基于SIP协议信息的LZW压缩算法的改进

Improvement of LZW Data-Compress Algorithm Based on SIP Messages

为了SIP协议更好地运用于窄带环境,通过扩充初始字典并优化编码,同时改进压缩和解压缩的过程,提出了改进的LZW压缩算法,实现了对SIP协议消息的无损压缩,并利用VC^(++)完成了算法改进后的测试.实验结果表明:改进后的LZW算法的速度和效率得到了大幅提高,且压缩效果更为理想.

For a better application to the narrow belt environment,through enlarging the initial dictionary, optimizing code and improving compression and decompression process,the improved LZW data-compress algorithm is introduced and realizes the no-distortion compression of SIP messages.The test implemented by C^(++), the results indicates that speed and efficiency of the improved data-compress algorithm get largely enhanced,and the compression effect is more effective.