广义频分复用系统及峰均功率比研究

摘要

In traditional CP-OFDM technology exist has two drawbacks, i.e., the adding of cyclic prefix would result in low spectrum efficiency and it is sensitive to the Doppler frequency shift. This paper principally discusses the issue of pulse shaping filter for GFDM (generalized frequency division multiplex) system. With the suitable arrangement, GFDM system could match the channel propagation against the inter-symbol interference and inter-carrier interference. Finally, PAPR (peak-to-average-power-ratio) for GFDM system is exoounded, and the bit error ratio performance in presence of HPA (high-power amplifier) also analyzed.%　　利用循环前缀的正交频分复用技术仍然存在循环前缀导致的频谱利用率较低，对移动台高速运动引入的多普勒频移敏感等问题。该文主要讨论基于波形设计的广义频分复用系统，即通过设计合适的发送波形，能够有效地抑制无线通信信道中多径干扰和多普勒频移等问题。本文还讨论了基于波形设计的广义频分复用系统的峰值平均功率比问题，并且给出了广义频分复用系统在非线性高功率放大器模型下的性能。