摘要
接收机中频带宽是影响调频(FM)遥测解调误码性能的一个重要因素。根据FM信号的解调原理,对非相干鉴频和多符号检测2种解调方式下,中频带宽对解调误码率性能的影响进行了仿真分析,提出了最优误码性能下中频带宽参数的推荐值为1.2倍码速率,通过硬件实验对仿真分析结果进行了验证。
The intermediate frequency （IF） bandwidth is an important influencing factor on the demodulation performance of FM telemetry receiver. The influence of IF bandwidth is studied for both non-coherent demodulation and multi-symbol detection by means of the simulation analysis. To optimize the bit-error-rate performance of demodulation, the recommended typical parameter of IF bandwidth is put forward,which is almost 1.2 times bit-rate. At last,the simulated results are validated by the hardware testing.
出处
《无线电工程》
2013年第6期17-19,共3页
Radio Engineering
关键词
调频
中频带宽
解调
误码率
frequency modulation
intermediate frequency bandwidth
demodulation
bit-error-rate
