This paper mainly introduces the TMS320C54xx DSP software implementation method of frame synchronization and bit synchronization in the up logging signal demodulation course.
介绍了TMS320C54xxDSP对测井仪器井下上传信号解调过程中帧同步和位同步的软件实现方法,重点对比介绍了位同步的两种方法,同时简要介绍了系统功能的硬件实现。
In order to transfer information more quickly and effectively,this paper presents a bit synchronization algorithm based on discrete Fourier transform(DFT).
为了更加快速有效地传输信息,研究了1种基于离散傅里叶变换(DFT)的位同步算法,考虑到调制码元波形具有稳定区和过渡区,该算法只对稳定区内的信号采样值按照载波周期做DFT运算提取幅值,通过检测幅值极小值来实现位同步。
This paper researches the fast bit synchronization in high speed frequency-hop communication system combined with SDR,puts forward a method using lead and lag channel technique of implementing fast bit synchronization in high speed frequency-hop communication system,and introduces the principle and realization of it.
结合软件无线电思想,对高速跳频通信系统中快速位同步技术做了深入研究,提出了一种使用超前、滞后支路法实现高速跳频通信系统快速位同步的方法,阐述了该方法的原理,并且给出了在由DDS、ADC、FPGA和DSP构成的中频发射、接收电路板上的实现结果,验证了该方法的正确性。
Iterative phase synchronization algorithm based on modified Costas loop for LDPC coded systems;
改进科斯塔斯环的LDPC码相位同步算法
The design of a phase synchronization system of bistatic radars;
双基地雷达相位同步系统设计
The Research of Microwave Remote Phase Synchronization and Distance Measurement System;
微波远程相位同步及测距系统研究
Implementation of Digital phase-locked Bit Synchronous extract based on VHDL;
数字锁相位同步提取的VHDL实现
Introduces the function of a communication system simulation tool-SystemView, gives an example of bit synchronous circuit design, to illustrate the application of the simulation tool-SystemView.
介绍了通信系统仿真工具SystemView的主要功能,通过给出位同步电路的设计实例,对SystemView仿真工具的实际应用进行了阐述。
This paper analyzes the realization,uni-polar and bi-polar conversion,bit synchronous in detail.
详细分析了编解码的实现过程、单双极性变换及位同步,最后给出实验结果并分析了编解码时延。
A symbol synchronization method for digital communication is proposed, and it is a indirectly inserted pilot frequency based on pulse width modulation (PWM).
提出了一种用于数字通信的位同步方法,它是基于脉宽调制技术的间接插入导频法。
This paper proposes the theory of Gardner symbol synchronization algorithm in the π/4-DQPSK modulation and demodulation,and applies the Gardner symbol synchronization algorithm to implement the demodulation,which only need two sampling points in a symbol.
本文详细介绍了π/4-DQPSK调制解调过程中Gardner位同步定时算法的原理。
A multi-chaotic digital secure communication scheme based on discrete bit-synchronization is proposed.
采用位同步脉冲同步法设计了一种多重加密的数字混沌保密通信系统。
It r esolves the problem of recovering bit-synchronization signal from continuous ze ros or ones, and ensures the stability of bit- synchronization.
文章提出了一种简易位同步器的设计,其特点是解决了长0和长1码元的位同步信号提取问题,并保证了位同步信号的稳定性。