| PCM/DQPSK遥测信号解调时位同步的软件实现研究 |
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| 引用本文： | 刘东华,冯春燕. PCM/DQPSK遥测信号解调时位同步的软件实现研究[J]. 遥测遥控, 2004, 0(3) |
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| 作者姓名： | 刘东华 冯春燕 |
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| 作者单位： | 北京怀柔3380信箱72号北京101416(刘东华)，北京怀柔3380信箱72号北京101416(冯春燕) |
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| 摘 要： | 根据 PCM/ DQPSK信号的特点 ,提出一种新的实现位同步的算法。通过使用最小均方估计算法 (LMS) ,计算滑动窗内数据估计误差绝对值累加和的方法 ,搜索相位跳变点 ,实现位同步。同时给出一种简捷修正相位跳变点的方法 ,在每次解调前修正相位跳变点的位置 ,保证解调结果的正确性。
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| 关 键 词： | PCM/DQPSK 最小均方算法 位同步 |
Study on the Software Realization of Bit Synchronization of PCM/DQPSK Telemetry Signal''''s |
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| Liu Donghua Feng Chunyan. Study on the Software Realization of Bit Synchronization of PCM/DQPSK Telemetry Signal''''s[J]. Telemetry & Telecontrol, 2004, 0(3) |
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| Authors: | Liu Donghua Feng Chunyan |
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| Affiliation: | Liu Donghua Feng Chunyan |
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| Abstract: | According to the character of DQPSK signal,this pa pe r proposes a new algorithm to realize bit synchronization.By use of the least me an square(LMS) algorithm,the accumulative sum of absolute error value of data es timate in the glide window is calculated,and the phase skip position is searched out,so the bit synchronization is realized.A simple algorithm to modify the pha se skipping position before demodulation is also presented. |
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| Keywords: | PCM/DQPSK LMS Bit synchronization |
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