摘要
首先介绍了相位噪声的基本概念,给出了信号源相位噪声与误码率的关系。以实际工程中使用的本振信号源为例,通过中频闭环法进行相噪影响测试分析,给出了测试方法、步骤及测试数据曲线,结果表明,在同等相位噪声下,码速率越高,相位噪声对解调误码率恶化程度越大。分析结果对接收系统的工程设计具有一定的指导意义。
This paper introduces the basic concept of phase noise and indicates the relationship between the phase noise and the bit error rate. Taking the use of vibration signal source in practical engineering as example, the test methods, steps, and test-data-curve are derived through the analysis of phase noise impact test with intermediate-frequency closed-loop method. The result shows that under the same phase noise, the phase noise of BER deterioration degree becomes higher as the code rate increases. This analysis can serve as the guidance to the engineering design of the receiving system.
出处
《山西电子技术》
2015年第5期78-79,共2页
Shanxi Electronic Technology
