Orthogonal frequency division multiplexing (OFDM) is a multiple carrier modulation scheme that makes use of orthogonal subcarriers to enhance the performance of system. The signal is transmitted in parallel form across the carrier in OFDM system. Multiple sub-carriers that are closely spaced with respect to each other are utilized that leads to efficient use of spectrum and provide more resilience to interference in this scheme. However, an OFDM signal possess noise like variations in the amplitude of signal commonly known as Peak to average power ratio (PAPR) that is the major shortcoming of this technique. Various schemes are used to suppress PAPR like clipping, companding and SLM. In this paper, an algorithm is proposed and compared with already accessible PAPR suppression methods. The proposed algorithm utilize traditional partial transmit sequence and concept of interleaving subsequent to separating the symbols in sub-block for OFDM. Investigations revealed that the proposed algorithm outperformed the standard PAPR reduction methods by reducing the PAPR approximately by 2 dB with respect to CCDF.

正交频分复用（OFDM）是一种利用正交子载波来增强系统性能的多载波调制方案。信号在OFDM系统中跨载波并行传输。利用相对于彼此紧密间隔的多个子载波，这导致频谱的有效利用并且在该方案中提供了对干扰的更大弹性。但是，OFDM信号具有噪声，例如信号幅度的变化，通常称为峰均功率比（PAPR），这是该技术的主要缺点。各种方案都被用来抑制PAPR，例如削波，压扩和SLM。本文提出了一种算法，并将其与已经可以使用的PAPR抑制方法进行了比较。所提出的算法利用传统的部分发射序列和交织的概念，然后在OFDM的子块中分离符号。研究表明，相对于CCDF，所提出的算法通过将PAPR降低约2 dB，胜过了标准的PAPR降低方法。