论文标题
在瑞利褪色通道上，ofdm-im降低PAPR的抖动信号设计
Dither Signal Design for PAPR Reduction in OFDM-IM over a Rayleigh Fading Channel
论文作者
论文摘要
用索引调制（OFDM-IM）的正交频施加多路复用是一种新颖的方案，其中信息位是通过子载波激活模式（SAP）和活动子载波上的符号传达的。不幸的是，OFDM-IM继承了经典OFDM的高峰值功率比（PAPR）问题。具有高paPR的OFDMIM信号通过高功率放大器（HPA）引起带外的失真和带外辐射。试图通过在闲置子载波中添加抖动信号来减少PAPR，在该信号中，抖动信号可以根据相应的OFDM-IM子块的特征具有各种振幅约束。但是，在雷利褪色通道上的抖动信号的特定振幅约束没有结果。在此字母中，基于成对误差概率（PEP）分析，对抖动信号的特定约束是在瑞利褪色通道上得出的。
Orthogonal frequency division multiplexing with index modulation (OFDM-IM) is a novel scheme where the information bits are conveyed through the subcarrier activation pattern (SAP) and the symbols on the active subcarriers. Unfortunately, OFDM-IM inherits the high peak-to-average power ratio (PAPR) problem from the classical OFDM. The OFDMIM signal with high PAPR induces in-band distortion and out-of-band radiation when it passes through high power amplifier (HPA). There are attempts to reduce PAPR by adding dither signals in the idle subcarriers, where the dither signals can have various amplitude constraints according to the characteristic of the corresponding OFDM-IM subblock. But, there is no result for the specific amplitude constraint for the dither signals over a Rayleigh fading channel. In this letter, based on pairwise error probability (PEP) analysis, a specific constraint for the dither signals is derived over a Rayleigh fading channel.
