Mobile data traffic is expected to triple between 2018 and 2021 [1]. To meet past and future growth targets in an increasingly limited electromagnetic spectrum, wireless communications systems have evolved at a staggering rate. Current mobile phone standards like 3rd Generation Partnership Project LTE and Wi-Fi exploit orthogonal frequencydivision multiplexing (OFDM) as a means of achieving the required wireless data rates. OFDM is also a potential candidate for future 5G services. Although highly spectrally efficient, OFDM suffers from a large peak-to-average power ratio (PAPR), where the transmit signal peak envelope power can be 12 dB greater than the average value.

中文翻译：

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两全其美：动态负载调制功率放大器

预计移动数据流量在 2018 年至 2021 年间将增加两倍 [1]。为了在日益有限的电磁频谱中实现过去和未来的增长目标，无线通信系统以惊人的速度发展。当前的移动电话标准（如第三代合作伙伴计划 LTE 和 Wi-Fi）利用正交频分复用 (OFDM) 作为实现所需无线数据速率的手段。OFDM 也是未来 5G 服务的潜在候选。尽管频谱效率很高，但 OFDM 存在较大的峰均功率比 (PAPR)，其中发射信号的峰值包络功率可能比平均值大 12 dB。