Some improvements to logistic map for chaotic signal generator

Chaotic sequences are widely used in spread spectrum communication, image or video processing and security communication for its properties, high sensitivity to initial value, pseudorandom, and etc. Generally, chaotic sequences are generated based on some chaotic map, such as logistic map. While, logistic map has a limited range parameter and symmetry distribution, which is not convenient and secure sin practical use. So, in this paper, some improvements are made to the logistic map, and its parameter range is greatly extended as well as its distribution is converted to uniform distribution, which is very useful for chaotic signal generator.