摘要
Turbo码以其优越的性能在通信系统中越来越受到人们的重视。由于Turbo码译码算法的复杂性,译码器通常需占用大量的存储空间和较长的运算时间,难以满足实际系统的要求。本文在深入研究Max-Log-MAP译码算法的基础上,对该算法进行了合理优化,提出了一种基于DSP的高效的软件实现方法。基于此方法实现的Turbo码译码器具有较低的误码率和较小的译码时延,在语音通信和数据通信中具有广泛的应用前景。
More and more attention is focused on Turbo codes in communication system for their good performance. As the high complexity of the decoding algorithm, a common decoder needs a lot of memory space and much computation time, which can＇ t satisfy the requirement of the practical system. Based on the intensive research on the Max - Log - MAP algorithm of the turbo codes, the decoding algorithm was optimized and an efficient software method on DSP is presented in this paper. The turbo decoder based on the software method has low bit error rate with a small decoding delay, which has shown a broad application in speech communication and data communication.
出处
《电子测量与仪器学报》
CSCD
2005年第5期72-76,共5页
Journal of Electronic Measurement and Instrumentation
基金
河北省教育厅资助项目(编号:Z2001213)
华北电力大学青年科研基金项目(编号:09320010)
