DIGITAL TRANSMISSION SYSTEM

摘要

PURPOSE:To transmit more data using a transmission line of given S/N, by supplying appearance probability of a signal in a fixed format. CONSTITUTION:To transmit one signal i among a finite number of expected signals to each modulation element, probability Pi that signal i appears on transmission line 4 is coded in proportion to formulaI before being transmitted. In this way, the appearance probability of the k-number signals is selected to maximize the number of transmission bits when mean transmission power is made constant.