Abstract
This paper introduces a distortionless Peak-to-Average Power Ratio (PAPR) reduction scheme suitable for Orthogonal Frequency Division Multiplexing (OFDM), which imposes low additional complexity to the overall system. In particular, the Partial Transmit Sequence (PTS) approach is extended to take into account the effects of the pulse-shaping (PS) filter. The new technique decreases PAPR by 2.9 dB in comparison to normal OFDM, and almost 1.4 dB in comparison to PTS. The proposed technique requires the same computational load with PTS. Furthermore, and in the case that 0.5 dB increase of PAPR over PTS can be tolerated, i.e., 1 dB decrease with respect to normal OFDM, the proposed method requires the computation of 2 IDFTs and 16 iterations instead of 4 IDFTs and 256 iterations required by PTS.
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