ABSTRACT

In this research, an improved PTS algorithm is projected for diminishing peak to average power ratio (PAPR) of well accepted and effective orthogonal frequency division multiplexing (OFDM) system. OFDM is also considered as trustworthy method for several wireless communication applications and obtained a lot of research interests but unfortunately, one of the most important concern is very high PAPR in OFDM signals, which deteriorates system performance thus this is the most important drawback. To address this problem, a novel partial transmit sequence (PTS) algorithm is projected based upon centering phase sequences matrix (PTS-CPSM-Algo). These phase sequences are used for optimization of data so that minimum PAPR can be obtained. This algorithm obtains significant reduction in PAPR which leads to the enhancement in performance of OFDM system. From the developed analysis and simulation results, supremacy can be clearly seen for proposed PTS-CPSM-Algo over already existing OFDM system, selected mapping (SLM) and partial transmit sequence (PTS).

摘要

在这项研究中，提出了一种改进的 PTS 算法，用于降低广为接受且有效的正交频分复用 (OFDM) 系统的峰均功率比 (PAPR)。OFDM也被认为是几种无线通信应用的可靠方法，并获得了很多研究兴趣，但不幸的是，最重要的问题之一是OFDM信号中非常高的PAPR，这会降低系统性能，因此这是最重要的缺点。为了解决这个问题，提出了一种基于中心相位序列矩阵（PTS-CPSM-Algo）的新型部分发射序列（PTS）算法。这些相位序列用于优化数据，以便获得最小的 PAPR。该算法显着降低了 PAPR，从而提高了 OFDM 系统的性能。