摘要
简述了降低正交频分复用系统峰均功率比的研究进展 ,给出了基于分组编码调制降低峰均功率比的方法 ,提出了子载波数较大系统的搭建方法 ,分析了实现原理并进行了仿真研究 ,结果表明该方法不仅能有效降低正交频分复用系统的峰均功率比 。
The problem of the practical orthogonal frequency division multiplexing (OFDM) system is that the peak to the average power raito (PAPR) is very high. This paper briefly describes the progress researches on reducing the PAPR. The method to reduce the PAPR of the OFDM system based on block coding modulation (BCM) is presented and the construction of large sub carrier number systems is proposed. We have analyzed the implementation principle and carried out computer simulation. The results indicate that the BCM method not only can effectively lower the PAPR in the OFDM system, but also carry out forward error correction (FEC).
出处
《应用科学学报》
CAS
CSCD
2002年第4期399-403,共5页
Journal of Applied Sciences
基金
国家自然科学基金资助项目 (60 0 72 0 16)
教育部科学技术研究重点项目 (99176)
