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水下数据传输Turbo码译码系统的实现
高春仙¹, 刘慧¹
厦门大学通信工程系, 教育部水声通信与海洋信息技术重点实验室

摘要:

为了在恶劣的水声信道中确保数据的可靠传输,采用性能优异的Turbo码,以6711DSP为核心处理单元构建译码系统。系统采用戈泽尔算法进行跳频的软解调,迭代的软输出维特比译码算法(SOVA)进行译码。系统经过实验室水池的试验,证实能保证译码的实时性及其在恶劣信道中数据传输的正确性,具有相当优异的性能。

关键词: Turbo码迭代译码频谱分析水声信道

DOI：

分类号:

基金项目:福建省自然科学基金资助项目(A0410003)

Design and implementation of Turbo decoding system in underwater acoustic communication

Abstract:

In this issue, an excellent performed Turbo code was introduced into underwater acoustic(UWA) channel. A Turbo decoder based on 6711DSP was constructed, employing Goertzel arithmetic to realize soft Frequency-hopped demodulation, iterative soft-output Viterbi arithmetic(SOVA) arithmetic as the core decoding arithmetic. The decoder system was tested under the real UWA channel.

Key words: Turbo code interative decoding spectral analysis underwater acoustic(UWA)

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