Summary
Smart Info-Media Systems in Asia
2019
Session Number:RS2
Session:
Number:RS2-1
Dither Signal Design for PAPR Reduction in OFDM-IM
Shinya Watanabe, Teruyuki Miyajima, Yoshiki Sugitani,
pp.98-103
Publication Date:2019/9/4
Online ISSN:2188-5079
Summary:
This paper proposes a peak-to-average power ratio (PAPR) reduction method using a time-domain dither signal for orthogonal frequency division multiplexing with index modulation (OFDM-IM) systems. The dither signal is determined so as not only to reduce PAPR at the transmitter but also to avoid the misdetection of active subcarriers at the receiver. Unlike conventional methods, we make use of the channel knowledge at the transmitter to keep the dither signal components in the DFT output at the receiver sufficiently low. Simulation results show that the proposed method is significantly superior to a conventional method in terms of bit error rate performance while preserving similar PAPR performance.