纠错编码技术在无线模块中的应用

Application of Error Corrected Encoding Technology in Wireless Module

为了满足自动气象站对数据传输的要求,开发了一种加入纠错编码技术的无线模块。在不增加无线模块体积的前提下,通过软件来实现编解码。具体介绍了汉明码的原理和无线模块传输系统的结构,并重点阐述了无线模块的软硬件设计方案;最后对纠错编码技术应用前后的误码率进行了对比。实验数据表明,纠错编码的加入使误码率符合理论计算值,并有效地提高了无线模块的可靠性。

To meet the requirement on data transmission for automatic meteorological station, the wireless module with error correction code added technology has been developed. The module keeps the same volume, its encoding and decoding are implemented by software. The principle of Hamming code and the structure of transmission system of wireless module are introduced concretely. The design strategies of hardware and software of the module are described emphatically, and the bit error ratios with and without error correction technology application are compared. The experimental data show that the bit error ratio meets the theoretical calculation and the reliability of the wireless module has been effectively enhanced after adding error correction encoding.