But OFDM is very sensitive to synchronization error, especially the symbol synchronization error.
但是OFDM对同步误差十分敏感，特别是符号同步误差。
Finally, it corrected the following symbol synchronization according to the correlation peak location.
最后根据相关峰位置对后续码元进行同步修正。
The design of the resampling filter is a key technique for symbol synchronization in all-digital receiver.
重采样滤波器设计是全数字接收机中实现符号同步的关键技术之一。
However it is particularly sensitive to synchronization errors, especially errors in symbol synchronization.
但是OFDM对同步误差特别是符号同步误差十分敏感。
A novel symbol synchronization and carrier frequency offset estimation method is presented for 39-tone OFDM systems.
针对短波39音OFDM系统，提出了一种新型的符号同步和载波频偏估计方法。
The system model is introduced and the probability of error in receiver as a function of symbol synchronization error is deduced.
给出了该系统模型，推导了PAM通信系统符号同步误差对收端误码率的影响。
As one of the most crucial technique of OFDM, synchronization technique includes carrier frequency synchronization and symbol synchronization.
同步技术是OFDM最关键的技术之一，它包括载波频率同步和符号同步。
Therefore, this thesis focuses on investigating the frame (time-slot) synchronization and symbol synchronization techniques based on CMMB system.
本文将对基于CMMB系统的帧(时隙)同步和符号同步技术展开研究。
In this paper, the FIR variable fractional delay filter is designed and used to solve the problem of symbol synchronization of all digital receiver.
文中设计的FIR可变分数延迟滤波器用于解决全数字接收机的时钟同步问题。
And then, the algorithm based on the interpolation of MPSK symbol synchronization, as well as the hardware implementation of the modules is introduced.
接着，介绍了基于内插的MPSK信号符号同步的算法，以及各模块的硬件实现。
The main contents of this dissertation are as follows: Chapter 2 investigates the symbol synchronization acquisition-aiding method with larger symbol rate offset.
全文的主要内容如下：第二章研究了大符号率偏差情况下的辅助符号同步捕获方法。
A novel symbol synchronization is presented with frame synchronization of PPM. On the basis of analyzing frame sync code pattern and length, a PPM frame scheme is designed.
在分析帧同步码型和长度要求的基础上，设计了一种PP M帧结构，提出了利用帧同步来实现PPM符号同步的方法。
An improved algorithm for symbol synchronization and symbol decision are proposed. Their performance at different level of SNR and frequency offset are discussed by simulations.
本文提出了一种改进的码元同步算法和改进的码元判决算法，通过仿真分析了它们的抗噪声和抗频偏性能。
Due to the obvious impact of frequency offset on PN sequences, based on the FH sequence, a symbol synchronization scheme with a conjugate symmetric training sequence is proposed.
针对频偏对PN序列相关性影响比较明显的问题，提出了一种利用FH序列构造的具有共轭对称性质的训练序列进行符号同步的方案。
Secondly, a DSTFT(Discrete Short Time Fourier Transform )-based demodulation method for the 2FSK signal is studied and algorithms for symbol synchronization and symbol decision are analysed.
重点研究了基于离散短时傅里叶变换解调2FSK信号的方法，分析了几种码元同步算法和码元判决算法。
At last, this paper analyses the delay correlation properties of 2fsk signal, and proposes a new algorithm for symbol synchronization, which shows better performance when frequency offset exists.
最后，从抗频偏的角度出发，通过分析2fsk信号的延迟相关特性，给出了一种码元同步算法，具有良好的抗频偏性能。
At last, this paper analyses the delay correlation properties of 2fsk signal, and proposes a new algorithm for symbol synchronization, which shows better performance when frequency offset exists.
最后，从抗频偏的角度出发，通过分析2fsk信号的延迟相关特性，给出了一种码元同步算法，具有良好的抗频偏性能。
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