摘要
Abstract
Aimed at improving the performance of the fourth-generation OFDM mobile communication system,and reducing the PAPR of OFDM system effectively,this paper describes a simulation and analysis of four kinds of PAPR suppression algorithm,consisting of clipping and filtering,selective mapping(SLM),partial transmit sequences(PTS),and active constellation extension(ACE) by using MATLAB.The simulation shows that,as opposed to the three algorithms,such as,clipping and filtering,and SLM,PTS suffering a higher bit error rate,a greater complexity,and larger calculation,active constellation extension algorithm demonstrates advantages,such as a greater decrease in the PAPR of OFDM system,a significant improvement in the system performance,and a lower bit error rate,and smaller computation.It follows that(ACE) boasts a stronger practicability than SLM and PTS algorithm.关键词
正交频分复用/峰均比/动态星座扩展Key words
orthogonal frequency division multiplexing/peak-to-average power ratio/active constellation extension分类
信息技术与安全科学
