Research Article
Parallel Algorithm for Wireless Data Compression and Encryption
Table 1
Features of compression software.
| | Software | Format | Basic algorithms | Maximum data window size | Shortages | | Support | Current |
| | WinZip | Deflat | LZSS & Huffman | 512 KB | 512 KB | Small data window; low compression ratio; weak big data support | | WinRAR | RAR | LZSS & Huffman | 4 MB | 4 MB | Small data window; low compression ratio; weak big data support | | PPMd | PPM | — | — | Good compression ratio for text data only; weak big data support | | Bzip2 | BZ2 | BWT & Huffman | 900 KB (block) | 900 KB | Small BWT block; low compression ratio; weak big data support | | 7-zip | LZMA | LZSS & arithmetic | 4 GB | 1 GB | No multilevel coding for large data window; limited big data support | | ComZip | CZ | LZ77 & arithmetic | 1 TB—unlimited | 0.5 TB | Need larger data window for higher compression ratio |
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