Design and Development of Novel Non-linear DLL based CDMA System

The trend throughout the world including India clearly indicates the predominance of digital approach in communication system. The message signal, e.g. speech, moving pictures, etc. many be efficiently converted into digital form by PCM/ADM and digital techniques for source encoding, bandwidth compression, error detection and correction, message security and data formatting may efficiently used. The first digital communication system using PCM was developed by Oliver et al in 1948 .