Performance of compression algorithms for radio signal data
Zhixin Wang, Yue Xin-Dong, Haifeng Li, Feng Tao, Zheng Lu, Liu Jun-Wei · 2021
In the face of the shortage of radio spectrum resources, the contradiction between supply and demand and other issues, data compression technology can ensure data integrity while saving storage space, effectively improving the utilization of spectrum resources. This article first makes lossless Huffman coding, LZ77, LZ78, and LZW algorithms. The compression technology is briefly introduced, and the application of various algorithms and the corresponding advantages and disadvantages are analyzed with examples. Secondly, for the radio signal data of the radio monitoring station in Gansu Province, the performance of these commonly used lossless compression algorithms is compared. Finally, the experimental test result data proves that when the compressed file is large, the LZ series algorithm has a better compression effect than the Huffman algorithm. In LZ series, LZW algorithm has the best compression effect, LZ77 algorithm has the worst compression effect, and the compression effect of LZ78 is between them. When the compressed file is small, because the data in the compressed file is less, the compression effect of several algorithms is not obvious.