摘要
讨论了Turbo码的编译码基本原理,对Turbo码的性能进行了分析;编码采用并行级联的循环系统卷积码,译码器则为迭代的串行级联译码器,进行随机交织,经过高斯白噪声信道传输;进行了计算机仿真,比较了对数的最大似然译码算法与软输出的Viterbi译码算法在不同信噪比条件下的比特误码率.
The paper analyzes the performance of the turbo codes on the basis of the principles of the coding and decoding. The turbo code encoder is built using two identical recursive systematic convolutional (RSC) codes with parallel concatenation. The decoder is built using two iterative soft-output Viterbi algorithm decoders serially. We use random interleaver and an AWGN channel. The computer simulation compares the performance of bit error rate of the log-MAP and SOVA under the different signal-noise ratio.
出处
《装备指挥技术学院学报》
2003年第3期57-60,共4页
Journal of the Academy of Equipment Command & Technology
