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Timing and carrier synchronization algorithm of MQAM signal

机译：MQAM信号的定时与载波同步算法

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摘要

This paper is focused on the synchronization algorithm of the blind demodulation in the case of unknown any prior information, which is aiming to meet the requirement of blind demodulation of MQAM signal when non-cooperative communication. After the signal passes through the Gaussian channel, in order to correct the time offset , the Gardner timing loop based on the FIR pre-filtering of self-noise reduction is studied and the carrier synchronization loop based on PD algorithm and DD algorithm switching principle is aiming to correct the phase offset. Through the simulation signal respectively on the timing and carrier loop simulation, the results show that the design Loop synchronization effect is good, in the project has a greater application value.
机译：本文的重点是在未知的任何先前信息的情况下盲解调的同步算法，其旨在满足非协作通信时盲目解调MQAM信号的要求。 在信号通过高斯通道之后，为了纠正时间偏移，研究了基于FIR的加工程序定时循环，基于PD算法和DD算法切换原理的载波同步环路是 旨在纠正相位偏移量。 通过分别在定时和载波循环仿真上的仿真信号，结果表明设计循环同步效果好，在项目中具有更大的应用值。

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