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信道编码是数字通信系统中的重要组成部分,它是保证信号可靠传输的一种重要方式,卷积码以其优越的性能被广泛应用在数字通信系统中。结合无人机信道的特性,研究分析了卷积码的性能特征,选定了适合无人机数据链特性的(2,1,2)卷积码,采用硬件描述语言实现了卷积码编译码器的硬件设计。实验结果表明,在纠错能力范围内,该设计方案能够正确纠错并译码,并且具有较高的译码速率,提高了无人机数据链的通信质量和抗干扰性能。
Channel coding is an important part of digital communication system. It is an important way to ensure reliable signal transmission. Convolutional codes are widely used in digital communication systems for their superior performance. Combining characteristics of UAV channels, the performance characteristics of convolutional codes are analyzed and studied. The (2, 1, 2) convolutional codes suitable for UAV data link characteristics are selected, and the implementation of convolutional code compilation Hardware design of the coder. Experimental results show that the proposed scheme can correct error correction and decoding within the range of error correction capability, and has a high decoding rate and improves the communication quality and anti-interference performance of the UAV data link.