The Research Of Reducing Peak-to-Average Power Ratio In OFDM System

This text mainly carry on the analytical summary towards lowering the method that the value average power of the system of OFDM compare(PAPR), and on this foundation to carry an interference to measure to code the method and presses to expand the method irom the orientation dynamic state two kinds of new method of theories really anal>ze to imitate with calculator .Analyzed the OFDM basic principle first, the analysis that is the foundation knowledge as PAPR of behind provides the theories foundation.Aim at the PAPR development present condition the next in order, is divided into existing several kinds method that lowers the PAPR two major type, namely the signal code method and signal mutation method.Distinguished also to carried on the more detailed and analytical summary to them from this both side, analyze the merit and shortcoming of each method, thus give PAPR comparison the research provided the beneficial terrace, the research development that also is later points out the direction.This text carries an interference to measure to code the method to adoption to lowered the OFDM method of PAPR to carry on the research analysis, and give the theories analyzes to imitate with calculator true result, this kind of method has smaller request to the receiver of the system and the structure complexity of the blast-off machine, at the same time because of having the good mistake code function, is a kind of more practical method.The thesis return to finally press to expand the method from the orientation dynamic state, imitate to really as a result express that this kind of method overcame the shortage of the past, in having no obvious increment or lowering the foundation of the system structure complexity, lowered the OFDM PAPR, raise the mistake code function of the system, also for other pressed to expand the method to provide the theories according to.