摘要
OFDM(正交频分复用)信号的主要缺点之一是存在较高的峰均功率比(PAPR),阻碍了OFDM技术的实际应用。在分析脉冲成形(PS)技术降低PAPR的原理基础上,提出一种改进的Nyqu ist脉冲成形降低PAPR方法。该方法引入子载波波形间的相关性,即采用有效的Nyqu ist成形脉冲集合对各子载波进行脉冲成形。实验结果表明,该方法能增强各子载波间的相关性,显著地降低了PAPR值,而且算法实现简单。
One of primary drawbacks of OFDM signal is with higher PAPR,so that its practical application is blocked.An advanced Nyquist pulse shaping technique is proposed in the article for reducing PAPR based on studying pulse shaping technique.The method is by employing effective Nyquist shaping pulse for shaping different subcarriers,namely introducing the pertinence among different subcarriers being brought.The experiment results show that it can enhance the pertinence among subcarriers,reduce markedly PAPR and actualize simple arithmetic.
出处
《山西电子技术》
2011年第2期57-59,共3页
Shanxi Electronic Technology
