Electronics Projects:Spread Spectrum

Implementation of Spread Spectrum Simulation:

In telecommunication and radio communication, spread-spectrum techniques are methods by which a signal (e.g. an electrical, electromagnetic, or acoustic signal) generated with a particular bandwidth is deliberately spread in the frequency domain, resulting in a signal with a wider bandwidth. These techniques are used for a variety of reasons, including the establishment of secure communications, increasing resistance to natural interference, noise and jamming, to prevent detection, and to limit power flux density (e.g. in satellite downlinks). Spread-spectrum telecommunications is a signal structuring technique that employs direct sequence, frequency hopping, or a hybrid of these, which can be used for multiple access and/or multiple functions.

This project provides an interactive application that allows the user to select an input audio signal (a pre-recorded .wav file or a microphone) and "watch" as it is processed, transmitted, and received in a direct sequence spread spectrum simulation. It is intended to give the user a basic overview of direct sequence spread spectrum by describing the individual components of a general system.