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WCDMA: Aiding the Evolution to UMTS

Wed, 09/11/2002 - 8:56am

A technical approach to the theoretical fundamentals and concepts

Editor's Note: Due to the large amount of equations in this article, a PDF has been made available

By Alejandro Cadenas, Motorola Espana

     Code Division Multiple Access techniques are a form of the so-called spread spectrum. This is a kind of digital communications that have been used at a first stage for military purposes during many years, mainly during World War II. The main principle of these techniques is the use of the noise-like carriers, that present a bandwidth that is much wider than the one required for a simple point-to-point connection at the same data rate. This way they look like noise...

To read the remainder of the article, please download the PDF.


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