标题： 通过PAPR降低提高OFDM系统的性能 显示英文标题

标题： Performance improvement in OFDM system by PAPR reduction

摘要： 正交频分复用（OFDM）是高速通信系统中一种高效的数据传输方法。 然而，OFDM系统的的主要缺点是传输信号的高峰均功率比（PAPR）。 OFDM包含大量独立的子载波，因此这种信号的幅度可能会有较高的峰值。 编码、相位旋转和截断是为了解决这个问题而提出的许多PAPR降低方案中的几种。 这里使用了两种不同的PAPR降低方法，例如部分发送序列（PTS）和选择性映射（SLM）来降低PAPR。 使用这些技术已经实现了显著的PAPR降低。 然后比较了这两种方法的性能。 显示英文摘要

摘要： Orthogonal Frequency Division Multiplexing (OFDM) is an efficient method of data transmission for high speed communication systems. However, the main drawback of OFDM system is the high Peak to Average Power Ratio (PAPR) of the transmitted signals. OFDM consist of large number of independent subcarriers, as a result of which the amplitude of such a signal can have high peak values. Coding, phase rotation and clipping are among many PAPR reduction schemes that have been proposed to overcome this problem. Here two different PAPR reduction methods e.g. partial transmit sequence (PTS) and selective mapping (SLM) are used to reduce PAPR. Significant reduction in PAPR has been achieved using these techniques. The performances of the two methods are then compared.