Reduction PAPR of OFDM Signals by Combining Grouped DCT Precoding with PTS

• 作者: Shoufa Chen Zhongpeng Wang
• 来源期刊: 信号与信息处理(英文)
• 学科: 工学
• 关键词: Orthogonal Frquency-Division MULTIPLEXING (OFDM) Peak-to-Average Power Ratio (PAPR) Partial Transmit Sequence (PTS) Discrete COSINE Transform (DCT)
• 年，卷（期）: 2014,（4）
• 页码范围: 135-142
• 页数: 8页
• 分类号: TN91

摘要

The high peak-to-average power ratio (PAPR) is one of the serious problems in the application of OFDM technology. In this paper, an improved partial transmit sequence (PTS) scheme based on combining the grouped discrete cosine transform (DCT) with PTS technique is proposed. In the proposed scheme, the adjacent partitioned data are firstly transformed by a DCT into new modified data. After that the proposed scheme utilizes the conventional PTS technique to further reduce the PAPR of the OFDM signal. The performance of the PAPR is evaluated using a computer simulation. The simulation results indicate that the proposed scheme may improve the PAPR performance compared with the conventional PTS scheme, the grouped DCT scheme, and original OFDM respectively.