Secure data content delivery system for multimedia applications utilizing bandwidth efficient modulation

摘要

An apparatus and method for delivering multimedia content for public presentation is disclosed. An exemplary system includes a distribution entity transmitting content data to at least one user system for receiving the transmitted content data and presenting for exhibition and a network operation center for coordinating encryption of the transmitted content data at the distribution entity and decryption of the transmitted content data at the user system. The content data is transmitted using one or more bandwidth efficient modulation (BEM) techniques selected from the group comprising forward error control coding, pulse shaping, adaptive receive equalization, nonlinear predistortion and linear predistortion.