摘要
正交频分复用(OFDM)技术作为移动通信的核心技术之一,被广泛用于各种通信系统,但其具有很高的峰值平均功率比(PAPR),会导致OFDM信号超过放大器的线性放大范围,从而恶化系统性能。文章研究了一种在降低PAPR的部分传输序列(PTS)方法基础之上的低复杂度方法,对PTS方法中候选序列的产生降低了复杂度,同时加入了复杂度较低的压扩方法。仿真结果表明,该方法在降低复杂度的同时也具有比传统PTS更好的降低PAPR的能力。
OFMD has higher peak average power ratio （PAPR）, which will cause the OFDM signal surpass the linear amplification scope of amplifier and deteriorate system performance. In this paper, we propose a new PAPR reduction method based on low complexity PTS for OFDM system. This method simplifies the process of generating candidate se- quences in conventional PTS, while adding the method of low complexity companding transform. Simulation shows that the method we proposed not only has low complexity but also has better perfor- mance in reducing PAPR than that of conventional PTS.
出处
《现代电信科技》
2013年第3期25-28,共4页
Modern Science & Technology of Telecommunications
