Simulation of Turbo Code System Based on Simulink
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摘要: 在Turbo码编码、译码基本理论和结构的基础上,提出了一种用Simulink构建的Turbo码编、译码可控仿真模型,并在BPSK(binary phase-shift keying)调制的高斯白噪声信道(AWGN)中进行了系统建模和仿真实验.通过研究Turbo编码、卷积编码和无信道编码方案仿真系统的BER(bit error rate)性能,结果表明,所提出的Turbo编码的误码率优于其他2种方案1个数量级以上,尤低信噪比时更具优势.Abstract: Based on the theory and architecture of Turbo coding and decoding,a model of Turbo code simulation for controllable coding/decoding was designed with software Matlab/Simulink and used in the system with BPSK(binary phase-shift keying) modulation in AWGN(additive white Gaussian noise) channel.An investigation into BER(bit error rate) of the Turbo coding/decoding system and two conventional systems shows that compared with the two conventional systems,BER of the developed Turbo coding system decreases by one order of magnitude,and this advantage is even more obvious in the case of low signal-noise ratio.
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Key words:
- Simulink /
- Turbo code /
- bit error rate(BER)
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