About this document

Spread Spectrum Communications & CDMA by Pooja Gopal is a document available to read on EtoBox.

This document discusses spread spectrum communications and CDMA. It begins by defining spread spectrum techniques, including direct sequence spread spectrum (DS/SS), frequency hopping, time hopping, and hybrid techniques. When each user has its own code, it enables code division multiple access (CDMA). Popular code families for CDMA include Gold codes and Kasami codes, which have low cross-correlations. Modern CDMA systems like IS-95 and WCDMA implement DS/SS as digital data shaping before upconversion.

Author

Pooja Gopal

Language

EN