An Introduction to Spread Spectrum Systems

• This report is a tutorial introduction to spread spectrum communicationsystems, and it should be accessible for a reader who has basic knowledge ofdigital modulation and channel coding. The authors have chosen to presentthe more advanced topics in the report from a signal space and channel codingpoint of view. While other approaches are certainly possible, the authorsfeel that the chosen approach is the most beneficial for the communicationsengineer. Since the original applications for spread spectrum systems weremilitary, we will introduce spread spectrum links as a means of overcomingintentional jamming. The reader who dislikes military applications may becomforted by the fact that the problem of communicating in the presenceof jamming is very much akin to the problem of communicating over fadingchannels. Hence, by finding out how to defeat jamming by spread spectrumwill also reveal how to overcome fading. Today, spread spectrum linksare also used in many civilian systems to overcome nonintentional jamming(or interference), and the report is concluded with an overview of currentcommercial spread spectrum systems.The authors welcome comments and corrections to the material. Pleasesend these to Erik Ström at erik.strom@s2.chalmers.se.

Subject headings

TEKNIK OCH TEKNOLOGIER  -- Elektroteknik och elektronik -- Annan elektroteknik och elektronik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Electrical Engineering, Electronic Engineering, Information Engineering -- Other Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)

Publication and Content Type

rap (subject category)

vet (subject category)