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正交频分复用技术的使用,有效的解决了高速率数据传输中,多径信道频率选择性衰落、频谱利用率不高等问题。但是相对于单载波系统,该技术在使用的过程中出现了信号峰值平均功率偏高、对同步偏差极其敏感等问题。为了解决这些问题,本文设计了联合定时同步与频率同步算法,有效的提高了系统的定时同步性能。
The use of Orthogonal Frequency Division Multiplexing (OFDM) technology effectively solves the problem of frequency-selective fading of multipath channels and low spectrum utilization in high-rate data transmission. However, compared with the single-carrier system, the technology has experienced problems such as high average signal peak power, extremely sensitive to synchronization deviation, and the like. In order to solve these problems, this paper designs a joint timing synchronization and frequency synchronization algorithm, effectively improve the system’s timing synchronization performance.