Performance enhancement of DSSS using rabbit Stream cipher

Over the last 50 years, a class of modulation techniques usually called “Spread Spectrum,” has been developed. This group of modulation techniques is characterized by its wide frequency spectra. The modulated output signals occupy a much greater bandwidth than the signal´s baseband information bandwidth. To qualify as a spread spectrum signal, two criteria should be met. The transmitted signal bandwidth is much greater than the information bandwidth. Some function other than the information being transmitted is employed to determine the resultant transmitted bandwidth. The existing method is prone to Near-Far effect. This paper presents the performance analysis of DSSS and it is improved by the proposed method using rabbit Stream cipher.