Abstract
In orthogonal frequency division multiplexing (OFDM) systems, high peak-to-average power ratio (PAPR) of OFDM signals is one of the most important problems. As a solution to the PAPR problem in OFDM systems, the partial transmit sequence (PTS) is a fairly suitable scheme due to its PAPR reduction performance and distortionless characteristic. However, high computational complexity is a serious problem in the PTS scheme. In this paper, in an effort to reduce its computational complexity, new PTS schemes are proposed using dominant time-domain samples of OFDM signals. Although the proposed PTS schemes use dominant time-domain samples in a manner similar to several existing low-complexity PTS schemes, we propose more efficient selection methods for dominant time-domain samples. The proposed PTS schemes lower the computational complexity compared to the conventional PTS schemes while achieving the optimal PAPR reduction performance.
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