比特同步

一种自适应最大似然GPS比特同步方法

Self-Adaptive Maximum Likelihood Method for GPS Bit Synchronization

弱信号下的比特同步在GPS的接收机设计中是一个重点也是一个难点。

Under weak signal environments , bit synchronization is very important and difficult in GPS receiver design .

基于一种新的比特同步算法的数字式Modem

Digital Modem Based on New Algorithm of Bit Synchronization

介绍一种PON上行信号元快速比特同步结构及其实现。

A fast bit synchronization technique PON for upstream cell is presented .

介绍了一种用于数字Modem设计的比特同步提取算法以及基于该算法的采用不同调制方式的数字Modem设计及其硬件实现。

A new algorithm to extract bit synchronization in designing a digital modem is introduced , and its hardware realization for different kinds of modulations based on this algorithm is presented .

通过在发射端对非归零（NRZ）的光信号进行比特同步相位预调制，使非归零码在传输过程中得到波形重整，演变为归零（RZ）的波形，从而提高眼图开启度。

The bit-synchronous phase pre-modulation imposed on non-return-to-zero ( NRZ ) signals at the transmitter can reshape the NRZ pulse to return-to-zero ( RZ ) waveform and hence improve the eye opening .

算法采用数字频谱分析的方法，在解调之前实现比特同步提取，从而为解调方式的选择提供了很大的灵活性。

Methods of digital spectral analysis are adopted in this algorithm .

在微蜂窝码分多址小区的上行链路实现比特同步的设想

The bit - synchronous communication on the up-link of micro - cell CDMA Systems

TDM/TDMA比特同步系统研究

Research on TDM / TDMA bit-synchronization system

分相码比特同步器

Bit Synchronizer for Split Phase Coded Data

与传统方式相比，提高了系统的检测速度和可靠性，有效地减小了虚检和误检率，比特同步精度小于F/16，实现了同步系统的跟踪调整。

Compared with traditional method , ours enhanced the speed and improved the reliability . The probability of false and failure to detection were efficiently reduced .

介绍了三种比特同步的方法并比较了它们的性能，相位差分法适用于大频偏条件下的比特同步，似然估计法适用于弱信号环境，但是其对频偏比较敏感。

We introduced three methods of bit synchronization . The Phase difference method was suitable for use with large frequency offset . The likelihood method was suitable for use in weak signal environment , but sensitive to frequency offset .

采用自动门限控制技术实现突发式光信号的接收，并采用延迟锁相环实现“首比特”的相位同步完成数据和时钟的恢复。

Especially , the technology of burst mode receiver with a self_adaptive threshold setting circuit which is very important for receiving burst mode signal , is described in detail .