEC and ARQ techniques,and analyzes the specialities of the Turbo decoding. A novel Turbo decoding solution for ARQ system is proposed .The solution iterates the first transmitted frame and the retransmitted frame alternately and makes full use of the information of the two frames without increasing calculation complexity. Simulation results for AWGN and correlative Rayleigh fading channels show that the solution improves the performance of Turbo decoding effectively.更多还原