期刊名称:International Journal of Wireless & Mobile Networks
印刷版ISSN:0975-4679
电子版ISSN:0975-3834
出版年度:2013
卷号:5
期号:5
DOI:10.5121/ijwmn.2013.5503
出版社:Academy & Industry Research Collaboration Center (AIRCC)
摘要:An OFDM system is combined with multiple-input multiple-output (MIMO) in order to increase the diversity gain and system capacity over the time variant frequency-selective channels. However, a major drawback of MIMO-OFDM system is that the transmitted signals on different antennas might exhibit high peak-to-average power ratio (PAPR).In this paper, we present a PAPR analysis reduction of space-time-block-coded (STBC) MIMO-OFDM system for 4G wireless networks. Several techniques have been used to reduce the PAPR of the (STBC) MIMOOFDM system: clipping and filtering, partial transmit sequence (PTS) and selected mapping (SLM). Simulation results show that clipping and filtering provides a better PAPR reduction than the others methods and only SLM technique conserve the PAPR reduction in reception part of signal
关键词:MIMO-OFDM; peak-to-average power ratios; space-time coding system (STBC); clipping and filtering; ;SLM; PTS