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正交频分复用(OFDM)技术作为一种高速信息传输技术,具有频谱利用率高、抗频率选择性衰落和码间干扰能力强等优势,但由于OFDM信号是通过多载波调制后的合成信号,所以OFDM信号存在较高的峰均比,这会给传输系统带来许多不利因素,限制了OFDM技术的应用。文章针对OFDM系统中存在的高峰均比提出了一些相关的抑制技术,提高了系统的可靠性和有效性。在实际应用中,可根据要求和需要选择适合的方法。
As a high-speed information transmission technology, Orthogonal Frequency Division Multiplexing (OFDM) technology has the advantages of high spectrum efficiency, anti-frequency selective fading and inter-symbol interference ability. However, the OFDM signal is synthesized through multi-carrier modulation Signal, OFDM signals have higher peak-to-average ratio, which brings many disadvantages to the transmission system and limits the application of OFDM technology. In this paper, some related suppression techniques are proposed for the peak-to-average ratio in OFDM systems, which improves the reliability and effectiveness of the system. In practice, according to the requirements and needs to choose the appropriate method.