是不是基于OFDM的设备更费电？

rt
看一篇文档
As Dr. Liang Wu, EVP of Emerging Technology for PCCW (which has trialed and
deployed wireless broadband in both the UK and in Asia), some of the urrent limitations of wireless broadband exist with the handset, most notably:
OFDM-based architectures are power hungry and require good power
management subsystems and power efficient displays
不太明白为什么，请教，3x

1、OFDM信号峰均比PAR高,因此需要大功率功放
2、采用OFDM技术的多为宽带系统，设备收发带宽提高了（若干MHz VS 十~百kHz），功耗肯定大了