Implementation of Spread Spectrum Modulation Schemes for Secure Communications

This paper presents a study of wideband spread spectrum modulation schemes with application to secure communications and presents its advantages over narrow band communications. It mainly focuses on two Spread Spectrum techniques - Direct Sequence Spread Spectrum and Frequency Hopped Spread Spectrum. These methods sufficiently reduce the power spectral density of the transmitted signal making it a very secure form of data transmission. Both the techniques were simulated and analyzed using Matlab for the stated application, where real time geographical locations was considered and the obtained results are presented.