估计并补偿频偏是为了实现载波同步，估计符号率和校正定时误差是为了实现码元同步。
Estimating and compensating carrier frequency offset are to achieve carrier frequency synchronization. Estimating symbol rate and correcting timing error are used to synchronize symbol.
文章介绍了HSP50210的主要性能特点和基本工作原理，重点分析了他的载波同步环及码元同步环。
It emphatically analyses carrier synchronization loop and code synchronization loop of HSP50210, and presents its application in software radio system.
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。
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.
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。
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.
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.
经过限带滤波后的QDPS K信号的码元波形可分为稳定区与过渡区，根据这一特点可以利用DFT方法来实现信号的解调和位同步。
After a bandpass filter, QDPSK signal's symbol can be divided into steady section and transition section, so the demodulation and synchronization for the signal can be realized with DFT.
最后根据相关峰位置对后续码元进行同步修正。
Finally, it corrected the following symbol synchronization according to the correlation peak location.
码元定时恢复(位同步)技术是数字通信中的关键技术。
Symbol timing recovery (Bit Synchronization) is the key technology in the digital communication.
码元定时恢复(位同步)技术是数字通信中的关键技术。
Symbol timing recovery (Bit Synchronization) is the key technology in the digital communication.
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