Survey on LZW-Dictionary based Data compression Technique

Abstract

Data compression techniques are used to reduce size of original data. Now a day’s data transmission storage and
processing are the integral parts of information systems and used in day to day life. Data transmission of large size
of data over a network and also storage of large amount of data is critical task. Larger memory and increased
bandwidth utilization is required by the system to store and transmit large amount of data over network. Due to this
reason it increases the hardware and transmission cost. For this one solution can be that to reduce size of data
before storage or transmission without affecting the information content of the data. To reduce size of data without
affecting original data there are different data compression encoding techniques are available. In this paper, we
survey on existing work which is used dictionary based data compression techniques and also give general
introduction of different dictionary based data compression techniques.