信道编码在无人机数据链中的应用研究

发布时间：2018-06-16 14:43

本文选题：无人机 + 数据链　；参考：《重庆邮电大学学报(自然科学版)》2014年06期

【摘要】：针对无人机(unmanned aerial vehicle,UAV)平台数据链机载端机所要求的信道编码算法简单、运算速度快、纠错能力强和实时性高等特点,研究分析了适用于无人机数据链系统的卷积码、Turbo码、LDPC(low density parity check code)码等信道编码的编译码特点,采用基于信道编码的OFDM(orthogonal frequency division multiplexing)传输方案设计了高速无人机数据链系统,并针对不同的编码方案分别进行了在Rayleigh衰落和Rician衰落信道下的性能仿真分析,仿真结果表明,在高速无人机信道下,不论在短码和长码情况下,综合考虑编译码实现复杂度和性能2个方面,LDPC码均表现出了比卷积码和Turbo码较优异的性能,可作为无人机数据链系统中较好的信道编码方案。LDPC码相比卷积码与Turbo码具有更好的误码率性能,是较好的解决方案。
[Abstract]:Aiming at the characteristics of channel coding algorithm, high speed, strong error-correcting ability and real time ability, which are required by the data link of unmanned aerial vehicle (UAV) platform, the channel coding algorithm is simple, the computation speed is high, the error correction ability is strong and the real-time performance is high. This paper studies and analyzes the encoding and decoding characteristics of convolutional code turbo code and LDPC low density parity check code) code suitable for UAV data link system, and designs a high speed UAV data link system based on channel coding OFDM / orthogonal frequency division multiplexing) transmission scheme. The simulation results of different coding schemes in Rayleigh fading and Rician fading channels show that, in high speed UAV channels, whether in short code or long code, the simulation results show that, Considering the complexity and performance of coding and decoding, LDPC codes show better performance than convolutional codes and Turbo codes. LDPC code has better BER performance than convolutional code and Turbo code. LDPC code is a better solution to UAV data link system.
【作者单位】：重庆通信学院;
【基金】：重庆市自然科学基金(cstc2012jj A40033)~~
【分类号】：TN911.22;TN919.2

【参考文献】