A public key cryptosystem allows two or more parties to securely communicate
over an insecure channel without establishing a physically secure channel for key
exchange. The RSA cryptosystem is the most popular public key cryptosystem ever
invented. It is based on the difficulty of factoring large composite numbers. Once the...
Oversampling and noise-shaping methods for digital-to-analog (D/A) conversion have
been widely accepted as methods of choice in high performance data conversion
applications. In this thesis, the fundamentals of D/A conversion and oversampling D/A
conversion were discussed, along with the detailed analysis and comparison of the reported
state-of-the-art oversampling D/A converters....
Delta-sigma modulators are currently a very popular technique for making high-resolution
analog-to-digital and digital-to-analog converters. These oversampled data
converters have several advantages over conventional Nyquist-rate converters, including
an insensitivity to many analog component imperfections, a simpler antialiasing filter and
reduced accuracy requirements in the sample and hold. Though the initial...